| <!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 `/home/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.133/src/internals/check.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>check.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" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../../dark.css" disabled><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script src="../../../crates.js"></script><script defer src="../../../main.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.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"><div class="sidebar-menu" role="button">☰</div><a class="sidebar-logo" href="../../../serde_derive/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.png" alt="logo"></div> |
| </a></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../../../serde_derive/index.html"><img class="rust-logo" src="../../../rust-logo.png" alt="logo"></a><nav class="sub"><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><div> |
| <input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../../settings.html" title="settings"><img width="18" height="18" alt="Change settings" src="../../../wheel.svg"></a></div></form></nav></div><section id="main-content" class="content"><div class="example-wrap"><pre class="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> |
| </pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">internals::ast</span>::{<span class="ident">Container</span>, <span class="ident">Data</span>, <span class="ident">Field</span>, <span class="ident">Style</span>}; |
| <span class="kw">use</span> <span class="ident">internals::attr</span>::{<span class="ident">Identifier</span>, <span class="ident">TagType</span>}; |
| <span class="kw">use</span> <span class="ident">internals</span>::{<span class="ident">ungroup</span>, <span class="ident">Ctxt</span>, <span class="ident">Derive</span>}; |
| <span class="kw">use</span> <span class="ident">syn</span>::{<span class="ident">Member</span>, <span class="ident">Type</span>}; |
| |
| <span class="doccomment">/// Cross-cutting checks that require looking at more than a single attrs</span> |
| <span class="doccomment">/// object. Simpler checks should happen when parsing and building the attrs.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">check</span>(<span class="ident">cx</span>: <span class="kw-2">&</span><span class="ident">Ctxt</span>, <span class="ident">cont</span>: <span class="kw-2">&mut</span> <span class="ident">Container</span>, <span class="ident">derive</span>: <span class="ident">Derive</span>) { |
| <span class="ident">check_getter</span>(<span class="ident">cx</span>, <span class="ident">cont</span>); |
| <span class="ident">check_flatten</span>(<span class="ident">cx</span>, <span class="ident">cont</span>); |
| <span class="ident">check_identifier</span>(<span class="ident">cx</span>, <span class="ident">cont</span>); |
| <span class="ident">check_variant_skip_attrs</span>(<span class="ident">cx</span>, <span class="ident">cont</span>); |
| <span class="ident">check_internal_tag_field_name_conflict</span>(<span class="ident">cx</span>, <span class="ident">cont</span>); |
| <span class="ident">check_adjacent_tag_conflict</span>(<span class="ident">cx</span>, <span class="ident">cont</span>); |
| <span class="ident">check_transparent</span>(<span class="ident">cx</span>, <span class="ident">cont</span>, <span class="ident">derive</span>); |
| <span class="ident">check_from_and_try_from</span>(<span class="ident">cx</span>, <span class="ident">cont</span>); |
| } |
| |
| <span class="doccomment">/// Getters are only allowed inside structs (not enums) with the `remote`</span> |
| <span class="doccomment">/// attribute.</span> |
| <span class="kw">fn</span> <span class="ident">check_getter</span>(<span class="ident">cx</span>: <span class="kw-2">&</span><span class="ident">Ctxt</span>, <span class="ident">cont</span>: <span class="kw-2">&</span><span class="ident">Container</span>) { |
| <span class="kw">match</span> <span class="ident">cont</span>.<span class="ident">data</span> { |
| <span class="ident">Data::Enum</span>(<span class="kw">_</span>) => { |
| <span class="kw">if</span> <span class="ident">cont</span>.<span class="ident">data</span>.<span class="ident">has_getter</span>() { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(getter = \"...\")] is not allowed in an enum"</span>, |
| ); |
| } |
| } |
| <span class="ident">Data::Struct</span>(<span class="kw">_</span>, <span class="kw">_</span>) => { |
| <span class="kw">if</span> <span class="ident">cont</span>.<span class="ident">data</span>.<span class="ident">has_getter</span>() <span class="op">&&</span> <span class="ident">cont</span>.<span class="ident">attrs</span>.<span class="ident">remote</span>().<span class="ident">is_none</span>() { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(getter = \"...\")] can only be used in structs that have #[serde(remote = \"...\")]"</span>, |
| ); |
| } |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Flattening has some restrictions we can test.</span> |
| <span class="kw">fn</span> <span class="ident">check_flatten</span>(<span class="ident">cx</span>: <span class="kw-2">&</span><span class="ident">Ctxt</span>, <span class="ident">cont</span>: <span class="kw-2">&</span><span class="ident">Container</span>) { |
| <span class="kw">match</span> <span class="kw-2">&</span><span class="ident">cont</span>.<span class="ident">data</span> { |
| <span class="ident">Data::Enum</span>(<span class="ident">variants</span>) => { |
| <span class="kw">for</span> <span class="ident">variant</span> <span class="kw">in</span> <span class="ident">variants</span> { |
| <span class="kw">for</span> <span class="ident">field</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">variant</span>.<span class="ident">fields</span> { |
| <span class="ident">check_flatten_field</span>(<span class="ident">cx</span>, <span class="ident">variant</span>.<span class="ident">style</span>, <span class="ident">field</span>); |
| } |
| } |
| } |
| <span class="ident">Data::Struct</span>(<span class="ident">style</span>, <span class="ident">fields</span>) => { |
| <span class="kw">for</span> <span class="ident">field</span> <span class="kw">in</span> <span class="ident">fields</span> { |
| <span class="ident">check_flatten_field</span>(<span class="ident">cx</span>, <span class="kw-2">*</span><span class="ident">style</span>, <span class="ident">field</span>); |
| } |
| } |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">check_flatten_field</span>(<span class="ident">cx</span>: <span class="kw-2">&</span><span class="ident">Ctxt</span>, <span class="ident">style</span>: <span class="ident">Style</span>, <span class="ident">field</span>: <span class="kw-2">&</span><span class="ident">Field</span>) { |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">field</span>.<span class="ident">attrs</span>.<span class="ident">flatten</span>() { |
| <span class="kw">return</span>; |
| } |
| <span class="kw">match</span> <span class="ident">style</span> { |
| <span class="ident">Style::Tuple</span> => { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">field</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(flatten)] cannot be used on tuple structs"</span>, |
| ); |
| } |
| <span class="ident">Style::Newtype</span> => { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">field</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(flatten)] cannot be used on newtype structs"</span>, |
| ); |
| } |
| <span class="kw">_</span> => {} |
| } |
| } |
| |
| <span class="doccomment">/// The `other` attribute must be used at most once and it must be the last</span> |
| <span class="doccomment">/// variant of an enum.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Inside a `variant_identifier` all variants must be unit variants. Inside a</span> |
| <span class="doccomment">/// `field_identifier` all but possibly one variant must be unit variants. The</span> |
| <span class="doccomment">/// last variant may be a newtype variant which is an implicit "other" case.</span> |
| <span class="kw">fn</span> <span class="ident">check_identifier</span>(<span class="ident">cx</span>: <span class="kw-2">&</span><span class="ident">Ctxt</span>, <span class="ident">cont</span>: <span class="kw-2">&</span><span class="ident">Container</span>) { |
| <span class="kw">let</span> <span class="ident">variants</span> <span class="op">=</span> <span class="kw">match</span> <span class="kw-2">&</span><span class="ident">cont</span>.<span class="ident">data</span> { |
| <span class="ident">Data::Enum</span>(<span class="ident">variants</span>) => <span class="ident">variants</span>, |
| <span class="ident">Data::Struct</span>(<span class="kw">_</span>, <span class="kw">_</span>) => { |
| <span class="kw">return</span>; |
| } |
| }; |
| |
| <span class="kw">for</span> (<span class="ident">i</span>, <span class="ident">variant</span>) <span class="kw">in</span> <span class="ident">variants</span>.<span class="ident">iter</span>().<span class="ident">enumerate</span>() { |
| <span class="kw">match</span> ( |
| <span class="ident">variant</span>.<span class="ident">style</span>, |
| <span class="ident">cont</span>.<span class="ident">attrs</span>.<span class="ident">identifier</span>(), |
| <span class="ident">variant</span>.<span class="ident">attrs</span>.<span class="ident">other</span>(), |
| <span class="ident">cont</span>.<span class="ident">attrs</span>.<span class="ident">tag</span>(), |
| ) { |
| <span class="comment">// The `other` attribute may not be used in a variant_identifier.</span> |
| (<span class="kw">_</span>, <span class="ident">Identifier::Variant</span>, <span class="bool-val">true</span>, <span class="kw">_</span>) => { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(other)] may not be used on a variant identifier"</span>, |
| ); |
| } |
| |
| <span class="comment">// Variant with `other` attribute cannot appear in untagged enum</span> |
| (<span class="kw">_</span>, <span class="ident">Identifier::No</span>, <span class="bool-val">true</span>, <span class="kw-2">&</span><span class="ident">TagType::None</span>) => { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(other)] cannot appear on untagged enum"</span>, |
| ); |
| } |
| |
| <span class="comment">// Variant with `other` attribute must be the last one.</span> |
| (<span class="ident">Style::Unit</span>, <span class="ident">Identifier::Field</span>, <span class="bool-val">true</span>, <span class="kw">_</span>) <span class="op">|</span> (<span class="ident">Style::Unit</span>, <span class="ident">Identifier::No</span>, <span class="bool-val">true</span>, <span class="kw">_</span>) => { |
| <span class="kw">if</span> <span class="ident">i</span> <span class="op"><</span> <span class="ident">variants</span>.<span class="ident">len</span>() <span class="op">-</span> <span class="number">1</span> { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(other)] must be on the last variant"</span>, |
| ); |
| } |
| } |
| |
| <span class="comment">// Variant with `other` attribute must be a unit variant.</span> |
| (<span class="kw">_</span>, <span class="ident">Identifier::Field</span>, <span class="bool-val">true</span>, <span class="kw">_</span>) <span class="op">|</span> (<span class="kw">_</span>, <span class="ident">Identifier::No</span>, <span class="bool-val">true</span>, <span class="kw">_</span>) => { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(other)] must be on a unit variant"</span>, |
| ); |
| } |
| |
| <span class="comment">// Any sort of variant is allowed if this is not an identifier.</span> |
| (<span class="kw">_</span>, <span class="ident">Identifier::No</span>, <span class="bool-val">false</span>, <span class="kw">_</span>) => {} |
| |
| <span class="comment">// Unit variant without `other` attribute is always fine.</span> |
| (<span class="ident">Style::Unit</span>, <span class="kw">_</span>, <span class="bool-val">false</span>, <span class="kw">_</span>) => {} |
| |
| <span class="comment">// The last field is allowed to be a newtype catch-all.</span> |
| (<span class="ident">Style::Newtype</span>, <span class="ident">Identifier::Field</span>, <span class="bool-val">false</span>, <span class="kw">_</span>) => { |
| <span class="kw">if</span> <span class="ident">i</span> <span class="op"><</span> <span class="ident">variants</span>.<span class="ident">len</span>() <span class="op">-</span> <span class="number">1</span> { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="macro">format!</span>(<span class="string">"`{}` must be the last variant"</span>, <span class="ident">variant</span>.<span class="ident">ident</span>), |
| ); |
| } |
| } |
| |
| (<span class="kw">_</span>, <span class="ident">Identifier::Field</span>, <span class="bool-val">false</span>, <span class="kw">_</span>) => { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(field_identifier)] may only contain unit variants"</span>, |
| ); |
| } |
| |
| (<span class="kw">_</span>, <span class="ident">Identifier::Variant</span>, <span class="bool-val">false</span>, <span class="kw">_</span>) => { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(variant_identifier)] may only contain unit variants"</span>, |
| ); |
| } |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Skip-(de)serializing attributes are not allowed on variants marked</span> |
| <span class="doccomment">/// (de)serialize_with.</span> |
| <span class="kw">fn</span> <span class="ident">check_variant_skip_attrs</span>(<span class="ident">cx</span>: <span class="kw-2">&</span><span class="ident">Ctxt</span>, <span class="ident">cont</span>: <span class="kw-2">&</span><span class="ident">Container</span>) { |
| <span class="kw">let</span> <span class="ident">variants</span> <span class="op">=</span> <span class="kw">match</span> <span class="kw-2">&</span><span class="ident">cont</span>.<span class="ident">data</span> { |
| <span class="ident">Data::Enum</span>(<span class="ident">variants</span>) => <span class="ident">variants</span>, |
| <span class="ident">Data::Struct</span>(<span class="kw">_</span>, <span class="kw">_</span>) => { |
| <span class="kw">return</span>; |
| } |
| }; |
| |
| <span class="kw">for</span> <span class="ident">variant</span> <span class="kw">in</span> <span class="ident">variants</span>.<span class="ident">iter</span>() { |
| <span class="kw">if</span> <span class="ident">variant</span>.<span class="ident">attrs</span>.<span class="ident">serialize_with</span>().<span class="ident">is_some</span>() { |
| <span class="kw">if</span> <span class="ident">variant</span>.<span class="ident">attrs</span>.<span class="ident">skip_serializing</span>() { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="macro">format!</span>( |
| <span class="string">"variant `{}` cannot have both #[serde(serialize_with)] and #[serde(skip_serializing)]"</span>, |
| <span class="ident">variant</span>.<span class="ident">ident</span> |
| ), |
| ); |
| } |
| |
| <span class="kw">for</span> <span class="ident">field</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">variant</span>.<span class="ident">fields</span> { |
| <span class="kw">let</span> <span class="ident">member</span> <span class="op">=</span> <span class="ident">member_message</span>(<span class="kw-2">&</span><span class="ident">field</span>.<span class="ident">member</span>); |
| |
| <span class="kw">if</span> <span class="ident">field</span>.<span class="ident">attrs</span>.<span class="ident">skip_serializing</span>() { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="macro">format!</span>( |
| <span class="string">"variant `{}` cannot have both #[serde(serialize_with)] and a field {} marked with #[serde(skip_serializing)]"</span>, |
| <span class="ident">variant</span>.<span class="ident">ident</span>, <span class="ident">member</span> |
| ), |
| ); |
| } |
| |
| <span class="kw">if</span> <span class="ident">field</span>.<span class="ident">attrs</span>.<span class="ident">skip_serializing_if</span>().<span class="ident">is_some</span>() { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="macro">format!</span>( |
| <span class="string">"variant `{}` cannot have both #[serde(serialize_with)] and a field {} marked with #[serde(skip_serializing_if)]"</span>, |
| <span class="ident">variant</span>.<span class="ident">ident</span>, <span class="ident">member</span> |
| ), |
| ); |
| } |
| } |
| } |
| |
| <span class="kw">if</span> <span class="ident">variant</span>.<span class="ident">attrs</span>.<span class="ident">deserialize_with</span>().<span class="ident">is_some</span>() { |
| <span class="kw">if</span> <span class="ident">variant</span>.<span class="ident">attrs</span>.<span class="ident">skip_deserializing</span>() { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="macro">format!</span>( |
| <span class="string">"variant `{}` cannot have both #[serde(deserialize_with)] and #[serde(skip_deserializing)]"</span>, |
| <span class="ident">variant</span>.<span class="ident">ident</span> |
| ), |
| ); |
| } |
| |
| <span class="kw">for</span> <span class="ident">field</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">variant</span>.<span class="ident">fields</span> { |
| <span class="kw">if</span> <span class="ident">field</span>.<span class="ident">attrs</span>.<span class="ident">skip_deserializing</span>() { |
| <span class="kw">let</span> <span class="ident">member</span> <span class="op">=</span> <span class="ident">member_message</span>(<span class="kw-2">&</span><span class="ident">field</span>.<span class="ident">member</span>); |
| |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">variant</span>.<span class="ident">original</span>, |
| <span class="macro">format!</span>( |
| <span class="string">"variant `{}` cannot have both #[serde(deserialize_with)] and a field {} marked with #[serde(skip_deserializing)]"</span>, |
| <span class="ident">variant</span>.<span class="ident">ident</span>, <span class="ident">member</span> |
| ), |
| ); |
| } |
| } |
| } |
| } |
| } |
| |
| <span class="doccomment">/// The tag of an internally-tagged struct variant must not be</span> |
| <span class="doccomment">/// the same as either one of its fields, as this would result in</span> |
| <span class="doccomment">/// duplicate keys in the serialized output and/or ambiguity in</span> |
| <span class="doccomment">/// the to-be-deserialized input.</span> |
| <span class="kw">fn</span> <span class="ident">check_internal_tag_field_name_conflict</span>(<span class="ident">cx</span>: <span class="kw-2">&</span><span class="ident">Ctxt</span>, <span class="ident">cont</span>: <span class="kw-2">&</span><span class="ident">Container</span>) { |
| <span class="kw">let</span> <span class="ident">variants</span> <span class="op">=</span> <span class="kw">match</span> <span class="kw-2">&</span><span class="ident">cont</span>.<span class="ident">data</span> { |
| <span class="ident">Data::Enum</span>(<span class="ident">variants</span>) => <span class="ident">variants</span>, |
| <span class="ident">Data::Struct</span>(<span class="kw">_</span>, <span class="kw">_</span>) => <span class="kw">return</span>, |
| }; |
| |
| <span class="kw">let</span> <span class="ident">tag</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">cont</span>.<span class="ident">attrs</span>.<span class="ident">tag</span>() { |
| <span class="ident">TagType::Internal</span> { <span class="ident">tag</span> } => <span class="ident">tag</span>.<span class="ident">as_str</span>(), |
| <span class="ident">TagType::External</span> <span class="op">|</span> <span class="ident">TagType::Adjacent</span> { .. } <span class="op">|</span> <span class="ident">TagType::None</span> => <span class="kw">return</span>, |
| }; |
| |
| <span class="kw">let</span> <span class="ident">diagnose_conflict</span> <span class="op">=</span> <span class="op">|</span><span class="op">|</span> { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="macro">format!</span>(<span class="string">"variant field name `{}` conflicts with internal tag"</span>, <span class="ident">tag</span>), |
| ); |
| }; |
| |
| <span class="kw">for</span> <span class="ident">variant</span> <span class="kw">in</span> <span class="ident">variants</span> { |
| <span class="kw">match</span> <span class="ident">variant</span>.<span class="ident">style</span> { |
| <span class="ident">Style::Struct</span> => { |
| <span class="kw">for</span> <span class="ident">field</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">variant</span>.<span class="ident">fields</span> { |
| <span class="kw">let</span> <span class="ident">check_ser</span> <span class="op">=</span> <span class="op">!</span><span class="ident">field</span>.<span class="ident">attrs</span>.<span class="ident">skip_serializing</span>(); |
| <span class="kw">let</span> <span class="ident">check_de</span> <span class="op">=</span> <span class="op">!</span><span class="ident">field</span>.<span class="ident">attrs</span>.<span class="ident">skip_deserializing</span>(); |
| <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">field</span>.<span class="ident">attrs</span>.<span class="ident">name</span>(); |
| <span class="kw">let</span> <span class="ident">ser_name</span> <span class="op">=</span> <span class="ident">name</span>.<span class="ident">serialize_name</span>(); |
| |
| <span class="kw">if</span> <span class="ident">check_ser</span> <span class="op">&&</span> <span class="ident">ser_name</span> <span class="op">==</span> <span class="ident">tag</span> { |
| <span class="ident">diagnose_conflict</span>(); |
| <span class="kw">return</span>; |
| } |
| |
| <span class="kw">for</span> <span class="ident">de_name</span> <span class="kw">in</span> <span class="ident">field</span>.<span class="ident">attrs</span>.<span class="ident">aliases</span>() { |
| <span class="kw">if</span> <span class="ident">check_de</span> <span class="op">&&</span> <span class="ident">de_name</span> <span class="op">==</span> <span class="ident">tag</span> { |
| <span class="ident">diagnose_conflict</span>(); |
| <span class="kw">return</span>; |
| } |
| } |
| } |
| } |
| <span class="ident">Style::Unit</span> <span class="op">|</span> <span class="ident">Style::Newtype</span> <span class="op">|</span> <span class="ident">Style::Tuple</span> => {} |
| } |
| } |
| } |
| |
| <span class="doccomment">/// In the case of adjacently-tagged enums, the type and the</span> |
| <span class="doccomment">/// contents tag must differ, for the same reason.</span> |
| <span class="kw">fn</span> <span class="ident">check_adjacent_tag_conflict</span>(<span class="ident">cx</span>: <span class="kw-2">&</span><span class="ident">Ctxt</span>, <span class="ident">cont</span>: <span class="kw-2">&</span><span class="ident">Container</span>) { |
| <span class="kw">let</span> (<span class="ident">type_tag</span>, <span class="ident">content_tag</span>) <span class="op">=</span> <span class="kw">match</span> <span class="ident">cont</span>.<span class="ident">attrs</span>.<span class="ident">tag</span>() { |
| <span class="ident">TagType::Adjacent</span> { <span class="ident">tag</span>, <span class="ident">content</span> } => (<span class="ident">tag</span>, <span class="ident">content</span>), |
| <span class="ident">TagType::Internal</span> { .. } <span class="op">|</span> <span class="ident">TagType::External</span> <span class="op">|</span> <span class="ident">TagType::None</span> => <span class="kw">return</span>, |
| }; |
| |
| <span class="kw">if</span> <span class="ident">type_tag</span> <span class="op">==</span> <span class="ident">content_tag</span> { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="macro">format!</span>( |
| <span class="string">"enum tags `{}` for type and content conflict with each other"</span>, |
| <span class="ident">type_tag</span> |
| ), |
| ); |
| } |
| } |
| |
| <span class="doccomment">/// Enums and unit structs cannot be transparent.</span> |
| <span class="kw">fn</span> <span class="ident">check_transparent</span>(<span class="ident">cx</span>: <span class="kw-2">&</span><span class="ident">Ctxt</span>, <span class="ident">cont</span>: <span class="kw-2">&mut</span> <span class="ident">Container</span>, <span class="ident">derive</span>: <span class="ident">Derive</span>) { |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">cont</span>.<span class="ident">attrs</span>.<span class="ident">transparent</span>() { |
| <span class="kw">return</span>; |
| } |
| |
| <span class="kw">if</span> <span class="ident">cont</span>.<span class="ident">attrs</span>.<span class="ident">type_from</span>().<span class="ident">is_some</span>() { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(transparent)] is not allowed with #[serde(from = \"...\")]"</span>, |
| ); |
| } |
| |
| <span class="kw">if</span> <span class="ident">cont</span>.<span class="ident">attrs</span>.<span class="ident">type_try_from</span>().<span class="ident">is_some</span>() { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(transparent)] is not allowed with #[serde(try_from = \"...\")]"</span>, |
| ); |
| } |
| |
| <span class="kw">if</span> <span class="ident">cont</span>.<span class="ident">attrs</span>.<span class="ident">type_into</span>().<span class="ident">is_some</span>() { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(transparent)] is not allowed with #[serde(into = \"...\")]"</span>, |
| ); |
| } |
| |
| <span class="kw">let</span> <span class="ident">fields</span> <span class="op">=</span> <span class="kw">match</span> <span class="kw-2">&mut</span> <span class="ident">cont</span>.<span class="ident">data</span> { |
| <span class="ident">Data::Enum</span>(<span class="kw">_</span>) => { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(transparent)] is not allowed on an enum"</span>, |
| ); |
| <span class="kw">return</span>; |
| } |
| <span class="ident">Data::Struct</span>(<span class="ident">Style::Unit</span>, <span class="kw">_</span>) => { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(transparent)] is not allowed on a unit struct"</span>, |
| ); |
| <span class="kw">return</span>; |
| } |
| <span class="ident">Data::Struct</span>(<span class="kw">_</span>, <span class="ident">fields</span>) => <span class="ident">fields</span>, |
| }; |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">transparent_field</span> <span class="op">=</span> <span class="prelude-val">None</span>; |
| |
| <span class="kw">for</span> <span class="ident">field</span> <span class="kw">in</span> <span class="ident">fields</span> { |
| <span class="kw">if</span> <span class="ident">allow_transparent</span>(<span class="ident">field</span>, <span class="ident">derive</span>) { |
| <span class="kw">if</span> <span class="ident">transparent_field</span>.<span class="ident">is_some</span>() { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(transparent)] requires struct to have at most one transparent field"</span>, |
| ); |
| <span class="kw">return</span>; |
| } |
| <span class="ident">transparent_field</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">field</span>); |
| } |
| } |
| |
| <span class="kw">match</span> <span class="ident">transparent_field</span> { |
| <span class="prelude-val">Some</span>(<span class="ident">transparent_field</span>) => <span class="ident">transparent_field</span>.<span class="ident">attrs</span>.<span class="ident">mark_transparent</span>(), |
| <span class="prelude-val">None</span> => <span class="kw">match</span> <span class="ident">derive</span> { |
| <span class="ident">Derive::Serialize</span> => { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(transparent)] requires at least one field that is not skipped"</span>, |
| ); |
| } |
| <span class="ident">Derive::Deserialize</span> => { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(transparent)] requires at least one field that is neither skipped nor has a default"</span>, |
| ); |
| } |
| }, |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">member_message</span>(<span class="ident">member</span>: <span class="kw-2">&</span><span class="ident">Member</span>) -> <span class="ident">String</span> { |
| <span class="kw">match</span> <span class="ident">member</span> { |
| <span class="ident">Member::Named</span>(<span class="ident">ident</span>) => <span class="macro">format!</span>(<span class="string">"`{}`"</span>, <span class="ident">ident</span>), |
| <span class="ident">Member::Unnamed</span>(<span class="ident">i</span>) => <span class="macro">format!</span>(<span class="string">"#{}"</span>, <span class="ident">i</span>.<span class="ident">index</span>), |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">allow_transparent</span>(<span class="ident">field</span>: <span class="kw-2">&</span><span class="ident">Field</span>, <span class="ident">derive</span>: <span class="ident">Derive</span>) -> <span class="ident">bool</span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="ident">Type::Path</span>(<span class="ident">ty</span>) <span class="op">=</span> <span class="ident">ungroup</span>(<span class="ident">field</span>.<span class="ident">ty</span>) { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">seg</span>) <span class="op">=</span> <span class="ident">ty</span>.<span class="ident">path</span>.<span class="ident">segments</span>.<span class="ident">last</span>() { |
| <span class="kw">if</span> <span class="ident">seg</span>.<span class="ident">ident</span> <span class="op">==</span> <span class="string">"PhantomData"</span> { |
| <span class="kw">return</span> <span class="bool-val">false</span>; |
| } |
| } |
| } |
| |
| <span class="kw">match</span> <span class="ident">derive</span> { |
| <span class="ident">Derive::Serialize</span> => <span class="op">!</span><span class="ident">field</span>.<span class="ident">attrs</span>.<span class="ident">skip_serializing</span>(), |
| <span class="ident">Derive::Deserialize</span> => <span class="op">!</span><span class="ident">field</span>.<span class="ident">attrs</span>.<span class="ident">skip_deserializing</span>() <span class="op">&&</span> <span class="ident">field</span>.<span class="ident">attrs</span>.<span class="ident">default</span>().<span class="ident">is_none</span>(), |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">check_from_and_try_from</span>(<span class="ident">cx</span>: <span class="kw-2">&</span><span class="ident">Ctxt</span>, <span class="ident">cont</span>: <span class="kw-2">&mut</span> <span class="ident">Container</span>) { |
| <span class="kw">if</span> <span class="ident">cont</span>.<span class="ident">attrs</span>.<span class="ident">type_from</span>().<span class="ident">is_some</span>() <span class="op">&&</span> <span class="ident">cont</span>.<span class="ident">attrs</span>.<span class="ident">type_try_from</span>().<span class="ident">is_some</span>() { |
| <span class="ident">cx</span>.<span class="ident">error_spanned_by</span>( |
| <span class="ident">cont</span>.<span class="ident">original</span>, |
| <span class="string">"#[serde(from = \"...\")] and #[serde(try_from = \"...\")] conflict with each other"</span>, |
| ); |
| } |
| } |
| </code></pre></div> |
| </section><section id="search" class="content hidden"></section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="serde_derive" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.60.0-nightly (1bd4fdc94 2022-01-12)" ></div> |
| </body></html> |