| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/serde_json-1.0.96/src/read.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>read.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../serde_json/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../serde_json/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| <span id="60">60</span> |
| <span id="61">61</span> |
| <span id="62">62</span> |
| <span id="63">63</span> |
| <span id="64">64</span> |
| <span id="65">65</span> |
| <span id="66">66</span> |
| <span id="67">67</span> |
| <span id="68">68</span> |
| <span id="69">69</span> |
| <span id="70">70</span> |
| <span id="71">71</span> |
| <span id="72">72</span> |
| <span id="73">73</span> |
| <span id="74">74</span> |
| <span id="75">75</span> |
| <span id="76">76</span> |
| <span id="77">77</span> |
| <span id="78">78</span> |
| <span id="79">79</span> |
| <span id="80">80</span> |
| <span id="81">81</span> |
| <span id="82">82</span> |
| <span id="83">83</span> |
| <span id="84">84</span> |
| <span id="85">85</span> |
| <span id="86">86</span> |
| <span id="87">87</span> |
| <span id="88">88</span> |
| <span id="89">89</span> |
| <span id="90">90</span> |
| <span id="91">91</span> |
| <span id="92">92</span> |
| <span id="93">93</span> |
| <span id="94">94</span> |
| <span id="95">95</span> |
| <span id="96">96</span> |
| <span id="97">97</span> |
| <span id="98">98</span> |
| <span id="99">99</span> |
| <span id="100">100</span> |
| <span id="101">101</span> |
| <span id="102">102</span> |
| <span id="103">103</span> |
| <span id="104">104</span> |
| <span id="105">105</span> |
| <span id="106">106</span> |
| <span id="107">107</span> |
| <span id="108">108</span> |
| <span id="109">109</span> |
| <span id="110">110</span> |
| <span id="111">111</span> |
| <span id="112">112</span> |
| <span id="113">113</span> |
| <span id="114">114</span> |
| <span id="115">115</span> |
| <span id="116">116</span> |
| <span id="117">117</span> |
| <span id="118">118</span> |
| <span id="119">119</span> |
| <span id="120">120</span> |
| <span id="121">121</span> |
| <span id="122">122</span> |
| <span id="123">123</span> |
| <span id="124">124</span> |
| <span id="125">125</span> |
| <span id="126">126</span> |
| <span id="127">127</span> |
| <span id="128">128</span> |
| <span id="129">129</span> |
| <span id="130">130</span> |
| <span id="131">131</span> |
| <span id="132">132</span> |
| <span id="133">133</span> |
| <span id="134">134</span> |
| <span id="135">135</span> |
| <span id="136">136</span> |
| <span id="137">137</span> |
| <span id="138">138</span> |
| <span id="139">139</span> |
| <span id="140">140</span> |
| <span id="141">141</span> |
| <span id="142">142</span> |
| <span id="143">143</span> |
| <span id="144">144</span> |
| <span id="145">145</span> |
| <span id="146">146</span> |
| <span id="147">147</span> |
| <span id="148">148</span> |
| <span id="149">149</span> |
| <span id="150">150</span> |
| <span id="151">151</span> |
| <span id="152">152</span> |
| <span id="153">153</span> |
| <span id="154">154</span> |
| <span id="155">155</span> |
| <span id="156">156</span> |
| <span id="157">157</span> |
| <span id="158">158</span> |
| <span id="159">159</span> |
| <span id="160">160</span> |
| <span id="161">161</span> |
| <span id="162">162</span> |
| <span id="163">163</span> |
| <span id="164">164</span> |
| <span id="165">165</span> |
| <span id="166">166</span> |
| <span id="167">167</span> |
| <span id="168">168</span> |
| <span id="169">169</span> |
| <span id="170">170</span> |
| <span id="171">171</span> |
| <span id="172">172</span> |
| <span id="173">173</span> |
| <span id="174">174</span> |
| <span id="175">175</span> |
| <span id="176">176</span> |
| <span id="177">177</span> |
| <span id="178">178</span> |
| <span id="179">179</span> |
| <span id="180">180</span> |
| <span id="181">181</span> |
| <span id="182">182</span> |
| <span id="183">183</span> |
| <span id="184">184</span> |
| <span id="185">185</span> |
| <span id="186">186</span> |
| <span id="187">187</span> |
| <span id="188">188</span> |
| <span id="189">189</span> |
| <span id="190">190</span> |
| <span id="191">191</span> |
| <span id="192">192</span> |
| <span id="193">193</span> |
| <span id="194">194</span> |
| <span id="195">195</span> |
| <span id="196">196</span> |
| <span id="197">197</span> |
| <span id="198">198</span> |
| <span id="199">199</span> |
| <span id="200">200</span> |
| <span id="201">201</span> |
| <span id="202">202</span> |
| <span id="203">203</span> |
| <span id="204">204</span> |
| <span id="205">205</span> |
| <span id="206">206</span> |
| <span id="207">207</span> |
| <span id="208">208</span> |
| <span id="209">209</span> |
| <span id="210">210</span> |
| <span id="211">211</span> |
| <span id="212">212</span> |
| <span id="213">213</span> |
| <span id="214">214</span> |
| <span id="215">215</span> |
| <span id="216">216</span> |
| <span id="217">217</span> |
| <span id="218">218</span> |
| <span id="219">219</span> |
| <span id="220">220</span> |
| <span id="221">221</span> |
| <span id="222">222</span> |
| <span id="223">223</span> |
| <span id="224">224</span> |
| <span id="225">225</span> |
| <span id="226">226</span> |
| <span id="227">227</span> |
| <span id="228">228</span> |
| <span id="229">229</span> |
| <span id="230">230</span> |
| <span id="231">231</span> |
| <span id="232">232</span> |
| <span id="233">233</span> |
| <span id="234">234</span> |
| <span id="235">235</span> |
| <span id="236">236</span> |
| <span id="237">237</span> |
| <span id="238">238</span> |
| <span id="239">239</span> |
| <span id="240">240</span> |
| <span id="241">241</span> |
| <span id="242">242</span> |
| <span id="243">243</span> |
| <span id="244">244</span> |
| <span id="245">245</span> |
| <span id="246">246</span> |
| <span id="247">247</span> |
| <span id="248">248</span> |
| <span id="249">249</span> |
| <span id="250">250</span> |
| <span id="251">251</span> |
| <span id="252">252</span> |
| <span id="253">253</span> |
| <span id="254">254</span> |
| <span id="255">255</span> |
| <span id="256">256</span> |
| <span id="257">257</span> |
| <span id="258">258</span> |
| <span id="259">259</span> |
| <span id="260">260</span> |
| <span id="261">261</span> |
| <span id="262">262</span> |
| <span id="263">263</span> |
| <span id="264">264</span> |
| <span id="265">265</span> |
| <span id="266">266</span> |
| <span id="267">267</span> |
| <span id="268">268</span> |
| <span id="269">269</span> |
| <span id="270">270</span> |
| <span id="271">271</span> |
| <span id="272">272</span> |
| <span id="273">273</span> |
| <span id="274">274</span> |
| <span id="275">275</span> |
| <span id="276">276</span> |
| <span id="277">277</span> |
| <span id="278">278</span> |
| <span id="279">279</span> |
| <span id="280">280</span> |
| <span id="281">281</span> |
| <span id="282">282</span> |
| <span id="283">283</span> |
| <span id="284">284</span> |
| <span id="285">285</span> |
| <span id="286">286</span> |
| <span id="287">287</span> |
| <span id="288">288</span> |
| <span id="289">289</span> |
| <span id="290">290</span> |
| <span id="291">291</span> |
| <span id="292">292</span> |
| <span id="293">293</span> |
| <span id="294">294</span> |
| <span id="295">295</span> |
| <span id="296">296</span> |
| <span id="297">297</span> |
| <span id="298">298</span> |
| <span id="299">299</span> |
| <span id="300">300</span> |
| <span id="301">301</span> |
| <span id="302">302</span> |
| <span id="303">303</span> |
| <span id="304">304</span> |
| <span id="305">305</span> |
| <span id="306">306</span> |
| <span id="307">307</span> |
| <span id="308">308</span> |
| <span id="309">309</span> |
| <span id="310">310</span> |
| <span id="311">311</span> |
| <span id="312">312</span> |
| <span id="313">313</span> |
| <span id="314">314</span> |
| <span id="315">315</span> |
| <span id="316">316</span> |
| <span id="317">317</span> |
| <span id="318">318</span> |
| <span id="319">319</span> |
| <span id="320">320</span> |
| <span id="321">321</span> |
| <span id="322">322</span> |
| <span id="323">323</span> |
| <span id="324">324</span> |
| <span id="325">325</span> |
| <span id="326">326</span> |
| <span id="327">327</span> |
| <span id="328">328</span> |
| <span id="329">329</span> |
| <span id="330">330</span> |
| <span id="331">331</span> |
| <span id="332">332</span> |
| <span id="333">333</span> |
| <span id="334">334</span> |
| <span id="335">335</span> |
| <span id="336">336</span> |
| <span id="337">337</span> |
| <span id="338">338</span> |
| <span id="339">339</span> |
| <span id="340">340</span> |
| <span id="341">341</span> |
| <span id="342">342</span> |
| <span id="343">343</span> |
| <span id="344">344</span> |
| <span id="345">345</span> |
| <span id="346">346</span> |
| <span id="347">347</span> |
| <span id="348">348</span> |
| <span id="349">349</span> |
| <span id="350">350</span> |
| <span id="351">351</span> |
| <span id="352">352</span> |
| <span id="353">353</span> |
| <span id="354">354</span> |
| <span id="355">355</span> |
| <span id="356">356</span> |
| <span id="357">357</span> |
| <span id="358">358</span> |
| <span id="359">359</span> |
| <span id="360">360</span> |
| <span id="361">361</span> |
| <span id="362">362</span> |
| <span id="363">363</span> |
| <span id="364">364</span> |
| <span id="365">365</span> |
| <span id="366">366</span> |
| <span id="367">367</span> |
| <span id="368">368</span> |
| <span id="369">369</span> |
| <span id="370">370</span> |
| <span id="371">371</span> |
| <span id="372">372</span> |
| <span id="373">373</span> |
| <span id="374">374</span> |
| <span id="375">375</span> |
| <span id="376">376</span> |
| <span id="377">377</span> |
| <span id="378">378</span> |
| <span id="379">379</span> |
| <span id="380">380</span> |
| <span id="381">381</span> |
| <span id="382">382</span> |
| <span id="383">383</span> |
| <span id="384">384</span> |
| <span id="385">385</span> |
| <span id="386">386</span> |
| <span id="387">387</span> |
| <span id="388">388</span> |
| <span id="389">389</span> |
| <span id="390">390</span> |
| <span id="391">391</span> |
| <span id="392">392</span> |
| <span id="393">393</span> |
| <span id="394">394</span> |
| <span id="395">395</span> |
| <span id="396">396</span> |
| <span id="397">397</span> |
| <span id="398">398</span> |
| <span id="399">399</span> |
| <span id="400">400</span> |
| <span id="401">401</span> |
| <span id="402">402</span> |
| <span id="403">403</span> |
| <span id="404">404</span> |
| <span id="405">405</span> |
| <span id="406">406</span> |
| <span id="407">407</span> |
| <span id="408">408</span> |
| <span id="409">409</span> |
| <span id="410">410</span> |
| <span id="411">411</span> |
| <span id="412">412</span> |
| <span id="413">413</span> |
| <span id="414">414</span> |
| <span id="415">415</span> |
| <span id="416">416</span> |
| <span id="417">417</span> |
| <span id="418">418</span> |
| <span id="419">419</span> |
| <span id="420">420</span> |
| <span id="421">421</span> |
| <span id="422">422</span> |
| <span id="423">423</span> |
| <span id="424">424</span> |
| <span id="425">425</span> |
| <span id="426">426</span> |
| <span id="427">427</span> |
| <span id="428">428</span> |
| <span id="429">429</span> |
| <span id="430">430</span> |
| <span id="431">431</span> |
| <span id="432">432</span> |
| <span id="433">433</span> |
| <span id="434">434</span> |
| <span id="435">435</span> |
| <span id="436">436</span> |
| <span id="437">437</span> |
| <span id="438">438</span> |
| <span id="439">439</span> |
| <span id="440">440</span> |
| <span id="441">441</span> |
| <span id="442">442</span> |
| <span id="443">443</span> |
| <span id="444">444</span> |
| <span id="445">445</span> |
| <span id="446">446</span> |
| <span id="447">447</span> |
| <span id="448">448</span> |
| <span id="449">449</span> |
| <span id="450">450</span> |
| <span id="451">451</span> |
| <span id="452">452</span> |
| <span id="453">453</span> |
| <span id="454">454</span> |
| <span id="455">455</span> |
| <span id="456">456</span> |
| <span id="457">457</span> |
| <span id="458">458</span> |
| <span id="459">459</span> |
| <span id="460">460</span> |
| <span id="461">461</span> |
| <span id="462">462</span> |
| <span id="463">463</span> |
| <span id="464">464</span> |
| <span id="465">465</span> |
| <span id="466">466</span> |
| <span id="467">467</span> |
| <span id="468">468</span> |
| <span id="469">469</span> |
| <span id="470">470</span> |
| <span id="471">471</span> |
| <span id="472">472</span> |
| <span id="473">473</span> |
| <span id="474">474</span> |
| <span id="475">475</span> |
| <span id="476">476</span> |
| <span id="477">477</span> |
| <span id="478">478</span> |
| <span id="479">479</span> |
| <span id="480">480</span> |
| <span id="481">481</span> |
| <span id="482">482</span> |
| <span id="483">483</span> |
| <span id="484">484</span> |
| <span id="485">485</span> |
| <span id="486">486</span> |
| <span id="487">487</span> |
| <span id="488">488</span> |
| <span id="489">489</span> |
| <span id="490">490</span> |
| <span id="491">491</span> |
| <span id="492">492</span> |
| <span id="493">493</span> |
| <span id="494">494</span> |
| <span id="495">495</span> |
| <span id="496">496</span> |
| <span id="497">497</span> |
| <span id="498">498</span> |
| <span id="499">499</span> |
| <span id="500">500</span> |
| <span id="501">501</span> |
| <span id="502">502</span> |
| <span id="503">503</span> |
| <span id="504">504</span> |
| <span id="505">505</span> |
| <span id="506">506</span> |
| <span id="507">507</span> |
| <span id="508">508</span> |
| <span id="509">509</span> |
| <span id="510">510</span> |
| <span id="511">511</span> |
| <span id="512">512</span> |
| <span id="513">513</span> |
| <span id="514">514</span> |
| <span id="515">515</span> |
| <span id="516">516</span> |
| <span id="517">517</span> |
| <span id="518">518</span> |
| <span id="519">519</span> |
| <span id="520">520</span> |
| <span id="521">521</span> |
| <span id="522">522</span> |
| <span id="523">523</span> |
| <span id="524">524</span> |
| <span id="525">525</span> |
| <span id="526">526</span> |
| <span id="527">527</span> |
| <span id="528">528</span> |
| <span id="529">529</span> |
| <span id="530">530</span> |
| <span id="531">531</span> |
| <span id="532">532</span> |
| <span id="533">533</span> |
| <span id="534">534</span> |
| <span id="535">535</span> |
| <span id="536">536</span> |
| <span id="537">537</span> |
| <span id="538">538</span> |
| <span id="539">539</span> |
| <span id="540">540</span> |
| <span id="541">541</span> |
| <span id="542">542</span> |
| <span id="543">543</span> |
| <span id="544">544</span> |
| <span id="545">545</span> |
| <span id="546">546</span> |
| <span id="547">547</span> |
| <span id="548">548</span> |
| <span id="549">549</span> |
| <span id="550">550</span> |
| <span id="551">551</span> |
| <span id="552">552</span> |
| <span id="553">553</span> |
| <span id="554">554</span> |
| <span id="555">555</span> |
| <span id="556">556</span> |
| <span id="557">557</span> |
| <span id="558">558</span> |
| <span id="559">559</span> |
| <span id="560">560</span> |
| <span id="561">561</span> |
| <span id="562">562</span> |
| <span id="563">563</span> |
| <span id="564">564</span> |
| <span id="565">565</span> |
| <span id="566">566</span> |
| <span id="567">567</span> |
| <span id="568">568</span> |
| <span id="569">569</span> |
| <span id="570">570</span> |
| <span id="571">571</span> |
| <span id="572">572</span> |
| <span id="573">573</span> |
| <span id="574">574</span> |
| <span id="575">575</span> |
| <span id="576">576</span> |
| <span id="577">577</span> |
| <span id="578">578</span> |
| <span id="579">579</span> |
| <span id="580">580</span> |
| <span id="581">581</span> |
| <span id="582">582</span> |
| <span id="583">583</span> |
| <span id="584">584</span> |
| <span id="585">585</span> |
| <span id="586">586</span> |
| <span id="587">587</span> |
| <span id="588">588</span> |
| <span id="589">589</span> |
| <span id="590">590</span> |
| <span id="591">591</span> |
| <span id="592">592</span> |
| <span id="593">593</span> |
| <span id="594">594</span> |
| <span id="595">595</span> |
| <span id="596">596</span> |
| <span id="597">597</span> |
| <span id="598">598</span> |
| <span id="599">599</span> |
| <span id="600">600</span> |
| <span id="601">601</span> |
| <span id="602">602</span> |
| <span id="603">603</span> |
| <span id="604">604</span> |
| <span id="605">605</span> |
| <span id="606">606</span> |
| <span id="607">607</span> |
| <span id="608">608</span> |
| <span id="609">609</span> |
| <span id="610">610</span> |
| <span id="611">611</span> |
| <span id="612">612</span> |
| <span id="613">613</span> |
| <span id="614">614</span> |
| <span id="615">615</span> |
| <span id="616">616</span> |
| <span id="617">617</span> |
| <span id="618">618</span> |
| <span id="619">619</span> |
| <span id="620">620</span> |
| <span id="621">621</span> |
| <span id="622">622</span> |
| <span id="623">623</span> |
| <span id="624">624</span> |
| <span id="625">625</span> |
| <span id="626">626</span> |
| <span id="627">627</span> |
| <span id="628">628</span> |
| <span id="629">629</span> |
| <span id="630">630</span> |
| <span id="631">631</span> |
| <span id="632">632</span> |
| <span id="633">633</span> |
| <span id="634">634</span> |
| <span id="635">635</span> |
| <span id="636">636</span> |
| <span id="637">637</span> |
| <span id="638">638</span> |
| <span id="639">639</span> |
| <span id="640">640</span> |
| <span id="641">641</span> |
| <span id="642">642</span> |
| <span id="643">643</span> |
| <span id="644">644</span> |
| <span id="645">645</span> |
| <span id="646">646</span> |
| <span id="647">647</span> |
| <span id="648">648</span> |
| <span id="649">649</span> |
| <span id="650">650</span> |
| <span id="651">651</span> |
| <span id="652">652</span> |
| <span id="653">653</span> |
| <span id="654">654</span> |
| <span id="655">655</span> |
| <span id="656">656</span> |
| <span id="657">657</span> |
| <span id="658">658</span> |
| <span id="659">659</span> |
| <span id="660">660</span> |
| <span id="661">661</span> |
| <span id="662">662</span> |
| <span id="663">663</span> |
| <span id="664">664</span> |
| <span id="665">665</span> |
| <span id="666">666</span> |
| <span id="667">667</span> |
| <span id="668">668</span> |
| <span id="669">669</span> |
| <span id="670">670</span> |
| <span id="671">671</span> |
| <span id="672">672</span> |
| <span id="673">673</span> |
| <span id="674">674</span> |
| <span id="675">675</span> |
| <span id="676">676</span> |
| <span id="677">677</span> |
| <span id="678">678</span> |
| <span id="679">679</span> |
| <span id="680">680</span> |
| <span id="681">681</span> |
| <span id="682">682</span> |
| <span id="683">683</span> |
| <span id="684">684</span> |
| <span id="685">685</span> |
| <span id="686">686</span> |
| <span id="687">687</span> |
| <span id="688">688</span> |
| <span id="689">689</span> |
| <span id="690">690</span> |
| <span id="691">691</span> |
| <span id="692">692</span> |
| <span id="693">693</span> |
| <span id="694">694</span> |
| <span id="695">695</span> |
| <span id="696">696</span> |
| <span id="697">697</span> |
| <span id="698">698</span> |
| <span id="699">699</span> |
| <span id="700">700</span> |
| <span id="701">701</span> |
| <span id="702">702</span> |
| <span id="703">703</span> |
| <span id="704">704</span> |
| <span id="705">705</span> |
| <span id="706">706</span> |
| <span id="707">707</span> |
| <span id="708">708</span> |
| <span id="709">709</span> |
| <span id="710">710</span> |
| <span id="711">711</span> |
| <span id="712">712</span> |
| <span id="713">713</span> |
| <span id="714">714</span> |
| <span id="715">715</span> |
| <span id="716">716</span> |
| <span id="717">717</span> |
| <span id="718">718</span> |
| <span id="719">719</span> |
| <span id="720">720</span> |
| <span id="721">721</span> |
| <span id="722">722</span> |
| <span id="723">723</span> |
| <span id="724">724</span> |
| <span id="725">725</span> |
| <span id="726">726</span> |
| <span id="727">727</span> |
| <span id="728">728</span> |
| <span id="729">729</span> |
| <span id="730">730</span> |
| <span id="731">731</span> |
| <span id="732">732</span> |
| <span id="733">733</span> |
| <span id="734">734</span> |
| <span id="735">735</span> |
| <span id="736">736</span> |
| <span id="737">737</span> |
| <span id="738">738</span> |
| <span id="739">739</span> |
| <span id="740">740</span> |
| <span id="741">741</span> |
| <span id="742">742</span> |
| <span id="743">743</span> |
| <span id="744">744</span> |
| <span id="745">745</span> |
| <span id="746">746</span> |
| <span id="747">747</span> |
| <span id="748">748</span> |
| <span id="749">749</span> |
| <span id="750">750</span> |
| <span id="751">751</span> |
| <span id="752">752</span> |
| <span id="753">753</span> |
| <span id="754">754</span> |
| <span id="755">755</span> |
| <span id="756">756</span> |
| <span id="757">757</span> |
| <span id="758">758</span> |
| <span id="759">759</span> |
| <span id="760">760</span> |
| <span id="761">761</span> |
| <span id="762">762</span> |
| <span id="763">763</span> |
| <span id="764">764</span> |
| <span id="765">765</span> |
| <span id="766">766</span> |
| <span id="767">767</span> |
| <span id="768">768</span> |
| <span id="769">769</span> |
| <span id="770">770</span> |
| <span id="771">771</span> |
| <span id="772">772</span> |
| <span id="773">773</span> |
| <span id="774">774</span> |
| <span id="775">775</span> |
| <span id="776">776</span> |
| <span id="777">777</span> |
| <span id="778">778</span> |
| <span id="779">779</span> |
| <span id="780">780</span> |
| <span id="781">781</span> |
| <span id="782">782</span> |
| <span id="783">783</span> |
| <span id="784">784</span> |
| <span id="785">785</span> |
| <span id="786">786</span> |
| <span id="787">787</span> |
| <span id="788">788</span> |
| <span id="789">789</span> |
| <span id="790">790</span> |
| <span id="791">791</span> |
| <span id="792">792</span> |
| <span id="793">793</span> |
| <span id="794">794</span> |
| <span id="795">795</span> |
| <span id="796">796</span> |
| <span id="797">797</span> |
| <span id="798">798</span> |
| <span id="799">799</span> |
| <span id="800">800</span> |
| <span id="801">801</span> |
| <span id="802">802</span> |
| <span id="803">803</span> |
| <span id="804">804</span> |
| <span id="805">805</span> |
| <span id="806">806</span> |
| <span id="807">807</span> |
| <span id="808">808</span> |
| <span id="809">809</span> |
| <span id="810">810</span> |
| <span id="811">811</span> |
| <span id="812">812</span> |
| <span id="813">813</span> |
| <span id="814">814</span> |
| <span id="815">815</span> |
| <span id="816">816</span> |
| <span id="817">817</span> |
| <span id="818">818</span> |
| <span id="819">819</span> |
| <span id="820">820</span> |
| <span id="821">821</span> |
| <span id="822">822</span> |
| <span id="823">823</span> |
| <span id="824">824</span> |
| <span id="825">825</span> |
| <span id="826">826</span> |
| <span id="827">827</span> |
| <span id="828">828</span> |
| <span id="829">829</span> |
| <span id="830">830</span> |
| <span id="831">831</span> |
| <span id="832">832</span> |
| <span id="833">833</span> |
| <span id="834">834</span> |
| <span id="835">835</span> |
| <span id="836">836</span> |
| <span id="837">837</span> |
| <span id="838">838</span> |
| <span id="839">839</span> |
| <span id="840">840</span> |
| <span id="841">841</span> |
| <span id="842">842</span> |
| <span id="843">843</span> |
| <span id="844">844</span> |
| <span id="845">845</span> |
| <span id="846">846</span> |
| <span id="847">847</span> |
| <span id="848">848</span> |
| <span id="849">849</span> |
| <span id="850">850</span> |
| <span id="851">851</span> |
| <span id="852">852</span> |
| <span id="853">853</span> |
| <span id="854">854</span> |
| <span id="855">855</span> |
| <span id="856">856</span> |
| <span id="857">857</span> |
| <span id="858">858</span> |
| <span id="859">859</span> |
| <span id="860">860</span> |
| <span id="861">861</span> |
| <span id="862">862</span> |
| <span id="863">863</span> |
| <span id="864">864</span> |
| <span id="865">865</span> |
| <span id="866">866</span> |
| <span id="867">867</span> |
| <span id="868">868</span> |
| <span id="869">869</span> |
| <span id="870">870</span> |
| <span id="871">871</span> |
| <span id="872">872</span> |
| <span id="873">873</span> |
| <span id="874">874</span> |
| <span id="875">875</span> |
| <span id="876">876</span> |
| <span id="877">877</span> |
| <span id="878">878</span> |
| <span id="879">879</span> |
| <span id="880">880</span> |
| <span id="881">881</span> |
| <span id="882">882</span> |
| <span id="883">883</span> |
| <span id="884">884</span> |
| <span id="885">885</span> |
| <span id="886">886</span> |
| <span id="887">887</span> |
| <span id="888">888</span> |
| <span id="889">889</span> |
| <span id="890">890</span> |
| <span id="891">891</span> |
| <span id="892">892</span> |
| <span id="893">893</span> |
| <span id="894">894</span> |
| <span id="895">895</span> |
| <span id="896">896</span> |
| <span id="897">897</span> |
| <span id="898">898</span> |
| <span id="899">899</span> |
| <span id="900">900</span> |
| <span id="901">901</span> |
| <span id="902">902</span> |
| <span id="903">903</span> |
| <span id="904">904</span> |
| <span id="905">905</span> |
| <span id="906">906</span> |
| <span id="907">907</span> |
| <span id="908">908</span> |
| <span id="909">909</span> |
| <span id="910">910</span> |
| <span id="911">911</span> |
| <span id="912">912</span> |
| <span id="913">913</span> |
| <span id="914">914</span> |
| <span id="915">915</span> |
| <span id="916">916</span> |
| <span id="917">917</span> |
| <span id="918">918</span> |
| <span id="919">919</span> |
| <span id="920">920</span> |
| <span id="921">921</span> |
| <span id="922">922</span> |
| <span id="923">923</span> |
| <span id="924">924</span> |
| <span id="925">925</span> |
| <span id="926">926</span> |
| <span id="927">927</span> |
| <span id="928">928</span> |
| <span id="929">929</span> |
| <span id="930">930</span> |
| <span id="931">931</span> |
| <span id="932">932</span> |
| <span id="933">933</span> |
| <span id="934">934</span> |
| <span id="935">935</span> |
| <span id="936">936</span> |
| <span id="937">937</span> |
| <span id="938">938</span> |
| <span id="939">939</span> |
| <span id="940">940</span> |
| <span id="941">941</span> |
| <span id="942">942</span> |
| <span id="943">943</span> |
| <span id="944">944</span> |
| <span id="945">945</span> |
| <span id="946">946</span> |
| <span id="947">947</span> |
| <span id="948">948</span> |
| <span id="949">949</span> |
| <span id="950">950</span> |
| <span id="951">951</span> |
| <span id="952">952</span> |
| <span id="953">953</span> |
| <span id="954">954</span> |
| <span id="955">955</span> |
| <span id="956">956</span> |
| <span id="957">957</span> |
| <span id="958">958</span> |
| <span id="959">959</span> |
| <span id="960">960</span> |
| <span id="961">961</span> |
| <span id="962">962</span> |
| <span id="963">963</span> |
| <span id="964">964</span> |
| <span id="965">965</span> |
| <span id="966">966</span> |
| <span id="967">967</span> |
| <span id="968">968</span> |
| <span id="969">969</span> |
| <span id="970">970</span> |
| <span id="971">971</span> |
| <span id="972">972</span> |
| <span id="973">973</span> |
| <span id="974">974</span> |
| <span id="975">975</span> |
| <span id="976">976</span> |
| <span id="977">977</span> |
| <span id="978">978</span> |
| <span id="979">979</span> |
| <span id="980">980</span> |
| <span id="981">981</span> |
| <span id="982">982</span> |
| <span id="983">983</span> |
| <span id="984">984</span> |
| <span id="985">985</span> |
| <span id="986">986</span> |
| <span id="987">987</span> |
| <span id="988">988</span> |
| <span id="989">989</span> |
| <span id="990">990</span> |
| <span id="991">991</span> |
| <span id="992">992</span> |
| <span id="993">993</span> |
| <span id="994">994</span> |
| <span id="995">995</span> |
| <span id="996">996</span> |
| <span id="997">997</span> |
| <span id="998">998</span> |
| <span id="999">999</span> |
| <span id="1000">1000</span> |
| <span id="1001">1001</span> |
| <span id="1002">1002</span> |
| <span id="1003">1003</span> |
| <span id="1004">1004</span> |
| </pre><pre class="rust"><code><span class="kw">use </span><span class="kw">crate</span>::error::{Error, ErrorCode, <span class="prelude-ty">Result</span>}; |
| <span class="kw">use </span>alloc::vec::Vec; |
| <span class="kw">use </span>core::char; |
| <span class="kw">use </span>core::cmp; |
| <span class="kw">use </span>core::ops::Deref; |
| <span class="kw">use </span>core::str; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">use </span><span class="kw">crate</span>::io; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">use </span><span class="kw">crate</span>::iter::LineColIterator; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span><span class="kw">use </span><span class="kw">crate</span>::raw::BorrowedRawDeserializer; |
| <span class="attribute">#[cfg(all(feature = <span class="string">"raw_value"</span>, feature = <span class="string">"std"</span>))] |
| </span><span class="kw">use </span><span class="kw">crate</span>::raw::OwnedRawDeserializer; |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span><span class="kw">use </span>serde::de::Visitor; |
| |
| <span class="doccomment">/// Trait used by the deserializer for iterating over input. This is manually |
| /// "specialized" for iterating over &[u8]. Once feature(specialization) is |
| /// stable we can use actual specialization. |
| /// |
| /// This trait is sealed and cannot be implemented for types outside of |
| /// `serde_json`. |
| </span><span class="kw">pub trait </span>Read<<span class="lifetime">'de</span>>: private::Sealed { |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><u8>>; |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">fn </span>peek(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><u8>>; |
| |
| <span class="doccomment">/// Only valid after a call to peek(). Discards the peeked byte. |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">fn </span>discard(<span class="kw-2">&mut </span><span class="self">self</span>); |
| |
| <span class="doccomment">/// Position of the most recent call to next(). |
| /// |
| /// The most recent call was probably next() and not peek(), but this method |
| /// should try to return a sensible result if the most recent call was |
| /// actually peek() because we don't always know. |
| /// |
| /// Only called in case of an error, so performance is not important. |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">fn </span>position(<span class="kw-2">&</span><span class="self">self</span>) -> Position; |
| |
| <span class="doccomment">/// Position of the most recent call to peek(). |
| /// |
| /// The most recent call was probably peek() and not next(), but this method |
| /// should try to return a sensible result if the most recent call was |
| /// actually next() because we don't always know. |
| /// |
| /// Only called in case of an error, so performance is not important. |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">fn </span>peek_position(<span class="kw-2">&</span><span class="self">self</span>) -> Position; |
| |
| <span class="doccomment">/// Offset from the beginning of the input to the next byte that would be |
| /// returned by next() or peek(). |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">fn </span>byte_offset(<span class="kw-2">&</span><span class="self">self</span>) -> usize; |
| |
| <span class="doccomment">/// Assumes the previous byte was a quotation mark. Parses a JSON-escaped |
| /// string until the next quotation mark using the given scratch space if |
| /// necessary. The scratch space is initially empty. |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">fn </span>parse_str<<span class="lifetime">'s</span>>(<span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>) -> <span class="prelude-ty">Result</span><Reference<<span class="lifetime">'de</span>, <span class="lifetime">'s</span>, str>>; |
| |
| <span class="doccomment">/// Assumes the previous byte was a quotation mark. Parses a JSON-escaped |
| /// string until the next quotation mark using the given scratch space if |
| /// necessary. The scratch space is initially empty. |
| /// |
| /// This function returns the raw bytes in the string with escape sequences |
| /// expanded but without performing unicode validation. |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">fn </span>parse_str_raw<<span class="lifetime">'s</span>>( |
| <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, |
| scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>, |
| ) -> <span class="prelude-ty">Result</span><Reference<<span class="lifetime">'de</span>, <span class="lifetime">'s</span>, [u8]>>; |
| |
| <span class="doccomment">/// Assumes the previous byte was a quotation mark. Parses a JSON-escaped |
| /// string until the next quotation mark but discards the data. |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">fn </span>ignore_str(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><()>; |
| |
| <span class="doccomment">/// Assumes the previous byte was a hex escape sequnce ('\u') in a string. |
| /// Parses next hexadecimal sequence. |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">fn </span>decode_hex_escape(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u16>; |
| |
| <span class="doccomment">/// Switch raw buffering mode on. |
| /// |
| /// This is used when deserializing `RawValue`. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| #[doc(hidden)] |
| </span><span class="kw">fn </span>begin_raw_buffering(<span class="kw-2">&mut </span><span class="self">self</span>); |
| |
| <span class="doccomment">/// Switch raw buffering mode off and provides the raw buffered data to the |
| /// given visitor. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| #[doc(hidden)] |
| </span><span class="kw">fn </span>end_raw_buffering<V>(<span class="kw-2">&mut </span><span class="self">self</span>, visitor: V) -> <span class="prelude-ty">Result</span><V::Value> |
| <span class="kw">where |
| </span>V: Visitor<<span class="lifetime">'de</span>>; |
| |
| <span class="doccomment">/// Whether StreamDeserializer::next needs to check the failed flag. True |
| /// for IoRead, false for StrRead and SliceRead which can track failure by |
| /// truncating their input slice to avoid the extra check on every next |
| /// call. |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">const </span>should_early_return_if_failed: bool; |
| |
| <span class="doccomment">/// Mark a persistent failure of StreamDeserializer, either by setting the |
| /// flag or by truncating the input data. |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">fn </span>set_failed(<span class="kw-2">&mut </span><span class="self">self</span>, failed: <span class="kw-2">&mut </span>bool); |
| } |
| |
| <span class="kw">pub struct </span>Position { |
| <span class="kw">pub </span>line: usize, |
| <span class="kw">pub </span>column: usize, |
| } |
| |
| <span class="kw">pub enum </span>Reference<<span class="lifetime">'b</span>, <span class="lifetime">'c</span>, T> |
| <span class="kw">where |
| </span>T: <span class="question-mark">?</span>Sized + <span class="lifetime">'static</span>, |
| { |
| Borrowed(<span class="kw-2">&</span><span class="lifetime">'b </span>T), |
| Copied(<span class="kw-2">&</span><span class="lifetime">'c </span>T), |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'b</span>, <span class="lifetime">'c</span>, T> Deref <span class="kw">for </span>Reference<<span class="lifetime">'b</span>, <span class="lifetime">'c</span>, T> |
| <span class="kw">where |
| </span>T: <span class="question-mark">?</span>Sized + <span class="lifetime">'static</span>, |
| { |
| <span class="kw">type </span>Target = T; |
| |
| <span class="kw">fn </span>deref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span><span class="self">Self</span>::Target { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Reference::Borrowed(b) => b, |
| Reference::Copied(c) => c, |
| } |
| } |
| } |
| |
| <span class="doccomment">/// JSON input source that reads from a std::io input stream. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| #[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"std"</span>)))] |
| </span><span class="kw">pub struct </span>IoRead<R> |
| <span class="kw">where |
| </span>R: io::Read, |
| { |
| iter: LineColIterator<io::Bytes<R>>, |
| <span class="doccomment">/// Temporary storage of peeked byte. |
| </span>ch: <span class="prelude-ty">Option</span><u8>, |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span>raw_buffer: <span class="prelude-ty">Option</span><Vec<u8>>, |
| } |
| |
| <span class="doccomment">/// JSON input source that reads from a slice of bytes. |
| </span><span class="comment">// |
| // This is more efficient than other iterators because peek() can be read-only |
| // and we can compute line/col position only if an error happens. |
| </span><span class="kw">pub struct </span>SliceRead<<span class="lifetime">'a</span>> { |
| slice: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8], |
| <span class="doccomment">/// Index of the *next* byte that will be returned by next() or peek(). |
| </span>index: usize, |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span>raw_buffering_start_index: usize, |
| } |
| |
| <span class="doccomment">/// JSON input source that reads from a UTF-8 string. |
| </span><span class="comment">// |
| // Able to elide UTF-8 checks by assuming that the input is valid UTF-8. |
| </span><span class="kw">pub struct </span>StrRead<<span class="lifetime">'a</span>> { |
| delegate: SliceRead<<span class="lifetime">'a</span>>, |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span>data: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| } |
| |
| <span class="comment">// Prevent users from implementing the Read trait. |
| </span><span class="kw">mod </span>private { |
| <span class="kw">pub trait </span>Sealed {} |
| } |
| |
| <span class="comment">////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><R> IoRead<R> |
| <span class="kw">where |
| </span>R: io::Read, |
| { |
| <span class="doccomment">/// Create a JSON input source to read from a std::io input stream. |
| </span><span class="kw">pub fn </span>new(reader: R) -> <span class="self">Self </span>{ |
| IoRead { |
| iter: LineColIterator::new(reader.bytes()), |
| ch: <span class="prelude-val">None</span>, |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span>raw_buffer: <span class="prelude-val">None</span>, |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><R> private::Sealed <span class="kw">for </span>IoRead<R> <span class="kw">where </span>R: io::Read {} |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><R> IoRead<R> |
| <span class="kw">where |
| </span>R: io::Read, |
| { |
| <span class="kw">fn </span>parse_str_bytes<<span class="lifetime">'s</span>, T, F>( |
| <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, |
| scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>, |
| validate: bool, |
| result: F, |
| ) -> <span class="prelude-ty">Result</span><T> |
| <span class="kw">where |
| </span>T: <span class="lifetime">'s</span>, |
| F: FnOnce(<span class="kw-2">&</span><span class="lifetime">'s </span><span class="self">Self</span>, <span class="kw-2">&</span><span class="lifetime">'s </span>[u8]) -> <span class="prelude-ty">Result</span><T>, |
| { |
| <span class="kw">loop </span>{ |
| <span class="kw">let </span>ch = <span class="macro">tri!</span>(next_or_eof(<span class="self">self</span>)); |
| <span class="kw">if </span>!ESCAPE[ch <span class="kw">as </span>usize] { |
| scratch.push(ch); |
| <span class="kw">continue</span>; |
| } |
| <span class="kw">match </span>ch { |
| <span class="string">b'"' </span>=> { |
| <span class="kw">return </span>result(<span class="self">self</span>, scratch); |
| } |
| <span class="string">b'\\' </span>=> { |
| <span class="macro">tri!</span>(parse_escape(<span class="self">self</span>, validate, scratch)); |
| } |
| <span class="kw">_ </span>=> { |
| <span class="kw">if </span>validate { |
| <span class="kw">return </span>error(<span class="self">self</span>, ErrorCode::ControlCharacterWhileParsingString); |
| } |
| scratch.push(ch); |
| } |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, R> Read<<span class="lifetime">'de</span>> <span class="kw">for </span>IoRead<R> |
| <span class="kw">where |
| </span>R: io::Read, |
| { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><u8>> { |
| <span class="kw">match </span><span class="self">self</span>.ch.take() { |
| <span class="prelude-val">Some</span>(ch) => { |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span>{ |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(buf) = <span class="kw-2">&mut </span><span class="self">self</span>.raw_buffer { |
| buf.push(ch); |
| } |
| } |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(ch)) |
| } |
| <span class="prelude-val">None </span>=> <span class="kw">match </span><span class="self">self</span>.iter.next() { |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(err)) => <span class="prelude-val">Err</span>(Error::io(err)), |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(ch)) => { |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span>{ |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(buf) = <span class="kw-2">&mut </span><span class="self">self</span>.raw_buffer { |
| buf.push(ch); |
| } |
| } |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(ch)) |
| } |
| <span class="prelude-val">None </span>=> <span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>), |
| }, |
| } |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>peek(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><u8>> { |
| <span class="kw">match </span><span class="self">self</span>.ch { |
| <span class="prelude-val">Some</span>(ch) => <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(ch)), |
| <span class="prelude-val">None </span>=> <span class="kw">match </span><span class="self">self</span>.iter.next() { |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(err)) => <span class="prelude-val">Err</span>(Error::io(err)), |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(ch)) => { |
| <span class="self">self</span>.ch = <span class="prelude-val">Some</span>(ch); |
| <span class="prelude-val">Ok</span>(<span class="self">self</span>.ch) |
| } |
| <span class="prelude-val">None </span>=> <span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>), |
| }, |
| } |
| } |
| |
| <span class="attribute">#[cfg(not(feature = <span class="string">"raw_value"</span>))] |
| #[inline] |
| </span><span class="kw">fn </span>discard(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.ch = <span class="prelude-val">None</span>; |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span><span class="kw">fn </span>discard(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(ch) = <span class="self">self</span>.ch.take() { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(buf) = <span class="kw-2">&mut </span><span class="self">self</span>.raw_buffer { |
| buf.push(ch); |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>position(<span class="kw-2">&</span><span class="self">self</span>) -> Position { |
| Position { |
| line: <span class="self">self</span>.iter.line(), |
| column: <span class="self">self</span>.iter.col(), |
| } |
| } |
| |
| <span class="kw">fn </span>peek_position(<span class="kw-2">&</span><span class="self">self</span>) -> Position { |
| <span class="comment">// The LineColIterator updates its position during peek() so it has the |
| // right one here. |
| </span><span class="self">self</span>.position() |
| } |
| |
| <span class="kw">fn </span>byte_offset(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="kw">match </span><span class="self">self</span>.ch { |
| <span class="prelude-val">Some</span>(<span class="kw">_</span>) => <span class="self">self</span>.iter.byte_offset() - <span class="number">1</span>, |
| <span class="prelude-val">None </span>=> <span class="self">self</span>.iter.byte_offset(), |
| } |
| } |
| |
| <span class="kw">fn </span>parse_str<<span class="lifetime">'s</span>>(<span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>) -> <span class="prelude-ty">Result</span><Reference<<span class="lifetime">'de</span>, <span class="lifetime">'s</span>, str>> { |
| <span class="self">self</span>.parse_str_bytes(scratch, <span class="bool-val">true</span>, as_str) |
| .map(Reference::Copied) |
| } |
| |
| <span class="kw">fn </span>parse_str_raw<<span class="lifetime">'s</span>>( |
| <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, |
| scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>, |
| ) -> <span class="prelude-ty">Result</span><Reference<<span class="lifetime">'de</span>, <span class="lifetime">'s</span>, [u8]>> { |
| <span class="self">self</span>.parse_str_bytes(scratch, <span class="bool-val">false</span>, |<span class="kw">_</span>, bytes| <span class="prelude-val">Ok</span>(bytes)) |
| .map(Reference::Copied) |
| } |
| |
| <span class="kw">fn </span>ignore_str(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">loop </span>{ |
| <span class="kw">let </span>ch = <span class="macro">tri!</span>(next_or_eof(<span class="self">self</span>)); |
| <span class="kw">if </span>!ESCAPE[ch <span class="kw">as </span>usize] { |
| <span class="kw">continue</span>; |
| } |
| <span class="kw">match </span>ch { |
| <span class="string">b'"' </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(()); |
| } |
| <span class="string">b'\\' </span>=> { |
| <span class="macro">tri!</span>(ignore_escape(<span class="self">self</span>)); |
| } |
| <span class="kw">_ </span>=> { |
| <span class="kw">return </span>error(<span class="self">self</span>, ErrorCode::ControlCharacterWhileParsingString); |
| } |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>decode_hex_escape(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u16> { |
| <span class="kw">let </span><span class="kw-2">mut </span>n = <span class="number">0</span>; |
| <span class="kw">for _ in </span><span class="number">0</span>..<span class="number">4 </span>{ |
| <span class="kw">match </span>decode_hex_val(<span class="macro">tri!</span>(next_or_eof(<span class="self">self</span>))) { |
| <span class="prelude-val">None </span>=> <span class="kw">return </span>error(<span class="self">self</span>, ErrorCode::InvalidEscape), |
| <span class="prelude-val">Some</span>(val) => { |
| n = (n << <span class="number">4</span>) + val; |
| } |
| } |
| } |
| <span class="prelude-val">Ok</span>(n) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span><span class="kw">fn </span>begin_raw_buffering(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.raw_buffer = <span class="prelude-val">Some</span>(Vec::new()); |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span><span class="kw">fn </span>end_raw_buffering<V>(<span class="kw-2">&mut </span><span class="self">self</span>, visitor: V) -> <span class="prelude-ty">Result</span><V::Value> |
| <span class="kw">where |
| </span>V: Visitor<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>raw = <span class="self">self</span>.raw_buffer.take().unwrap(); |
| <span class="kw">let </span>raw = <span class="kw">match </span>String::from_utf8(raw) { |
| <span class="prelude-val">Ok</span>(raw) => raw, |
| <span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="kw">return </span>error(<span class="self">self</span>, ErrorCode::InvalidUnicodeCodePoint), |
| }; |
| visitor.visit_map(OwnedRawDeserializer { |
| raw_value: <span class="prelude-val">Some</span>(raw), |
| }) |
| } |
| |
| <span class="kw">const </span>should_early_return_if_failed: bool = <span class="bool-val">true</span>; |
| |
| <span class="attribute">#[inline] |
| #[cold] |
| </span><span class="kw">fn </span>set_failed(<span class="kw-2">&mut </span><span class="self">self</span>, failed: <span class="kw-2">&mut </span>bool) { |
| <span class="kw-2">*</span>failed = <span class="bool-val">true</span>; |
| } |
| } |
| |
| <span class="comment">////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">impl</span><<span class="lifetime">'a</span>> SliceRead<<span class="lifetime">'a</span>> { |
| <span class="doccomment">/// Create a JSON input source to read from a slice of bytes. |
| </span><span class="kw">pub fn </span>new(slice: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8]) -> <span class="self">Self </span>{ |
| SliceRead { |
| slice, |
| index: <span class="number">0</span>, |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span>raw_buffering_start_index: <span class="number">0</span>, |
| } |
| } |
| |
| <span class="kw">fn </span>position_of_index(<span class="kw-2">&</span><span class="self">self</span>, i: usize) -> Position { |
| <span class="kw">let </span><span class="kw-2">mut </span>position = Position { line: <span class="number">1</span>, column: <span class="number">0 </span>}; |
| <span class="kw">for </span>ch <span class="kw">in </span><span class="kw-2">&</span><span class="self">self</span>.slice[..i] { |
| <span class="kw">match </span><span class="kw-2">*</span>ch { |
| <span class="string">b'\n' </span>=> { |
| position.line += <span class="number">1</span>; |
| position.column = <span class="number">0</span>; |
| } |
| <span class="kw">_ </span>=> { |
| position.column += <span class="number">1</span>; |
| } |
| } |
| } |
| position |
| } |
| |
| <span class="doccomment">/// The big optimization here over IoRead is that if the string contains no |
| /// backslash escape sequences, the returned &str is a slice of the raw JSON |
| /// data so we avoid copying into the scratch space. |
| </span><span class="kw">fn </span>parse_str_bytes<<span class="lifetime">'s</span>, T, F>( |
| <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, |
| scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>, |
| validate: bool, |
| result: F, |
| ) -> <span class="prelude-ty">Result</span><Reference<<span class="lifetime">'a</span>, <span class="lifetime">'s</span>, T>> |
| <span class="kw">where |
| </span>T: <span class="question-mark">?</span>Sized + <span class="lifetime">'s</span>, |
| F: <span class="kw">for</span><<span class="lifetime">'f</span>> FnOnce(<span class="kw-2">&</span><span class="lifetime">'s </span><span class="self">Self</span>, <span class="kw-2">&</span><span class="lifetime">'f </span>[u8]) -> <span class="prelude-ty">Result</span><<span class="kw-2">&</span><span class="lifetime">'f </span>T>, |
| { |
| <span class="comment">// Index of the first byte not yet copied into the scratch space. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>start = <span class="self">self</span>.index; |
| |
| <span class="kw">loop </span>{ |
| <span class="kw">while </span><span class="self">self</span>.index < <span class="self">self</span>.slice.len() && !ESCAPE[<span class="self">self</span>.slice[<span class="self">self</span>.index] <span class="kw">as </span>usize] { |
| <span class="self">self</span>.index += <span class="number">1</span>; |
| } |
| <span class="kw">if </span><span class="self">self</span>.index == <span class="self">self</span>.slice.len() { |
| <span class="kw">return </span>error(<span class="self">self</span>, ErrorCode::EofWhileParsingString); |
| } |
| <span class="kw">match </span><span class="self">self</span>.slice[<span class="self">self</span>.index] { |
| <span class="string">b'"' </span>=> { |
| <span class="kw">if </span>scratch.is_empty() { |
| <span class="comment">// Fast path: return a slice of the raw JSON without any |
| // copying. |
| </span><span class="kw">let </span>borrowed = <span class="kw-2">&</span><span class="self">self</span>.slice[start..<span class="self">self</span>.index]; |
| <span class="self">self</span>.index += <span class="number">1</span>; |
| <span class="kw">return </span>result(<span class="self">self</span>, borrowed).map(Reference::Borrowed); |
| } <span class="kw">else </span>{ |
| scratch.extend_from_slice(<span class="kw-2">&</span><span class="self">self</span>.slice[start..<span class="self">self</span>.index]); |
| <span class="self">self</span>.index += <span class="number">1</span>; |
| <span class="kw">return </span>result(<span class="self">self</span>, scratch).map(Reference::Copied); |
| } |
| } |
| <span class="string">b'\\' </span>=> { |
| scratch.extend_from_slice(<span class="kw-2">&</span><span class="self">self</span>.slice[start..<span class="self">self</span>.index]); |
| <span class="self">self</span>.index += <span class="number">1</span>; |
| <span class="macro">tri!</span>(parse_escape(<span class="self">self</span>, validate, scratch)); |
| start = <span class="self">self</span>.index; |
| } |
| <span class="kw">_ </span>=> { |
| <span class="self">self</span>.index += <span class="number">1</span>; |
| <span class="kw">if </span>validate { |
| <span class="kw">return </span>error(<span class="self">self</span>, ErrorCode::ControlCharacterWhileParsingString); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> private::Sealed <span class="kw">for </span>SliceRead<<span class="lifetime">'a</span>> {} |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Read<<span class="lifetime">'a</span>> <span class="kw">for </span>SliceRead<<span class="lifetime">'a</span>> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><u8>> { |
| <span class="comment">// `Ok(self.slice.get(self.index).map(|ch| { self.index += 1; *ch }))` |
| // is about 10% slower. |
| </span><span class="prelude-val">Ok</span>(<span class="kw">if </span><span class="self">self</span>.index < <span class="self">self</span>.slice.len() { |
| <span class="kw">let </span>ch = <span class="self">self</span>.slice[<span class="self">self</span>.index]; |
| <span class="self">self</span>.index += <span class="number">1</span>; |
| <span class="prelude-val">Some</span>(ch) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>peek(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><u8>> { |
| <span class="comment">// `Ok(self.slice.get(self.index).map(|ch| *ch))` is about 10% slower |
| // for some reason. |
| </span><span class="prelude-val">Ok</span>(<span class="kw">if </span><span class="self">self</span>.index < <span class="self">self</span>.slice.len() { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.slice[<span class="self">self</span>.index]) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>discard(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.index += <span class="number">1</span>; |
| } |
| |
| <span class="kw">fn </span>position(<span class="kw-2">&</span><span class="self">self</span>) -> Position { |
| <span class="self">self</span>.position_of_index(<span class="self">self</span>.index) |
| } |
| |
| <span class="kw">fn </span>peek_position(<span class="kw-2">&</span><span class="self">self</span>) -> Position { |
| <span class="comment">// Cap it at slice.len() just in case the most recent call was next() |
| // and it returned the last byte. |
| </span><span class="self">self</span>.position_of_index(cmp::min(<span class="self">self</span>.slice.len(), <span class="self">self</span>.index + <span class="number">1</span>)) |
| } |
| |
| <span class="kw">fn </span>byte_offset(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.index |
| } |
| |
| <span class="kw">fn </span>parse_str<<span class="lifetime">'s</span>>(<span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>) -> <span class="prelude-ty">Result</span><Reference<<span class="lifetime">'a</span>, <span class="lifetime">'s</span>, str>> { |
| <span class="self">self</span>.parse_str_bytes(scratch, <span class="bool-val">true</span>, as_str) |
| } |
| |
| <span class="kw">fn </span>parse_str_raw<<span class="lifetime">'s</span>>( |
| <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, |
| scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>, |
| ) -> <span class="prelude-ty">Result</span><Reference<<span class="lifetime">'a</span>, <span class="lifetime">'s</span>, [u8]>> { |
| <span class="self">self</span>.parse_str_bytes(scratch, <span class="bool-val">false</span>, |<span class="kw">_</span>, bytes| <span class="prelude-val">Ok</span>(bytes)) |
| } |
| |
| <span class="kw">fn </span>ignore_str(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">loop </span>{ |
| <span class="kw">while </span><span class="self">self</span>.index < <span class="self">self</span>.slice.len() && !ESCAPE[<span class="self">self</span>.slice[<span class="self">self</span>.index] <span class="kw">as </span>usize] { |
| <span class="self">self</span>.index += <span class="number">1</span>; |
| } |
| <span class="kw">if </span><span class="self">self</span>.index == <span class="self">self</span>.slice.len() { |
| <span class="kw">return </span>error(<span class="self">self</span>, ErrorCode::EofWhileParsingString); |
| } |
| <span class="kw">match </span><span class="self">self</span>.slice[<span class="self">self</span>.index] { |
| <span class="string">b'"' </span>=> { |
| <span class="self">self</span>.index += <span class="number">1</span>; |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(()); |
| } |
| <span class="string">b'\\' </span>=> { |
| <span class="self">self</span>.index += <span class="number">1</span>; |
| <span class="macro">tri!</span>(ignore_escape(<span class="self">self</span>)); |
| } |
| <span class="kw">_ </span>=> { |
| <span class="kw">return </span>error(<span class="self">self</span>, ErrorCode::ControlCharacterWhileParsingString); |
| } |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>decode_hex_escape(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u16> { |
| <span class="kw">if </span><span class="self">self</span>.index + <span class="number">4 </span>> <span class="self">self</span>.slice.len() { |
| <span class="self">self</span>.index = <span class="self">self</span>.slice.len(); |
| <span class="kw">return </span>error(<span class="self">self</span>, ErrorCode::EofWhileParsingString); |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>n = <span class="number">0</span>; |
| <span class="kw">for _ in </span><span class="number">0</span>..<span class="number">4 </span>{ |
| <span class="kw">let </span>ch = decode_hex_val(<span class="self">self</span>.slice[<span class="self">self</span>.index]); |
| <span class="self">self</span>.index += <span class="number">1</span>; |
| <span class="kw">match </span>ch { |
| <span class="prelude-val">None </span>=> <span class="kw">return </span>error(<span class="self">self</span>, ErrorCode::InvalidEscape), |
| <span class="prelude-val">Some</span>(val) => { |
| n = (n << <span class="number">4</span>) + val; |
| } |
| } |
| } |
| <span class="prelude-val">Ok</span>(n) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span><span class="kw">fn </span>begin_raw_buffering(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.raw_buffering_start_index = <span class="self">self</span>.index; |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span><span class="kw">fn </span>end_raw_buffering<V>(<span class="kw-2">&mut </span><span class="self">self</span>, visitor: V) -> <span class="prelude-ty">Result</span><V::Value> |
| <span class="kw">where |
| </span>V: Visitor<<span class="lifetime">'a</span>>, |
| { |
| <span class="kw">let </span>raw = <span class="kw-2">&</span><span class="self">self</span>.slice[<span class="self">self</span>.raw_buffering_start_index..<span class="self">self</span>.index]; |
| <span class="kw">let </span>raw = <span class="kw">match </span>str::from_utf8(raw) { |
| <span class="prelude-val">Ok</span>(raw) => raw, |
| <span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="kw">return </span>error(<span class="self">self</span>, ErrorCode::InvalidUnicodeCodePoint), |
| }; |
| visitor.visit_map(BorrowedRawDeserializer { |
| raw_value: <span class="prelude-val">Some</span>(raw), |
| }) |
| } |
| |
| <span class="kw">const </span>should_early_return_if_failed: bool = <span class="bool-val">false</span>; |
| |
| <span class="attribute">#[inline] |
| #[cold] |
| </span><span class="kw">fn </span>set_failed(<span class="kw-2">&mut </span><span class="self">self</span>, _failed: <span class="kw-2">&mut </span>bool) { |
| <span class="self">self</span>.slice = <span class="kw-2">&</span><span class="self">self</span>.slice[..<span class="self">self</span>.index]; |
| } |
| } |
| |
| <span class="comment">////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">impl</span><<span class="lifetime">'a</span>> StrRead<<span class="lifetime">'a</span>> { |
| <span class="doccomment">/// Create a JSON input source to read from a UTF-8 string. |
| </span><span class="kw">pub fn </span>new(s: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> <span class="self">Self </span>{ |
| StrRead { |
| delegate: SliceRead::new(s.as_bytes()), |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span>data: s, |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> private::Sealed <span class="kw">for </span>StrRead<<span class="lifetime">'a</span>> {} |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Read<<span class="lifetime">'a</span>> <span class="kw">for </span>StrRead<<span class="lifetime">'a</span>> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><u8>> { |
| <span class="self">self</span>.delegate.next() |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>peek(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><u8>> { |
| <span class="self">self</span>.delegate.peek() |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>discard(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.delegate.discard(); |
| } |
| |
| <span class="kw">fn </span>position(<span class="kw-2">&</span><span class="self">self</span>) -> Position { |
| <span class="self">self</span>.delegate.position() |
| } |
| |
| <span class="kw">fn </span>peek_position(<span class="kw-2">&</span><span class="self">self</span>) -> Position { |
| <span class="self">self</span>.delegate.peek_position() |
| } |
| |
| <span class="kw">fn </span>byte_offset(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.delegate.byte_offset() |
| } |
| |
| <span class="kw">fn </span>parse_str<<span class="lifetime">'s</span>>(<span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>) -> <span class="prelude-ty">Result</span><Reference<<span class="lifetime">'a</span>, <span class="lifetime">'s</span>, str>> { |
| <span class="self">self</span>.delegate.parse_str_bytes(scratch, <span class="bool-val">true</span>, |<span class="kw">_</span>, bytes| { |
| <span class="comment">// The deserialization input came in as &str with a UTF-8 guarantee, |
| // and the \u-escapes are checked along the way, so don't need to |
| // check here. |
| </span><span class="prelude-val">Ok</span>(<span class="kw">unsafe </span>{ str::from_utf8_unchecked(bytes) }) |
| }) |
| } |
| |
| <span class="kw">fn </span>parse_str_raw<<span class="lifetime">'s</span>>( |
| <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, |
| scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>, |
| ) -> <span class="prelude-ty">Result</span><Reference<<span class="lifetime">'a</span>, <span class="lifetime">'s</span>, [u8]>> { |
| <span class="self">self</span>.delegate.parse_str_raw(scratch) |
| } |
| |
| <span class="kw">fn </span>ignore_str(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><()> { |
| <span class="self">self</span>.delegate.ignore_str() |
| } |
| |
| <span class="kw">fn </span>decode_hex_escape(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u16> { |
| <span class="self">self</span>.delegate.decode_hex_escape() |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span><span class="kw">fn </span>begin_raw_buffering(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.delegate.begin_raw_buffering(); |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span><span class="kw">fn </span>end_raw_buffering<V>(<span class="kw-2">&mut </span><span class="self">self</span>, visitor: V) -> <span class="prelude-ty">Result</span><V::Value> |
| <span class="kw">where |
| </span>V: Visitor<<span class="lifetime">'a</span>>, |
| { |
| <span class="kw">let </span>raw = <span class="kw-2">&</span><span class="self">self</span>.data[<span class="self">self</span>.delegate.raw_buffering_start_index..<span class="self">self</span>.delegate.index]; |
| visitor.visit_map(BorrowedRawDeserializer { |
| raw_value: <span class="prelude-val">Some</span>(raw), |
| }) |
| } |
| |
| <span class="kw">const </span>should_early_return_if_failed: bool = <span class="bool-val">false</span>; |
| |
| <span class="attribute">#[inline] |
| #[cold] |
| </span><span class="kw">fn </span>set_failed(<span class="kw-2">&mut </span><span class="self">self</span>, failed: <span class="kw-2">&mut </span>bool) { |
| <span class="self">self</span>.delegate.set_failed(failed); |
| } |
| } |
| |
| <span class="comment">////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'de</span>, R> private::Sealed <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>R <span class="kw">where </span>R: Read<<span class="lifetime">'de</span>> {} |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'de</span>, R> Read<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>R |
| <span class="kw">where |
| </span>R: Read<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><u8>> { |
| R::next(<span class="self">self</span>) |
| } |
| |
| <span class="kw">fn </span>peek(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><u8>> { |
| R::peek(<span class="self">self</span>) |
| } |
| |
| <span class="kw">fn </span>discard(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| R::discard(<span class="self">self</span>); |
| } |
| |
| <span class="kw">fn </span>position(<span class="kw-2">&</span><span class="self">self</span>) -> Position { |
| R::position(<span class="self">self</span>) |
| } |
| |
| <span class="kw">fn </span>peek_position(<span class="kw-2">&</span><span class="self">self</span>) -> Position { |
| R::peek_position(<span class="self">self</span>) |
| } |
| |
| <span class="kw">fn </span>byte_offset(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| R::byte_offset(<span class="self">self</span>) |
| } |
| |
| <span class="kw">fn </span>parse_str<<span class="lifetime">'s</span>>(<span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>) -> <span class="prelude-ty">Result</span><Reference<<span class="lifetime">'de</span>, <span class="lifetime">'s</span>, str>> { |
| R::parse_str(<span class="self">self</span>, scratch) |
| } |
| |
| <span class="kw">fn </span>parse_str_raw<<span class="lifetime">'s</span>>( |
| <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span><span class="self">self</span>, |
| scratch: <span class="kw-2">&</span><span class="lifetime">'s </span><span class="kw-2">mut </span>Vec<u8>, |
| ) -> <span class="prelude-ty">Result</span><Reference<<span class="lifetime">'de</span>, <span class="lifetime">'s</span>, [u8]>> { |
| R::parse_str_raw(<span class="self">self</span>, scratch) |
| } |
| |
| <span class="kw">fn </span>ignore_str(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><()> { |
| R::ignore_str(<span class="self">self</span>) |
| } |
| |
| <span class="kw">fn </span>decode_hex_escape(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u16> { |
| R::decode_hex_escape(<span class="self">self</span>) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span><span class="kw">fn </span>begin_raw_buffering(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| R::begin_raw_buffering(<span class="self">self</span>); |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"raw_value"</span>)] |
| </span><span class="kw">fn </span>end_raw_buffering<V>(<span class="kw-2">&mut </span><span class="self">self</span>, visitor: V) -> <span class="prelude-ty">Result</span><V::Value> |
| <span class="kw">where |
| </span>V: Visitor<<span class="lifetime">'de</span>>, |
| { |
| R::end_raw_buffering(<span class="self">self</span>, visitor) |
| } |
| |
| <span class="kw">const </span>should_early_return_if_failed: bool = R::should_early_return_if_failed; |
| |
| <span class="kw">fn </span>set_failed(<span class="kw-2">&mut </span><span class="self">self</span>, failed: <span class="kw-2">&mut </span>bool) { |
| R::set_failed(<span class="self">self</span>, failed); |
| } |
| } |
| |
| <span class="comment">////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="doccomment">/// Marker for whether StreamDeserializer can implement FusedIterator. |
| </span><span class="kw">pub trait </span>Fused: private::Sealed {} |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Fused <span class="kw">for </span>SliceRead<<span class="lifetime">'a</span>> {} |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Fused <span class="kw">for </span>StrRead<<span class="lifetime">'a</span>> {} |
| |
| <span class="comment">// Lookup table of bytes that must be escaped. A value of true at index i means |
| // that byte i requires an escape sequence in the input. |
| </span><span class="kw">static </span>ESCAPE: [bool; <span class="number">256</span>] = { |
| <span class="kw">const </span>CT: bool = <span class="bool-val">true</span>; <span class="comment">// control character \x00..=\x1F |
| </span><span class="kw">const </span>QU: bool = <span class="bool-val">true</span>; <span class="comment">// quote \x22 |
| </span><span class="kw">const </span>BS: bool = <span class="bool-val">true</span>; <span class="comment">// backslash \x5C |
| </span><span class="kw">const </span>__: bool = <span class="bool-val">false</span>; <span class="comment">// allow unescaped |
| </span>[ |
| <span class="comment">// 1 2 3 4 5 6 7 8 9 A B C D E F |
| </span>CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, <span class="comment">// 0 |
| </span>CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, CT, <span class="comment">// 1 |
| </span>__, __, QU, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 2 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 3 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 4 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, BS, __, __, __, <span class="comment">// 5 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 6 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 7 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 8 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 9 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// A |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// B |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// C |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// D |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// E |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// F |
| </span>] |
| }; |
| |
| <span class="kw">fn </span>next_or_eof<<span class="lifetime">'de</span>, R>(read: <span class="kw-2">&mut </span>R) -> <span class="prelude-ty">Result</span><u8> |
| <span class="kw">where |
| </span>R: <span class="question-mark">?</span>Sized + Read<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">match </span><span class="macro">tri!</span>(read.next()) { |
| <span class="prelude-val">Some</span>(b) => <span class="prelude-val">Ok</span>(b), |
| <span class="prelude-val">None </span>=> error(read, ErrorCode::EofWhileParsingString), |
| } |
| } |
| |
| <span class="kw">fn </span>peek_or_eof<<span class="lifetime">'de</span>, R>(read: <span class="kw-2">&mut </span>R) -> <span class="prelude-ty">Result</span><u8> |
| <span class="kw">where |
| </span>R: <span class="question-mark">?</span>Sized + Read<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">match </span><span class="macro">tri!</span>(read.peek()) { |
| <span class="prelude-val">Some</span>(b) => <span class="prelude-val">Ok</span>(b), |
| <span class="prelude-val">None </span>=> error(read, ErrorCode::EofWhileParsingString), |
| } |
| } |
| |
| <span class="kw">fn </span>error<<span class="lifetime">'de</span>, R, T>(read: <span class="kw-2">&</span>R, reason: ErrorCode) -> <span class="prelude-ty">Result</span><T> |
| <span class="kw">where |
| </span>R: <span class="question-mark">?</span>Sized + Read<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>position = read.position(); |
| <span class="prelude-val">Err</span>(Error::syntax(reason, position.line, position.column)) |
| } |
| |
| <span class="kw">fn </span>as_str<<span class="lifetime">'de</span>, <span class="lifetime">'s</span>, R: Read<<span class="lifetime">'de</span>>>(read: <span class="kw-2">&</span>R, slice: <span class="kw-2">&</span><span class="lifetime">'s </span>[u8]) -> <span class="prelude-ty">Result</span><<span class="kw-2">&</span><span class="lifetime">'s </span>str> { |
| str::from_utf8(slice).or_else(|<span class="kw">_</span>| error(read, ErrorCode::InvalidUnicodeCodePoint)) |
| } |
| |
| <span class="doccomment">/// Parses a JSON escape sequence and appends it into the scratch space. Assumes |
| /// the previous byte read was a backslash. |
| </span><span class="kw">fn </span>parse_escape<<span class="lifetime">'de</span>, R: Read<<span class="lifetime">'de</span>>>( |
| read: <span class="kw-2">&mut </span>R, |
| validate: bool, |
| scratch: <span class="kw-2">&mut </span>Vec<u8>, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span>ch = <span class="macro">tri!</span>(next_or_eof(read)); |
| |
| <span class="kw">match </span>ch { |
| <span class="string">b'"' </span>=> scratch.push(<span class="string">b'"'</span>), |
| <span class="string">b'\\' </span>=> scratch.push(<span class="string">b'\\'</span>), |
| <span class="string">b'/' </span>=> scratch.push(<span class="string">b'/'</span>), |
| <span class="string">b'b' </span>=> scratch.push(<span class="string">b'\x08'</span>), |
| <span class="string">b'f' </span>=> scratch.push(<span class="string">b'\x0c'</span>), |
| <span class="string">b'n' </span>=> scratch.push(<span class="string">b'\n'</span>), |
| <span class="string">b'r' </span>=> scratch.push(<span class="string">b'\r'</span>), |
| <span class="string">b't' </span>=> scratch.push(<span class="string">b'\t'</span>), |
| <span class="string">b'u' </span>=> { |
| <span class="kw">fn </span>encode_surrogate(scratch: <span class="kw-2">&mut </span>Vec<u8>, n: u16) { |
| scratch.extend_from_slice(<span class="kw-2">&</span>[ |
| (n >> <span class="number">12 </span>& <span class="number">0b0000_1111</span>) <span class="kw">as </span>u8 | <span class="number">0b1110_0000</span>, |
| (n >> <span class="number">6 </span>& <span class="number">0b0011_1111</span>) <span class="kw">as </span>u8 | <span class="number">0b1000_0000</span>, |
| (n & <span class="number">0b0011_1111</span>) <span class="kw">as </span>u8 | <span class="number">0b1000_0000</span>, |
| ]); |
| } |
| |
| <span class="kw">let </span>c = <span class="kw">match </span><span class="macro">tri!</span>(read.decode_hex_escape()) { |
| n @ <span class="number">0xDC00</span>..=<span class="number">0xDFFF </span>=> { |
| <span class="kw">return if </span>validate { |
| error(read, ErrorCode::LoneLeadingSurrogateInHexEscape) |
| } <span class="kw">else </span>{ |
| encode_surrogate(scratch, n); |
| <span class="prelude-val">Ok</span>(()) |
| }; |
| } |
| |
| <span class="comment">// Non-BMP characters are encoded as a sequence of two hex |
| // escapes, representing UTF-16 surrogates. If deserializing a |
| // utf-8 string the surrogates are required to be paired, |
| // whereas deserializing a byte string accepts lone surrogates. |
| </span>n1 @ <span class="number">0xD800</span>..=<span class="number">0xDBFF </span>=> { |
| <span class="kw">if </span><span class="macro">tri!</span>(peek_or_eof(read)) == <span class="string">b'\\' </span>{ |
| read.discard(); |
| } <span class="kw">else </span>{ |
| <span class="kw">return if </span>validate { |
| read.discard(); |
| error(read, ErrorCode::UnexpectedEndOfHexEscape) |
| } <span class="kw">else </span>{ |
| encode_surrogate(scratch, n1); |
| <span class="prelude-val">Ok</span>(()) |
| }; |
| } |
| |
| <span class="kw">if </span><span class="macro">tri!</span>(peek_or_eof(read)) == <span class="string">b'u' </span>{ |
| read.discard(); |
| } <span class="kw">else </span>{ |
| <span class="kw">return if </span>validate { |
| read.discard(); |
| error(read, ErrorCode::UnexpectedEndOfHexEscape) |
| } <span class="kw">else </span>{ |
| encode_surrogate(scratch, n1); |
| <span class="comment">// The \ prior to this byte started an escape sequence, |
| // so we need to parse that now. This recursive call |
| // does not blow the stack on malicious input because |
| // the escape is not \u, so it will be handled by one |
| // of the easy nonrecursive cases. |
| </span>parse_escape(read, validate, scratch) |
| }; |
| } |
| |
| <span class="kw">let </span>n2 = <span class="macro">tri!</span>(read.decode_hex_escape()); |
| |
| <span class="kw">if </span>n2 < <span class="number">0xDC00 </span>|| n2 > <span class="number">0xDFFF </span>{ |
| <span class="kw">return </span>error(read, ErrorCode::LoneLeadingSurrogateInHexEscape); |
| } |
| |
| <span class="kw">let </span>n = (((n1 - <span class="number">0xD800</span>) <span class="kw">as </span>u32) << <span class="number">10 </span>| (n2 - <span class="number">0xDC00</span>) <span class="kw">as </span>u32) + <span class="number">0x1_0000</span>; |
| |
| <span class="kw">match </span>char::from_u32(n) { |
| <span class="prelude-val">Some</span>(c) => c, |
| <span class="prelude-val">None </span>=> { |
| <span class="kw">return </span>error(read, ErrorCode::InvalidUnicodeCodePoint); |
| } |
| } |
| } |
| |
| <span class="comment">// Every u16 outside of the surrogate ranges above is guaranteed |
| // to be a legal char. |
| </span>n => char::from_u32(n <span class="kw">as </span>u32).unwrap(), |
| }; |
| |
| scratch.extend_from_slice(c.encode_utf8(<span class="kw-2">&mut </span>[<span class="number">0_u8</span>; <span class="number">4</span>]).as_bytes()); |
| } |
| <span class="kw">_ </span>=> { |
| <span class="kw">return </span>error(read, ErrorCode::InvalidEscape); |
| } |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// Parses a JSON escape sequence and discards the value. Assumes the previous |
| /// byte read was a backslash. |
| </span><span class="kw">fn </span>ignore_escape<<span class="lifetime">'de</span>, R>(read: <span class="kw-2">&mut </span>R) -> <span class="prelude-ty">Result</span><()> |
| <span class="kw">where |
| </span>R: <span class="question-mark">?</span>Sized + Read<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>ch = <span class="macro">tri!</span>(next_or_eof(read)); |
| |
| <span class="kw">match </span>ch { |
| <span class="string">b'"' </span>| <span class="string">b'\\' </span>| <span class="string">b'/' </span>| <span class="string">b'b' </span>| <span class="string">b'f' </span>| <span class="string">b'n' </span>| <span class="string">b'r' </span>| <span class="string">b't' </span>=> {} |
| <span class="string">b'u' </span>=> { |
| <span class="comment">// At this point we don't care if the codepoint is valid. We just |
| // want to consume it. We don't actually know what is valid or not |
| // at this point, because that depends on if this string will |
| // ultimately be parsed into a string or a byte buffer in the "real" |
| // parse. |
| |
| </span><span class="macro">tri!</span>(read.decode_hex_escape()); |
| } |
| <span class="kw">_ </span>=> { |
| <span class="kw">return </span>error(read, ErrorCode::InvalidEscape); |
| } |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">static </span>HEX: [u8; <span class="number">256</span>] = { |
| <span class="kw">const </span>__: u8 = <span class="number">255</span>; <span class="comment">// not a hex digit |
| </span>[ |
| <span class="comment">// 1 2 3 4 5 6 7 8 9 A B C D E F |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 0 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 1 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 2 |
| </span><span class="number">00</span>, <span class="number">01</span>, <span class="number">02</span>, <span class="number">03</span>, <span class="number">04</span>, <span class="number">05</span>, <span class="number">06</span>, <span class="number">07</span>, <span class="number">08</span>, <span class="number">09</span>, __, __, __, __, __, __, <span class="comment">// 3 |
| </span>__, <span class="number">10</span>, <span class="number">11</span>, <span class="number">12</span>, <span class="number">13</span>, <span class="number">14</span>, <span class="number">15</span>, __, __, __, __, __, __, __, __, __, <span class="comment">// 4 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 5 |
| </span>__, <span class="number">10</span>, <span class="number">11</span>, <span class="number">12</span>, <span class="number">13</span>, <span class="number">14</span>, <span class="number">15</span>, __, __, __, __, __, __, __, __, __, <span class="comment">// 6 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 7 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 8 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// 9 |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// A |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// B |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// C |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// D |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// E |
| </span>__, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, <span class="comment">// F |
| </span>] |
| }; |
| |
| <span class="kw">fn </span>decode_hex_val(val: u8) -> <span class="prelude-ty">Option</span><u16> { |
| <span class="kw">let </span>n = HEX[val <span class="kw">as </span>usize] <span class="kw">as </span>u16; |
| <span class="kw">if </span>n == <span class="number">255 </span>{ |
| <span class="prelude-val">None |
| </span>} <span class="kw">else </span>{ |
| <span class="prelude-val">Some</span>(n) |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="serde_json" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
