<!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 `/Users/m018/.cargo/registry/src/github.com-1ecc6299db9ec823/chrono-0.4.31/src/naive/time/mod.rs`."><title>mod.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../../../static.files/rustdoc-c4dbdcde0fbd8430.css" id="mainThemeStyle"><link rel="stylesheet" id="themeStyle" href="../../../../static.files/light-db279b6232be9c13.css"><link rel="stylesheet" disabled href="../../../../static.files/dark-cf923f49f397b216.css"><link rel="stylesheet" disabled href="../../../../static.files/ayu-be46fdc453a55015.css"><script src="../../../../static.files/storage-3891ce972e3a2bf8.js"></script><script defer src="../../../../static.files/source-script-1b95b7cca98b26e5.js"></script><script defer src="../../../../source-files.js"></script><script defer src="../../../../static.files/main-98a684e84ae5b08b.js"></script><noscript><link rel="stylesheet" href="../../../../static.files/noscript-13285aec31fa243e.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../../../static.files/favicon-2c020d218678b618.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"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../../../chrono/index.html"><img class="rust-logo" src="../../../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" 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="../../../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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<a href="#922" id="922">922</a>
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<a href="#934" id="934">934</a>
<a href="#935" id="935">935</a>
<a href="#936" id="936">936</a>
<a href="#937" id="937">937</a>
<a href="#938" id="938">938</a>
<a href="#939" id="939">939</a>
<a href="#940" id="940">940</a>
<a href="#941" id="941">941</a>
<a href="#942" id="942">942</a>
<a href="#943" id="943">943</a>
<a href="#944" id="944">944</a>
<a href="#945" id="945">945</a>
<a href="#946" id="946">946</a>
<a href="#947" id="947">947</a>
<a href="#948" id="948">948</a>
<a href="#949" id="949">949</a>
<a href="#950" id="950">950</a>
<a href="#951" id="951">951</a>
<a href="#952" id="952">952</a>
<a href="#953" id="953">953</a>
<a href="#954" id="954">954</a>
<a href="#955" id="955">955</a>
<a href="#956" id="956">956</a>
<a href="#957" id="957">957</a>
<a href="#958" id="958">958</a>
<a href="#959" id="959">959</a>
<a href="#960" id="960">960</a>
<a href="#961" id="961">961</a>
<a href="#962" id="962">962</a>
<a href="#963" id="963">963</a>
<a href="#964" id="964">964</a>
<a href="#965" id="965">965</a>
<a href="#966" id="966">966</a>
<a href="#967" id="967">967</a>
<a href="#968" id="968">968</a>
<a href="#969" id="969">969</a>
<a href="#970" id="970">970</a>
<a href="#971" id="971">971</a>
<a href="#972" id="972">972</a>
<a href="#973" id="973">973</a>
<a href="#974" id="974">974</a>
<a href="#975" id="975">975</a>
<a href="#976" id="976">976</a>
<a href="#977" id="977">977</a>
<a href="#978" id="978">978</a>
<a href="#979" id="979">979</a>
<a href="#980" id="980">980</a>
<a href="#981" id="981">981</a>
<a href="#982" id="982">982</a>
<a href="#983" id="983">983</a>
<a href="#984" id="984">984</a>
<a href="#985" id="985">985</a>
<a href="#986" id="986">986</a>
<a href="#987" id="987">987</a>
<a href="#988" id="988">988</a>
<a href="#989" id="989">989</a>
<a href="#990" id="990">990</a>
<a href="#991" id="991">991</a>
<a href="#992" id="992">992</a>
<a href="#993" id="993">993</a>
<a href="#994" id="994">994</a>
<a href="#995" id="995">995</a>
<a href="#996" id="996">996</a>
<a href="#997" id="997">997</a>
<a href="#998" id="998">998</a>
<a href="#999" id="999">999</a>
<a href="#1000" id="1000">1000</a>
<a href="#1001" id="1001">1001</a>
<a href="#1002" id="1002">1002</a>
<a href="#1003" id="1003">1003</a>
<a href="#1004" id="1004">1004</a>
<a href="#1005" id="1005">1005</a>
<a href="#1006" id="1006">1006</a>
<a href="#1007" id="1007">1007</a>
<a href="#1008" id="1008">1008</a>
<a href="#1009" id="1009">1009</a>
<a href="#1010" id="1010">1010</a>
<a href="#1011" id="1011">1011</a>
<a href="#1012" id="1012">1012</a>
<a href="#1013" id="1013">1013</a>
<a href="#1014" id="1014">1014</a>
<a href="#1015" id="1015">1015</a>
<a href="#1016" id="1016">1016</a>
<a href="#1017" id="1017">1017</a>
<a href="#1018" id="1018">1018</a>
<a href="#1019" id="1019">1019</a>
<a href="#1020" id="1020">1020</a>
<a href="#1021" id="1021">1021</a>
<a href="#1022" id="1022">1022</a>
<a href="#1023" id="1023">1023</a>
<a href="#1024" id="1024">1024</a>
<a href="#1025" id="1025">1025</a>
<a href="#1026" id="1026">1026</a>
<a href="#1027" id="1027">1027</a>
<a href="#1028" id="1028">1028</a>
<a href="#1029" id="1029">1029</a>
<a href="#1030" id="1030">1030</a>
<a href="#1031" id="1031">1031</a>
<a href="#1032" id="1032">1032</a>
<a href="#1033" id="1033">1033</a>
<a href="#1034" id="1034">1034</a>
<a href="#1035" id="1035">1035</a>
<a href="#1036" id="1036">1036</a>
<a href="#1037" id="1037">1037</a>
<a href="#1038" id="1038">1038</a>
<a href="#1039" id="1039">1039</a>
<a href="#1040" id="1040">1040</a>
<a href="#1041" id="1041">1041</a>
<a href="#1042" id="1042">1042</a>
<a href="#1043" id="1043">1043</a>
<a href="#1044" id="1044">1044</a>
<a href="#1045" id="1045">1045</a>
<a href="#1046" id="1046">1046</a>
<a href="#1047" id="1047">1047</a>
<a href="#1048" id="1048">1048</a>
<a href="#1049" id="1049">1049</a>
<a href="#1050" id="1050">1050</a>
<a href="#1051" id="1051">1051</a>
<a href="#1052" id="1052">1052</a>
<a href="#1053" id="1053">1053</a>
<a href="#1054" id="1054">1054</a>
<a href="#1055" id="1055">1055</a>
<a href="#1056" id="1056">1056</a>
<a href="#1057" id="1057">1057</a>
<a href="#1058" id="1058">1058</a>
<a href="#1059" id="1059">1059</a>
<a href="#1060" id="1060">1060</a>
<a href="#1061" id="1061">1061</a>
<a href="#1062" id="1062">1062</a>
<a href="#1063" id="1063">1063</a>
<a href="#1064" id="1064">1064</a>
<a href="#1065" id="1065">1065</a>
<a href="#1066" id="1066">1066</a>
<a href="#1067" id="1067">1067</a>
<a href="#1068" id="1068">1068</a>
<a href="#1069" id="1069">1069</a>
<a href="#1070" id="1070">1070</a>
<a href="#1071" id="1071">1071</a>
<a href="#1072" id="1072">1072</a>
<a href="#1073" id="1073">1073</a>
<a href="#1074" id="1074">1074</a>
<a href="#1075" id="1075">1075</a>
<a href="#1076" id="1076">1076</a>
<a href="#1077" id="1077">1077</a>
<a href="#1078" id="1078">1078</a>
<a href="#1079" id="1079">1079</a>
<a href="#1080" id="1080">1080</a>
<a href="#1081" id="1081">1081</a>
<a href="#1082" id="1082">1082</a>
<a href="#1083" id="1083">1083</a>
<a href="#1084" id="1084">1084</a>
<a href="#1085" id="1085">1085</a>
<a href="#1086" id="1086">1086</a>
<a href="#1087" id="1087">1087</a>
<a href="#1088" id="1088">1088</a>
<a href="#1089" id="1089">1089</a>
<a href="#1090" id="1090">1090</a>
<a href="#1091" id="1091">1091</a>
<a href="#1092" id="1092">1092</a>
<a href="#1093" id="1093">1093</a>
<a href="#1094" id="1094">1094</a>
<a href="#1095" id="1095">1095</a>
<a href="#1096" id="1096">1096</a>
<a href="#1097" id="1097">1097</a>
<a href="#1098" id="1098">1098</a>
<a href="#1099" id="1099">1099</a>
<a href="#1100" id="1100">1100</a>
<a href="#1101" id="1101">1101</a>
<a href="#1102" id="1102">1102</a>
<a href="#1103" id="1103">1103</a>
<a href="#1104" id="1104">1104</a>
<a href="#1105" id="1105">1105</a>
<a href="#1106" id="1106">1106</a>
<a href="#1107" id="1107">1107</a>
<a href="#1108" id="1108">1108</a>
<a href="#1109" id="1109">1109</a>
<a href="#1110" id="1110">1110</a>
<a href="#1111" id="1111">1111</a>
<a href="#1112" id="1112">1112</a>
<a href="#1113" id="1113">1113</a>
<a href="#1114" id="1114">1114</a>
<a href="#1115" id="1115">1115</a>
<a href="#1116" id="1116">1116</a>
<a href="#1117" id="1117">1117</a>
<a href="#1118" id="1118">1118</a>
<a href="#1119" id="1119">1119</a>
<a href="#1120" id="1120">1120</a>
<a href="#1121" id="1121">1121</a>
<a href="#1122" id="1122">1122</a>
<a href="#1123" id="1123">1123</a>
<a href="#1124" id="1124">1124</a>
<a href="#1125" id="1125">1125</a>
<a href="#1126" id="1126">1126</a>
<a href="#1127" id="1127">1127</a>
<a href="#1128" id="1128">1128</a>
<a href="#1129" id="1129">1129</a>
<a href="#1130" id="1130">1130</a>
<a href="#1131" id="1131">1131</a>
<a href="#1132" id="1132">1132</a>
<a href="#1133" id="1133">1133</a>
<a href="#1134" id="1134">1134</a>
<a href="#1135" id="1135">1135</a>
<a href="#1136" id="1136">1136</a>
<a href="#1137" id="1137">1137</a>
<a href="#1138" id="1138">1138</a>
<a href="#1139" id="1139">1139</a>
<a href="#1140" id="1140">1140</a>
<a href="#1141" id="1141">1141</a>
<a href="#1142" id="1142">1142</a>
<a href="#1143" id="1143">1143</a>
<a href="#1144" id="1144">1144</a>
<a href="#1145" id="1145">1145</a>
<a href="#1146" id="1146">1146</a>
<a href="#1147" id="1147">1147</a>
<a href="#1148" id="1148">1148</a>
<a href="#1149" id="1149">1149</a>
<a href="#1150" id="1150">1150</a>
<a href="#1151" id="1151">1151</a>
<a href="#1152" id="1152">1152</a>
<a href="#1153" id="1153">1153</a>
<a href="#1154" id="1154">1154</a>
<a href="#1155" id="1155">1155</a>
<a href="#1156" id="1156">1156</a>
<a href="#1157" id="1157">1157</a>
<a href="#1158" id="1158">1158</a>
<a href="#1159" id="1159">1159</a>
<a href="#1160" id="1160">1160</a>
<a href="#1161" id="1161">1161</a>
<a href="#1162" id="1162">1162</a>
<a href="#1163" id="1163">1163</a>
<a href="#1164" id="1164">1164</a>
<a href="#1165" id="1165">1165</a>
<a href="#1166" id="1166">1166</a>
<a href="#1167" id="1167">1167</a>
<a href="#1168" id="1168">1168</a>
<a href="#1169" id="1169">1169</a>
<a href="#1170" id="1170">1170</a>
<a href="#1171" id="1171">1171</a>
<a href="#1172" id="1172">1172</a>
<a href="#1173" id="1173">1173</a>
<a href="#1174" id="1174">1174</a>
<a href="#1175" id="1175">1175</a>
<a href="#1176" id="1176">1176</a>
<a href="#1177" id="1177">1177</a>
<a href="#1178" id="1178">1178</a>
<a href="#1179" id="1179">1179</a>
<a href="#1180" id="1180">1180</a>
<a href="#1181" id="1181">1181</a>
<a href="#1182" id="1182">1182</a>
<a href="#1183" id="1183">1183</a>
<a href="#1184" id="1184">1184</a>
<a href="#1185" id="1185">1185</a>
<a href="#1186" id="1186">1186</a>
<a href="#1187" id="1187">1187</a>
<a href="#1188" id="1188">1188</a>
<a href="#1189" id="1189">1189</a>
<a href="#1190" id="1190">1190</a>
<a href="#1191" id="1191">1191</a>
<a href="#1192" id="1192">1192</a>
<a href="#1193" id="1193">1193</a>
<a href="#1194" id="1194">1194</a>
<a href="#1195" id="1195">1195</a>
<a href="#1196" id="1196">1196</a>
<a href="#1197" id="1197">1197</a>
<a href="#1198" id="1198">1198</a>
<a href="#1199" id="1199">1199</a>
<a href="#1200" id="1200">1200</a>
<a href="#1201" id="1201">1201</a>
<a href="#1202" id="1202">1202</a>
<a href="#1203" id="1203">1203</a>
<a href="#1204" id="1204">1204</a>
<a href="#1205" id="1205">1205</a>
<a href="#1206" id="1206">1206</a>
<a href="#1207" id="1207">1207</a>
<a href="#1208" id="1208">1208</a>
<a href="#1209" id="1209">1209</a>
<a href="#1210" id="1210">1210</a>
<a href="#1211" id="1211">1211</a>
<a href="#1212" id="1212">1212</a>
<a href="#1213" id="1213">1213</a>
<a href="#1214" id="1214">1214</a>
<a href="#1215" id="1215">1215</a>
<a href="#1216" id="1216">1216</a>
<a href="#1217" id="1217">1217</a>
<a href="#1218" id="1218">1218</a>
<a href="#1219" id="1219">1219</a>
<a href="#1220" id="1220">1220</a>
<a href="#1221" id="1221">1221</a>
<a href="#1222" id="1222">1222</a>
<a href="#1223" id="1223">1223</a>
<a href="#1224" id="1224">1224</a>
<a href="#1225" id="1225">1225</a>
<a href="#1226" id="1226">1226</a>
<a href="#1227" id="1227">1227</a>
<a href="#1228" id="1228">1228</a>
<a href="#1229" id="1229">1229</a>
<a href="#1230" id="1230">1230</a>
<a href="#1231" id="1231">1231</a>
<a href="#1232" id="1232">1232</a>
<a href="#1233" id="1233">1233</a>
<a href="#1234" id="1234">1234</a>
<a href="#1235" id="1235">1235</a>
<a href="#1236" id="1236">1236</a>
<a href="#1237" id="1237">1237</a>
<a href="#1238" id="1238">1238</a>
<a href="#1239" id="1239">1239</a>
<a href="#1240" id="1240">1240</a>
<a href="#1241" id="1241">1241</a>
<a href="#1242" id="1242">1242</a>
<a href="#1243" id="1243">1243</a>
<a href="#1244" id="1244">1244</a>
<a href="#1245" id="1245">1245</a>
<a href="#1246" id="1246">1246</a>
<a href="#1247" id="1247">1247</a>
<a href="#1248" id="1248">1248</a>
<a href="#1249" id="1249">1249</a>
<a href="#1250" id="1250">1250</a>
<a href="#1251" id="1251">1251</a>
<a href="#1252" id="1252">1252</a>
<a href="#1253" id="1253">1253</a>
<a href="#1254" id="1254">1254</a>
<a href="#1255" id="1255">1255</a>
<a href="#1256" id="1256">1256</a>
<a href="#1257" id="1257">1257</a>
<a href="#1258" id="1258">1258</a>
<a href="#1259" id="1259">1259</a>
<a href="#1260" id="1260">1260</a>
<a href="#1261" id="1261">1261</a>
<a href="#1262" id="1262">1262</a>
<a href="#1263" id="1263">1263</a>
<a href="#1264" id="1264">1264</a>
<a href="#1265" id="1265">1265</a>
<a href="#1266" id="1266">1266</a>
<a href="#1267" id="1267">1267</a>
<a href="#1268" id="1268">1268</a>
<a href="#1269" id="1269">1269</a>
<a href="#1270" id="1270">1270</a>
<a href="#1271" id="1271">1271</a>
<a href="#1272" id="1272">1272</a>
<a href="#1273" id="1273">1273</a>
<a href="#1274" id="1274">1274</a>
<a href="#1275" id="1275">1275</a>
<a href="#1276" id="1276">1276</a>
<a href="#1277" id="1277">1277</a>
<a href="#1278" id="1278">1278</a>
<a href="#1279" id="1279">1279</a>
<a href="#1280" id="1280">1280</a>
<a href="#1281" id="1281">1281</a>
<a href="#1282" id="1282">1282</a>
<a href="#1283" id="1283">1283</a>
<a href="#1284" id="1284">1284</a>
<a href="#1285" id="1285">1285</a>
<a href="#1286" id="1286">1286</a>
<a href="#1287" id="1287">1287</a>
<a href="#1288" id="1288">1288</a>
<a href="#1289" id="1289">1289</a>
<a href="#1290" id="1290">1290</a>
<a href="#1291" id="1291">1291</a>
<a href="#1292" id="1292">1292</a>
<a href="#1293" id="1293">1293</a>
<a href="#1294" id="1294">1294</a>
<a href="#1295" id="1295">1295</a>
<a href="#1296" id="1296">1296</a>
<a href="#1297" id="1297">1297</a>
<a href="#1298" id="1298">1298</a>
<a href="#1299" id="1299">1299</a>
<a href="#1300" id="1300">1300</a>
<a href="#1301" id="1301">1301</a>
<a href="#1302" id="1302">1302</a>
<a href="#1303" id="1303">1303</a>
<a href="#1304" id="1304">1304</a>
<a href="#1305" id="1305">1305</a>
<a href="#1306" id="1306">1306</a>
<a href="#1307" id="1307">1307</a>
<a href="#1308" id="1308">1308</a>
<a href="#1309" id="1309">1309</a>
<a href="#1310" id="1310">1310</a>
<a href="#1311" id="1311">1311</a>
<a href="#1312" id="1312">1312</a>
<a href="#1313" id="1313">1313</a>
<a href="#1314" id="1314">1314</a>
<a href="#1315" id="1315">1315</a>
<a href="#1316" id="1316">1316</a>
<a href="#1317" id="1317">1317</a>
<a href="#1318" id="1318">1318</a>
<a href="#1319" id="1319">1319</a>
<a href="#1320" id="1320">1320</a>
<a href="#1321" id="1321">1321</a>
<a href="#1322" id="1322">1322</a>
<a href="#1323" id="1323">1323</a>
<a href="#1324" id="1324">1324</a>
<a href="#1325" id="1325">1325</a>
<a href="#1326" id="1326">1326</a>
<a href="#1327" id="1327">1327</a>
<a href="#1328" id="1328">1328</a>
<a href="#1329" id="1329">1329</a>
<a href="#1330" id="1330">1330</a>
<a href="#1331" id="1331">1331</a>
<a href="#1332" id="1332">1332</a>
<a href="#1333" id="1333">1333</a>
<a href="#1334" id="1334">1334</a>
<a href="#1335" id="1335">1335</a>
<a href="#1336" id="1336">1336</a>
<a href="#1337" id="1337">1337</a>
<a href="#1338" id="1338">1338</a>
<a href="#1339" id="1339">1339</a>
<a href="#1340" id="1340">1340</a>
<a href="#1341" id="1341">1341</a>
<a href="#1342" id="1342">1342</a>
<a href="#1343" id="1343">1343</a>
<a href="#1344" id="1344">1344</a>
<a href="#1345" id="1345">1345</a>
<a href="#1346" id="1346">1346</a>
<a href="#1347" id="1347">1347</a>
<a href="#1348" id="1348">1348</a>
<a href="#1349" id="1349">1349</a>
<a href="#1350" id="1350">1350</a>
<a href="#1351" id="1351">1351</a>
<a href="#1352" id="1352">1352</a>
<a href="#1353" id="1353">1353</a>
<a href="#1354" id="1354">1354</a>
<a href="#1355" id="1355">1355</a>
<a href="#1356" id="1356">1356</a>
<a href="#1357" id="1357">1357</a>
<a href="#1358" id="1358">1358</a>
<a href="#1359" id="1359">1359</a>
<a href="#1360" id="1360">1360</a>
<a href="#1361" id="1361">1361</a>
<a href="#1362" id="1362">1362</a>
<a href="#1363" id="1363">1363</a>
<a href="#1364" id="1364">1364</a>
<a href="#1365" id="1365">1365</a>
<a href="#1366" id="1366">1366</a>
<a href="#1367" id="1367">1367</a>
<a href="#1368" id="1368">1368</a>
<a href="#1369" id="1369">1369</a>
<a href="#1370" id="1370">1370</a>
<a href="#1371" id="1371">1371</a>
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</pre><pre class="rust"><code><span class="comment">// This is a part of Chrono.
// See README.md and LICENSE.txt for details.
</span><span class="doccomment">//! ISO 8601 time without timezone.
</span><span class="attr">#[cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>))]
</span><span class="kw">use </span>core::borrow::Borrow;
<span class="kw">use </span>core::ops::{Add, AddAssign, Sub, SubAssign};
<span class="kw">use </span>core::time::Duration;
<span class="kw">use </span>core::{fmt, str};
<span class="attr">#[cfg(feature = <span class="string">"rkyv"</span>)]
</span><span class="kw">use </span>rkyv::{Archive, Deserialize, Serialize};
<span class="kw">use </span><span class="kw">crate</span>::duration::Duration <span class="kw">as </span>OldDuration;
<span class="attr">#[cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>))]
</span><span class="kw">use </span><span class="kw">crate</span>::format::DelayedFormat;
<span class="kw">use </span><span class="kw">crate</span>::format::{
parse, parse_and_remainder, write_hundreds, Fixed, Item, Numeric, Pad, ParseError, ParseResult,
Parsed, StrftimeItems,
};
<span class="kw">use </span><span class="kw">crate</span>::Timelike;
<span class="kw">use crate</span>::{expect, try_opt};
<span class="attr">#[cfg(feature = <span class="string">"rustc-serialize"</span>)]
</span><span class="kw">mod </span>rustc_serialize;
<span class="attr">#[cfg(feature = <span class="string">"serde"</span>)]
</span><span class="kw">mod </span>serde;
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests;
<span class="doccomment">/// ISO 8601 time without timezone.
/// Allows for the nanosecond precision and optional leap second representation.
///
/// # Leap Second Handling
///
/// Since 1960s, the manmade atomic clock has been so accurate that
/// it is much more accurate than Earth's own motion.
/// It became desirable to define the civil time in terms of the atomic clock,
/// but that risks the desynchronization of the civil time from Earth.
/// To account for this, the designers of the Coordinated Universal Time (UTC)
/// made that the UTC should be kept within 0.9 seconds of the observed Earth-bound time.
/// When the mean solar day is longer than the ideal (86,400 seconds),
/// the error slowly accumulates and it is necessary to add a **leap second**
/// to slow the UTC down a bit.
/// (We may also remove a second to speed the UTC up a bit, but it never happened.)
/// The leap second, if any, follows 23:59:59 of June 30 or December 31 in the UTC.
///
/// Fast forward to the 21st century,
/// we have seen 26 leap seconds from January 1972 to December 2015.
/// Yes, 26 seconds. Probably you can read this paragraph within 26 seconds.
/// But those 26 seconds, and possibly more in the future, are never predictable,
/// and whether to add a leap second or not is known only before 6 months.
/// Internet-based clocks (via NTP) do account for known leap seconds,
/// but the system API normally doesn't (and often can't, with no network connection)
/// and there is no reliable way to retrieve leap second information.
///
/// Chrono does not try to accurately implement leap seconds; it is impossible.
/// Rather, **it allows for leap seconds but behaves as if there are *no other* leap seconds.**
/// Various operations will ignore any possible leap second(s)
/// except when any of the operands were actually leap seconds.
///
/// If you cannot tolerate this behavior,
/// you must use a separate `TimeZone` for the International Atomic Time (TAI).
/// TAI is like UTC but has no leap seconds, and thus slightly differs from UTC.
/// Chrono does not yet provide such implementation, but it is planned.
///
/// ## Representing Leap Seconds
///
/// The leap second is indicated via fractional seconds more than 1 second.
/// This makes possible to treat a leap second as the prior non-leap second
/// if you don't care about sub-second accuracy.
/// You should use the proper formatting to get the raw leap second.
///
/// All methods accepting fractional seconds will accept such values.
///
/// ```
/// use chrono::{NaiveDate, NaiveTime, Utc};
///
/// let t = NaiveTime::from_hms_milli_opt(8, 59, 59, 1_000).unwrap();
///
/// let dt1 = NaiveDate::from_ymd_opt(2015, 7, 1).unwrap().and_hms_micro_opt(8, 59, 59, 1_000_000).unwrap();
///
/// let dt2 = NaiveDate::from_ymd_opt(2015, 6, 30).unwrap().and_hms_nano_opt(23, 59, 59, 1_000_000_000).unwrap().and_local_timezone(Utc).unwrap();
/// # let _ = (t, dt1, dt2);
/// ```
///
/// Note that the leap second can happen anytime given an appropriate time zone;
/// 2015-07-01 01:23:60 would be a proper leap second if UTC+01:24 had existed.
/// Practically speaking, though, by the time of the first leap second on 1972-06-30,
/// every time zone offset around the world has standardized to the 5-minute alignment.
///
/// ## Date And Time Arithmetics
///
/// As a concrete example, let's assume that `03:00:60` and `04:00:60` are leap seconds.
/// In reality, of course, leap seconds are separated by at least 6 months.
/// We will also use some intuitive concise notations for the explanation.
///
/// `Time + Duration`
/// (short for [`NaiveTime::overflowing_add_signed`](#method.overflowing_add_signed)):
///
/// - `03:00:00 + 1s = 03:00:01`.
/// - `03:00:59 + 60s = 03:01:59`.
/// - `03:00:59 + 61s = 03:02:00`.
/// - `03:00:59 + 1s = 03:01:00`.
/// - `03:00:60 + 1s = 03:01:00`.
/// Note that the sum is identical to the previous.
/// - `03:00:60 + 60s = 03:01:59`.
/// - `03:00:60 + 61s = 03:02:00`.
/// - `03:00:60.1 + 0.8s = 03:00:60.9`.
///
/// `Time - Duration`
/// (short for [`NaiveTime::overflowing_sub_signed`](#method.overflowing_sub_signed)):
///
/// - `03:00:00 - 1s = 02:59:59`.
/// - `03:01:00 - 1s = 03:00:59`.
/// - `03:01:00 - 60s = 03:00:00`.
/// - `03:00:60 - 60s = 03:00:00`.
/// Note that the result is identical to the previous.
/// - `03:00:60.7 - 0.4s = 03:00:60.3`.
/// - `03:00:60.7 - 0.9s = 03:00:59.8`.
///
/// `Time - Time`
/// (short for [`NaiveTime::signed_duration_since`](#method.signed_duration_since)):
///
/// - `04:00:00 - 03:00:00 = 3600s`.
/// - `03:01:00 - 03:00:00 = 60s`.
/// - `03:00:60 - 03:00:00 = 60s`.
/// Note that the difference is identical to the previous.
/// - `03:00:60.6 - 03:00:59.4 = 1.2s`.
/// - `03:01:00 - 03:00:59.8 = 0.2s`.
/// - `03:01:00 - 03:00:60.5 = 0.5s`.
/// Note that the difference is larger than the previous,
/// even though the leap second clearly follows the previous whole second.
/// - `04:00:60.9 - 03:00:60.1 =
/// (04:00:60.9 - 04:00:00) + (04:00:00 - 03:01:00) + (03:01:00 - 03:00:60.1) =
/// 60.9s + 3540s + 0.9s = 3601.8s`.
///
/// In general,
///
/// - `Time + Duration` unconditionally equals to `Duration + Time`.
///
/// - `Time - Duration` unconditionally equals to `Time + (-Duration)`.
///
/// - `Time1 - Time2` unconditionally equals to `-(Time2 - Time1)`.
///
/// - Associativity does not generally hold, because
/// `(Time + Duration1) - Duration2` no longer equals to `Time + (Duration1 - Duration2)`
/// for two positive durations.
///
/// - As a special case, `(Time + Duration) - Duration` also does not equal to `Time`.
///
/// - If you can assume that all durations have the same sign, however,
/// then the associativity holds:
/// `(Time + Duration1) + Duration2` equals to `Time + (Duration1 + Duration2)`
/// for two positive durations.
///
/// ## Reading And Writing Leap Seconds
///
/// The "typical" leap seconds on the minute boundary are
/// correctly handled both in the formatting and parsing.
/// The leap second in the human-readable representation
/// will be represented as the second part being 60, as required by ISO 8601.
///
/// ```
/// use chrono::{Utc, NaiveDate};
///
/// let dt = NaiveDate::from_ymd_opt(2015, 6, 30).unwrap().and_hms_milli_opt(23, 59, 59, 1_000).unwrap().and_local_timezone(Utc).unwrap();
/// assert_eq!(format!("{:?}", dt), "2015-06-30T23:59:60Z");
/// ```
///
/// There are hypothetical leap seconds not on the minute boundary nevertheless supported by Chrono.
/// They are allowed for the sake of completeness and consistency; there were several "exotic" time
/// zone offsets with fractional minutes prior to UTC after all.
/// For such cases the human-readable representation is ambiguous and would be read back to the next
/// non-leap second.
///
/// A `NaiveTime` with a leap second that is not on a minute boundary can only be created from a
/// [`DateTime`](crate::DateTime) with fractional minutes as offset, or using
/// [`Timelike::with_nanosecond()`].
///
/// ```
/// use chrono::{FixedOffset, NaiveDate, TimeZone};
///
/// let paramaribo_pre1945 = FixedOffset::east_opt(-13236).unwrap(); // -03:40:36
/// let leap_sec_2015 =
/// NaiveDate::from_ymd_opt(2015, 6, 30).unwrap().and_hms_milli_opt(23, 59, 59, 1_000).unwrap();
/// let dt1 = paramaribo_pre1945.from_utc_datetime(&leap_sec_2015);
/// assert_eq!(format!("{:?}", dt1), "2015-06-30T20:19:24-03:40:36");
/// assert_eq!(format!("{:?}", dt1.time()), "20:19:24");
///
/// let next_sec = NaiveDate::from_ymd_opt(2015, 7, 1).unwrap().and_hms_opt(0, 0, 0).unwrap();
/// let dt2 = paramaribo_pre1945.from_utc_datetime(&next_sec);
/// assert_eq!(format!("{:?}", dt2), "2015-06-30T20:19:24-03:40:36");
/// assert_eq!(format!("{:?}", dt2.time()), "20:19:24");
///
/// assert!(dt1.time() != dt2.time());
/// assert!(dt1.time().to_string() == dt2.time().to_string());
/// ```
///
/// Since Chrono alone cannot determine any existence of leap seconds,
/// **there is absolutely no guarantee that the leap second read has actually happened**.
</span><span class="attr">#[derive(PartialEq, Eq, Hash, PartialOrd, Ord, Copy, Clone)]
#[cfg_attr(feature = <span class="string">"rkyv"</span>, derive(Archive, Deserialize, Serialize))]
</span><span class="kw">pub struct </span>NaiveTime {
secs: u32,
frac: u32,
}
<span class="attr">#[cfg(feature = <span class="string">"arbitrary"</span>)]
</span><span class="kw">impl </span>arbitrary::Arbitrary<<span class="lifetime">'_</span>> <span class="kw">for </span>NaiveTime {
<span class="kw">fn </span>arbitrary(u: <span class="kw-2">&mut </span>arbitrary::Unstructured) -> arbitrary::Result<NaiveTime> {
<span class="kw">let </span>mins = u.int_in_range(<span class="number">0</span>..=<span class="number">1439</span>)<span class="question-mark">?</span>;
<span class="kw">let </span><span class="kw-2">mut </span>secs = u.int_in_range(<span class="number">0</span>..=<span class="number">60</span>)<span class="question-mark">?</span>;
<span class="kw">let </span><span class="kw-2">mut </span>nano = u.int_in_range(<span class="number">0</span>..=<span class="number">999_999_999</span>)<span class="question-mark">?</span>;
<span class="kw">if </span>secs == <span class="number">60 </span>{
secs = <span class="number">59</span>;
nano += <span class="number">1_000_000_000</span>;
}
<span class="kw">let </span>time = NaiveTime::from_num_seconds_from_midnight_opt(mins * <span class="number">60 </span>+ secs, nano)
.expect(<span class="string">"Could not generate a valid chrono::NaiveTime. It looks like implementation of Arbitrary for NaiveTime is erroneous."</span>);
<span class="prelude-val">Ok</span>(time)
}
}
<span class="kw">impl </span>NaiveTime {
<span class="doccomment">/// Makes a new `NaiveTime` from hour, minute and second.
///
/// No [leap second](#leap-second-handling) is allowed here;
/// use `NaiveTime::from_hms_*` methods with a subsecond parameter instead.
///
/// # Panics
///
/// Panics on invalid hour, minute and/or second.
</span><span class="attr">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `from_hms_opt()` instead"</span>)]
#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>from_hms(hour: u32, min: u32, sec: u32) -> NaiveTime {
<span class="macro">expect!</span>(NaiveTime::from_hms_opt(hour, min, sec), <span class="string">"invalid time"</span>)
}
<span class="doccomment">/// Makes a new `NaiveTime` from hour, minute and second.
///
/// The millisecond part is allowed to exceed 1,000,000,000 in order to represent a
/// [leap second](#leap-second-handling), but only when `sec == 59`.
///
/// # Errors
///
/// Returns `None` on invalid hour, minute and/or second.
///
/// # Example
///
/// ```
/// use chrono::NaiveTime;
///
/// let from_hms_opt = NaiveTime::from_hms_opt;
///
/// assert!(from_hms_opt(0, 0, 0).is_some());
/// assert!(from_hms_opt(23, 59, 59).is_some());
/// assert!(from_hms_opt(24, 0, 0).is_none());
/// assert!(from_hms_opt(23, 60, 0).is_none());
/// assert!(from_hms_opt(23, 59, 60).is_none());
/// ```
</span><span class="attr">#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>from_hms_opt(hour: u32, min: u32, sec: u32) -> <span class="prelude-ty">Option</span><NaiveTime> {
NaiveTime::from_hms_nano_opt(hour, min, sec, <span class="number">0</span>)
}
<span class="doccomment">/// Makes a new `NaiveTime` from hour, minute, second and millisecond.
///
/// The millisecond part can exceed 1,000
/// in order to represent the [leap second](#leap-second-handling).
///
/// # Panics
///
/// Panics on invalid hour, minute, second and/or millisecond.
</span><span class="attr">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `from_hms_milli_opt()` instead"</span>)]
#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>from_hms_milli(hour: u32, min: u32, sec: u32, milli: u32) -> NaiveTime {
<span class="macro">expect!</span>(NaiveTime::from_hms_milli_opt(hour, min, sec, milli), <span class="string">"invalid time"</span>)
}
<span class="doccomment">/// Makes a new `NaiveTime` from hour, minute, second and millisecond.
///
/// The millisecond part is allowed to exceed 1,000,000,000 in order to represent a
/// [leap second](#leap-second-handling), but only when `sec == 59`.
///
/// # Errors
///
/// Returns `None` on invalid hour, minute, second and/or millisecond.
///
/// # Example
///
/// ```
/// use chrono::NaiveTime;
///
/// let from_hmsm_opt = NaiveTime::from_hms_milli_opt;
///
/// assert!(from_hmsm_opt(0, 0, 0, 0).is_some());
/// assert!(from_hmsm_opt(23, 59, 59, 999).is_some());
/// assert!(from_hmsm_opt(23, 59, 59, 1_999).is_some()); // a leap second after 23:59:59
/// assert!(from_hmsm_opt(24, 0, 0, 0).is_none());
/// assert!(from_hmsm_opt(23, 60, 0, 0).is_none());
/// assert!(from_hmsm_opt(23, 59, 60, 0).is_none());
/// assert!(from_hmsm_opt(23, 59, 59, 2_000).is_none());
/// ```
</span><span class="attr">#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>from_hms_milli_opt(
hour: u32,
min: u32,
sec: u32,
milli: u32,
) -> <span class="prelude-ty">Option</span><NaiveTime> {
<span class="kw">let </span>nano = <span class="macro">try_opt!</span>(milli.checked_mul(<span class="number">1_000_000</span>));
NaiveTime::from_hms_nano_opt(hour, min, sec, nano)
}
<span class="doccomment">/// Makes a new `NaiveTime` from hour, minute, second and microsecond.
///
/// The microsecond part is allowed to exceed 1,000,000,000 in order to represent a
/// [leap second](#leap-second-handling), but only when `sec == 59`.
///
/// # Panics
///
/// Panics on invalid hour, minute, second and/or microsecond.
</span><span class="attr">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `from_hms_micro_opt()` instead"</span>)]
#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>from_hms_micro(hour: u32, min: u32, sec: u32, micro: u32) -> NaiveTime {
<span class="macro">expect!</span>(NaiveTime::from_hms_micro_opt(hour, min, sec, micro), <span class="string">"invalid time"</span>)
}
<span class="doccomment">/// Makes a new `NaiveTime` from hour, minute, second and microsecond.
///
/// The microsecond part is allowed to exceed 1,000,000,000 in order to represent a
/// [leap second](#leap-second-handling), but only when `sec == 59`.
///
/// # Errors
///
/// Returns `None` on invalid hour, minute, second and/or microsecond.
///
/// # Example
///
/// ```
/// use chrono::NaiveTime;
///
/// let from_hmsu_opt = NaiveTime::from_hms_micro_opt;
///
/// assert!(from_hmsu_opt(0, 0, 0, 0).is_some());
/// assert!(from_hmsu_opt(23, 59, 59, 999_999).is_some());
/// assert!(from_hmsu_opt(23, 59, 59, 1_999_999).is_some()); // a leap second after 23:59:59
/// assert!(from_hmsu_opt(24, 0, 0, 0).is_none());
/// assert!(from_hmsu_opt(23, 60, 0, 0).is_none());
/// assert!(from_hmsu_opt(23, 59, 60, 0).is_none());
/// assert!(from_hmsu_opt(23, 59, 59, 2_000_000).is_none());
/// ```
</span><span class="attr">#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>from_hms_micro_opt(
hour: u32,
min: u32,
sec: u32,
micro: u32,
) -> <span class="prelude-ty">Option</span><NaiveTime> {
<span class="kw">let </span>nano = <span class="macro">try_opt!</span>(micro.checked_mul(<span class="number">1_000</span>));
NaiveTime::from_hms_nano_opt(hour, min, sec, nano)
}
<span class="doccomment">/// Makes a new `NaiveTime` from hour, minute, second and nanosecond.
///
/// The nanosecond part is allowed to exceed 1,000,000,000 in order to represent a
/// [leap second](#leap-second-handling), but only when `sec == 59`.
///
/// # Panics
///
/// Panics on invalid hour, minute, second and/or nanosecond.
</span><span class="attr">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `from_hms_nano_opt()` instead"</span>)]
#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>from_hms_nano(hour: u32, min: u32, sec: u32, nano: u32) -> NaiveTime {
<span class="macro">expect!</span>(NaiveTime::from_hms_nano_opt(hour, min, sec, nano), <span class="string">"invalid time"</span>)
}
<span class="doccomment">/// Makes a new `NaiveTime` from hour, minute, second and nanosecond.
///
/// The nanosecond part is allowed to exceed 1,000,000,000 in order to represent a
/// [leap second](#leap-second-handling), but only when `sec == 59`.
///
/// # Errors
///
/// Returns `None` on invalid hour, minute, second and/or nanosecond.
///
/// # Example
///
/// ```
/// use chrono::NaiveTime;
///
/// let from_hmsn_opt = NaiveTime::from_hms_nano_opt;
///
/// assert!(from_hmsn_opt(0, 0, 0, 0).is_some());
/// assert!(from_hmsn_opt(23, 59, 59, 999_999_999).is_some());
/// assert!(from_hmsn_opt(23, 59, 59, 1_999_999_999).is_some()); // a leap second after 23:59:59
/// assert!(from_hmsn_opt(24, 0, 0, 0).is_none());
/// assert!(from_hmsn_opt(23, 60, 0, 0).is_none());
/// assert!(from_hmsn_opt(23, 59, 60, 0).is_none());
/// assert!(from_hmsn_opt(23, 59, 59, 2_000_000_000).is_none());
/// ```
</span><span class="attr">#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>from_hms_nano_opt(hour: u32, min: u32, sec: u32, nano: u32) -> <span class="prelude-ty">Option</span><NaiveTime> {
<span class="kw">if </span>(hour >= <span class="number">24 </span>|| min >= <span class="number">60 </span>|| sec >= <span class="number">60</span>)
|| (nano >= <span class="number">1_000_000_000 </span>&& sec != <span class="number">59</span>)
|| nano >= <span class="number">2_000_000_000
</span>{
<span class="kw">return </span><span class="prelude-val">None</span>;
}
<span class="kw">let </span>secs = hour * <span class="number">3600 </span>+ min * <span class="number">60 </span>+ sec;
<span class="prelude-val">Some</span>(NaiveTime { secs, frac: nano })
}
<span class="doccomment">/// Makes a new `NaiveTime` from the number of seconds since midnight and nanosecond.
///
/// The nanosecond part is allowed to exceed 1,000,000,000 in order to represent a
/// [leap second](#leap-second-handling), but only when `secs % 60 == 59`.
///
/// # Panics
///
/// Panics on invalid number of seconds and/or nanosecond.
</span><span class="attr">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `from_num_seconds_from_midnight_opt()` instead"</span>)]
#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>from_num_seconds_from_midnight(secs: u32, nano: u32) -> NaiveTime {
<span class="macro">expect!</span>(NaiveTime::from_num_seconds_from_midnight_opt(secs, nano), <span class="string">"invalid time"</span>)
}
<span class="doccomment">/// Makes a new `NaiveTime` from the number of seconds since midnight and nanosecond.
///
/// The nanosecond part is allowed to exceed 1,000,000,000 in order to represent a
/// [leap second](#leap-second-handling), but only when `secs % 60 == 59`.
///
/// # Errors
///
/// Returns `None` on invalid number of seconds and/or nanosecond.
///
/// # Example
///
/// ```
/// use chrono::NaiveTime;
///
/// let from_nsecs_opt = NaiveTime::from_num_seconds_from_midnight_opt;
///
/// assert!(from_nsecs_opt(0, 0).is_some());
/// assert!(from_nsecs_opt(86399, 999_999_999).is_some());
/// assert!(from_nsecs_opt(86399, 1_999_999_999).is_some()); // a leap second after 23:59:59
/// assert!(from_nsecs_opt(86_400, 0).is_none());
/// assert!(from_nsecs_opt(86399, 2_000_000_000).is_none());
/// ```
</span><span class="attr">#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>from_num_seconds_from_midnight_opt(secs: u32, nano: u32) -> <span class="prelude-ty">Option</span><NaiveTime> {
<span class="kw">if </span>secs >= <span class="number">86_400 </span>|| nano >= <span class="number">2_000_000_000 </span>|| (nano >= <span class="number">1_000_000_000 </span>&& secs % <span class="number">60 </span>!= <span class="number">59</span>) {
<span class="kw">return </span><span class="prelude-val">None</span>;
}
<span class="prelude-val">Some</span>(NaiveTime { secs, frac: nano })
}
<span class="doccomment">/// Parses a string with the specified format string and returns a new `NaiveTime`.
/// See the [`format::strftime` module](../format/strftime/index.html)
/// on the supported escape sequences.
///
/// # Example
///
/// ```
/// use chrono::NaiveTime;
///
/// let parse_from_str = NaiveTime::parse_from_str;
///
/// assert_eq!(parse_from_str("23:56:04", "%H:%M:%S"),
/// Ok(NaiveTime::from_hms_opt(23, 56, 4).unwrap()));
/// assert_eq!(parse_from_str("pm012345.6789", "%p%I%M%S%.f"),
/// Ok(NaiveTime::from_hms_micro_opt(13, 23, 45, 678_900).unwrap()));
/// ```
///
/// Date and offset is ignored for the purpose of parsing.
///
/// ```
/// # use chrono::NaiveTime;
/// # let parse_from_str = NaiveTime::parse_from_str;
/// assert_eq!(parse_from_str("2014-5-17T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"),
/// Ok(NaiveTime::from_hms_opt(12, 34, 56).unwrap()));
/// ```
///
/// [Leap seconds](#leap-second-handling) are correctly handled by
/// treating any time of the form `hh:mm:60` as a leap second.
/// (This equally applies to the formatting, so the round trip is possible.)
///
/// ```
/// # use chrono::NaiveTime;
/// # let parse_from_str = NaiveTime::parse_from_str;
/// assert_eq!(parse_from_str("08:59:60.123", "%H:%M:%S%.f"),
/// Ok(NaiveTime::from_hms_milli_opt(8, 59, 59, 1_123).unwrap()));
/// ```
///
/// Missing seconds are assumed to be zero,
/// but out-of-bound times or insufficient fields are errors otherwise.
///
/// ```
/// # use chrono::NaiveTime;
/// # let parse_from_str = NaiveTime::parse_from_str;
/// assert_eq!(parse_from_str("7:15", "%H:%M"),
/// Ok(NaiveTime::from_hms_opt(7, 15, 0).unwrap()));
///
/// assert!(parse_from_str("04m33s", "%Mm%Ss").is_err());
/// assert!(parse_from_str("12", "%H").is_err());
/// assert!(parse_from_str("17:60", "%H:%M").is_err());
/// assert!(parse_from_str("24:00:00", "%H:%M:%S").is_err());
/// ```
///
/// All parsed fields should be consistent to each other, otherwise it's an error.
/// Here `%H` is for 24-hour clocks, unlike `%I`,
/// and thus can be independently determined without AM/PM.
///
/// ```
/// # use chrono::NaiveTime;
/// # let parse_from_str = NaiveTime::parse_from_str;
/// assert!(parse_from_str("13:07 AM", "%H:%M %p").is_err());
/// ```
</span><span class="kw">pub fn </span>parse_from_str(s: <span class="kw-2">&</span>str, fmt: <span class="kw-2">&</span>str) -> ParseResult<NaiveTime> {
<span class="kw">let </span><span class="kw-2">mut </span>parsed = Parsed::new();
parse(<span class="kw-2">&mut </span>parsed, s, StrftimeItems::new(fmt))<span class="question-mark">?</span>;
parsed.to_naive_time()
}
<span class="doccomment">/// Parses a string from a user-specified format into a new `NaiveTime` value, and a slice with
/// the remaining portion of the string.
/// See the [`format::strftime` module](../format/strftime/index.html)
/// on the supported escape sequences.
///
/// Similar to [`parse_from_str`](#method.parse_from_str).
///
/// # Example
///
/// ```rust
/// # use chrono::{NaiveTime};
/// let (time, remainder) = NaiveTime::parse_and_remainder(
/// "3h4m33s trailing text", "%-Hh%-Mm%-Ss").unwrap();
/// assert_eq!(time, NaiveTime::from_hms_opt(3, 4, 33).unwrap());
/// assert_eq!(remainder, " trailing text");
/// ```
</span><span class="kw">pub fn </span>parse_and_remainder<<span class="lifetime">'a</span>>(s: <span class="kw-2">&</span><span class="lifetime">'a </span>str, fmt: <span class="kw-2">&</span>str) -> ParseResult<(NaiveTime, <span class="kw-2">&</span><span class="lifetime">'a </span>str)> {
<span class="kw">let </span><span class="kw-2">mut </span>parsed = Parsed::new();
<span class="kw">let </span>remainder = parse_and_remainder(<span class="kw-2">&mut </span>parsed, s, StrftimeItems::new(fmt))<span class="question-mark">?</span>;
parsed.to_naive_time().map(|t| (t, remainder))
}
<span class="doccomment">/// Adds given `Duration` to the current time, and also returns the number of *seconds*
/// in the integral number of days ignored from the addition.
///
/// # Example
///
/// ```
/// use chrono::{Duration, NaiveTime};
///
/// let from_hms = |h, m, s| { NaiveTime::from_hms_opt(h, m, s).unwrap() };
///
/// assert_eq!(from_hms(3, 4, 5).overflowing_add_signed(Duration::hours(11)),
/// (from_hms(14, 4, 5), 0));
/// assert_eq!(from_hms(3, 4, 5).overflowing_add_signed(Duration::hours(23)),
/// (from_hms(2, 4, 5), 86_400));
/// assert_eq!(from_hms(3, 4, 5).overflowing_add_signed(Duration::hours(-7)),
/// (from_hms(20, 4, 5), -86_400));
/// ```
</span><span class="attr">#[must_use]
</span><span class="kw">pub fn </span>overflowing_add_signed(<span class="kw-2">&</span><span class="self">self</span>, <span class="kw-2">mut </span>rhs: OldDuration) -> (NaiveTime, i64) {
<span class="kw">let </span><span class="kw-2">mut </span>secs = <span class="self">self</span>.secs;
<span class="kw">let </span><span class="kw-2">mut </span>frac = <span class="self">self</span>.frac;
<span class="comment">// check if `self` is a leap second and adding `rhs` would escape that leap second.
// if it's the case, update `self` and `rhs` to involve no leap second;
// otherwise the addition immediately finishes.
</span><span class="kw">if </span>frac >= <span class="number">1_000_000_000 </span>{
<span class="kw">let </span>rfrac = <span class="number">2_000_000_000 </span>- frac;
<span class="kw">if </span>rhs >= OldDuration::nanoseconds(i64::from(rfrac)) {
rhs = rhs - OldDuration::nanoseconds(i64::from(rfrac));
secs += <span class="number">1</span>;
frac = <span class="number">0</span>;
} <span class="kw">else if </span>rhs < OldDuration::nanoseconds(-i64::from(frac)) {
rhs = rhs + OldDuration::nanoseconds(i64::from(frac));
frac = <span class="number">0</span>;
} <span class="kw">else </span>{
frac = (i64::from(frac) + rhs.num_nanoseconds().unwrap()) <span class="kw">as </span>u32;
<span class="macro">debug_assert!</span>(frac < <span class="number">2_000_000_000</span>);
<span class="kw">return </span>(NaiveTime { secs, frac }, <span class="number">0</span>);
}
}
<span class="macro">debug_assert!</span>(secs <= <span class="number">86_400</span>);
<span class="macro">debug_assert!</span>(frac < <span class="number">1_000_000_000</span>);
<span class="kw">let </span>rhssecs = rhs.num_seconds();
<span class="kw">let </span>rhsfrac = (rhs - OldDuration::seconds(rhssecs)).num_nanoseconds().unwrap();
<span class="macro">debug_assert_eq!</span>(OldDuration::seconds(rhssecs) + OldDuration::nanoseconds(rhsfrac), rhs);
<span class="kw">let </span>rhssecsinday = rhssecs % <span class="number">86_400</span>;
<span class="kw">let </span><span class="kw-2">mut </span>morerhssecs = rhssecs - rhssecsinday;
<span class="kw">let </span>rhssecs = rhssecsinday <span class="kw">as </span>i32;
<span class="kw">let </span>rhsfrac = rhsfrac <span class="kw">as </span>i32;
<span class="macro">debug_assert!</span>(-<span class="number">86_400 </span>< rhssecs && rhssecs < <span class="number">86_400</span>);
<span class="macro">debug_assert_eq!</span>(morerhssecs % <span class="number">86_400</span>, <span class="number">0</span>);
<span class="macro">debug_assert!</span>(-<span class="number">1_000_000_000 </span>< rhsfrac && rhsfrac < <span class="number">1_000_000_000</span>);
<span class="kw">let </span><span class="kw-2">mut </span>secs = secs <span class="kw">as </span>i32 + rhssecs;
<span class="kw">let </span><span class="kw-2">mut </span>frac = frac <span class="kw">as </span>i32 + rhsfrac;
<span class="macro">debug_assert!</span>(-<span class="number">86_400 </span>< secs && secs < <span class="number">2 </span>* <span class="number">86_400</span>);
<span class="macro">debug_assert!</span>(-<span class="number">1_000_000_000 </span>< frac && frac < <span class="number">2_000_000_000</span>);
<span class="kw">if </span>frac < <span class="number">0 </span>{
frac += <span class="number">1_000_000_000</span>;
secs -= <span class="number">1</span>;
} <span class="kw">else if </span>frac >= <span class="number">1_000_000_000 </span>{
frac -= <span class="number">1_000_000_000</span>;
secs += <span class="number">1</span>;
}
<span class="macro">debug_assert!</span>((-<span class="number">86_400</span>..<span class="number">2 </span>* <span class="number">86_400</span>).contains(<span class="kw-2">&</span>secs));
<span class="macro">debug_assert!</span>((<span class="number">0</span>..<span class="number">1_000_000_000</span>).contains(<span class="kw-2">&</span>frac));
<span class="kw">if </span>secs < <span class="number">0 </span>{
secs += <span class="number">86_400</span>;
morerhssecs -= <span class="number">86_400</span>;
} <span class="kw">else if </span>secs >= <span class="number">86_400 </span>{
secs -= <span class="number">86_400</span>;
morerhssecs += <span class="number">86_400</span>;
}
<span class="macro">debug_assert!</span>((<span class="number">0</span>..<span class="number">86_400</span>).contains(<span class="kw-2">&</span>secs));
(NaiveTime { secs: secs <span class="kw">as </span>u32, frac: frac <span class="kw">as </span>u32 }, morerhssecs)
}
<span class="doccomment">/// Subtracts given `Duration` from the current time, and also returns the number of *seconds*
/// in the integral number of days ignored from the subtraction.
///
/// # Example
///
/// ```
/// use chrono::{Duration, NaiveTime};
///
/// let from_hms = |h, m, s| { NaiveTime::from_hms_opt(h, m, s).unwrap() };
///
/// assert_eq!(from_hms(3, 4, 5).overflowing_sub_signed(Duration::hours(2)),
/// (from_hms(1, 4, 5), 0));
/// assert_eq!(from_hms(3, 4, 5).overflowing_sub_signed(Duration::hours(17)),
/// (from_hms(10, 4, 5), 86_400));
/// assert_eq!(from_hms(3, 4, 5).overflowing_sub_signed(Duration::hours(-22)),
/// (from_hms(1, 4, 5), -86_400));
/// ```
</span><span class="attr">#[inline]
#[must_use]
</span><span class="kw">pub fn </span>overflowing_sub_signed(<span class="kw-2">&</span><span class="self">self</span>, rhs: OldDuration) -> (NaiveTime, i64) {
<span class="kw">let </span>(time, rhs) = <span class="self">self</span>.overflowing_add_signed(-rhs);
(time, -rhs) <span class="comment">// safe to negate, rhs is within +/- (2^63 / 1000)
</span>}
<span class="doccomment">/// Subtracts another `NaiveTime` from the current time.
/// Returns a `Duration` within +/- 1 day.
/// This does not overflow or underflow at all.
///
/// As a part of Chrono's [leap second handling](#leap-second-handling),
/// the subtraction assumes that **there is no leap second ever**,
/// except when any of the `NaiveTime`s themselves represents a leap second
/// in which case the assumption becomes that
/// **there are exactly one (or two) leap second(s) ever**.
///
/// # Example
///
/// ```
/// use chrono::{Duration, NaiveTime};
///
/// let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };
/// let since = NaiveTime::signed_duration_since;
///
/// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(3, 5, 7, 900)),
/// Duration::zero());
/// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(3, 5, 7, 875)),
/// Duration::milliseconds(25));
/// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(3, 5, 6, 925)),
/// Duration::milliseconds(975));
/// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(3, 5, 0, 900)),
/// Duration::seconds(7));
/// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(3, 0, 7, 900)),
/// Duration::seconds(5 * 60));
/// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(0, 5, 7, 900)),
/// Duration::seconds(3 * 3600));
/// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(4, 5, 7, 900)),
/// Duration::seconds(-3600));
/// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(2, 4, 6, 800)),
/// Duration::seconds(3600 + 60 + 1) + Duration::milliseconds(100));
/// ```
///
/// Leap seconds are handled, but the subtraction assumes that
/// there were no other leap seconds happened.
///
/// ```
/// # use chrono::{Duration, NaiveTime};
/// # let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };
/// # let since = NaiveTime::signed_duration_since;
/// assert_eq!(since(from_hmsm(3, 0, 59, 1_000), from_hmsm(3, 0, 59, 0)),
/// Duration::seconds(1));
/// assert_eq!(since(from_hmsm(3, 0, 59, 1_500), from_hmsm(3, 0, 59, 0)),
/// Duration::milliseconds(1500));
/// assert_eq!(since(from_hmsm(3, 0, 59, 1_000), from_hmsm(3, 0, 0, 0)),
/// Duration::seconds(60));
/// assert_eq!(since(from_hmsm(3, 0, 0, 0), from_hmsm(2, 59, 59, 1_000)),
/// Duration::seconds(1));
/// assert_eq!(since(from_hmsm(3, 0, 59, 1_000), from_hmsm(2, 59, 59, 1_000)),
/// Duration::seconds(61));
/// ```
</span><span class="attr">#[must_use]
</span><span class="kw">pub fn </span>signed_duration_since(<span class="self">self</span>, rhs: NaiveTime) -> OldDuration {
<span class="comment">// | | :leap| | | | | | | :leap| |
// | | : | | | | | | | : | |
// ----+----+-----*---+----+----+----+----+----+----+-------*-+----+----
// | `rhs` | | `self`
// |======================================>| |
// | | `self.secs - rhs.secs` |`self.frac`
// |====>| | |======>|
// `rhs.frac`|========================================>|
// | | | `self - rhs` | |
</span><span class="kw">use </span>core::cmp::Ordering;
<span class="kw">let </span>secs = i64::from(<span class="self">self</span>.secs) - i64::from(rhs.secs);
<span class="kw">let </span>frac = i64::from(<span class="self">self</span>.frac) - i64::from(rhs.frac);
<span class="comment">// `secs` may contain a leap second yet to be counted
</span><span class="kw">let </span>adjust = <span class="kw">match </span><span class="self">self</span>.secs.cmp(<span class="kw-2">&</span>rhs.secs) {
Ordering::Greater => i64::from(rhs.frac >= <span class="number">1_000_000_000</span>),
Ordering::Equal => <span class="number">0</span>,
Ordering::Less => {
<span class="kw">if </span><span class="self">self</span>.frac >= <span class="number">1_000_000_000 </span>{
-<span class="number">1
</span>} <span class="kw">else </span>{
<span class="number">0
</span>}
}
};
OldDuration::seconds(secs + adjust) + OldDuration::nanoseconds(frac)
}
<span class="doccomment">/// Formats the time with the specified formatting items.
/// Otherwise it is the same as the ordinary [`format`](#method.format) method.
///
/// The `Iterator` of items should be `Clone`able,
/// since the resulting `DelayedFormat` value may be formatted multiple times.
///
/// # Example
///
/// ```
/// use chrono::NaiveTime;
/// use chrono::format::strftime::StrftimeItems;
///
/// let fmt = StrftimeItems::new("%H:%M:%S");
/// let t = NaiveTime::from_hms_opt(23, 56, 4).unwrap();
/// assert_eq!(t.format_with_items(fmt.clone()).to_string(), "23:56:04");
/// assert_eq!(t.format("%H:%M:%S").to_string(), "23:56:04");
/// ```
///
/// The resulting `DelayedFormat` can be formatted directly via the `Display` trait.
///
/// ```
/// # use chrono::NaiveTime;
/// # use chrono::format::strftime::StrftimeItems;
/// # let fmt = StrftimeItems::new("%H:%M:%S").clone();
/// # let t = NaiveTime::from_hms_opt(23, 56, 4).unwrap();
/// assert_eq!(format!("{}", t.format_with_items(fmt)), "23:56:04");
/// ```
</span><span class="attr">#[cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>))]
#[cfg_attr(docsrs, doc(cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>))))]
#[inline]
#[must_use]
</span><span class="kw">pub fn </span>format_with_items<<span class="lifetime">'a</span>, I, B>(<span class="kw-2">&</span><span class="self">self</span>, items: I) -> DelayedFormat<I>
<span class="kw">where
</span>I: Iterator<Item = B> + Clone,
B: Borrow<Item<<span class="lifetime">'a</span>>>,
{
DelayedFormat::new(<span class="prelude-val">None</span>, <span class="prelude-val">Some</span>(<span class="kw-2">*</span><span class="self">self</span>), items)
}
<span class="doccomment">/// Formats the time with the specified format string.
/// See the [`format::strftime` module](../format/strftime/index.html)
/// on the supported escape sequences.
///
/// This returns a `DelayedFormat`,
/// which gets converted to a string only when actual formatting happens.
/// You may use the `to_string` method to get a `String`,
/// or just feed it into `print!` and other formatting macros.
/// (In this way it avoids the redundant memory allocation.)
///
/// A wrong format string does *not* issue an error immediately.
/// Rather, converting or formatting the `DelayedFormat` fails.
/// You are recommended to immediately use `DelayedFormat` for this reason.
///
/// # Example
///
/// ```
/// use chrono::NaiveTime;
///
/// let t = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap();
/// assert_eq!(t.format("%H:%M:%S").to_string(), "23:56:04");
/// assert_eq!(t.format("%H:%M:%S%.6f").to_string(), "23:56:04.012345");
/// assert_eq!(t.format("%-I:%M %p").to_string(), "11:56 PM");
/// ```
///
/// The resulting `DelayedFormat` can be formatted directly via the `Display` trait.
///
/// ```
/// # use chrono::NaiveTime;
/// # let t = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap();
/// assert_eq!(format!("{}", t.format("%H:%M:%S")), "23:56:04");
/// assert_eq!(format!("{}", t.format("%H:%M:%S%.6f")), "23:56:04.012345");
/// assert_eq!(format!("{}", t.format("%-I:%M %p")), "11:56 PM");
/// ```
</span><span class="attr">#[cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>))]
#[cfg_attr(docsrs, doc(cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>))))]
#[inline]
#[must_use]
</span><span class="kw">pub fn </span>format<<span class="lifetime">'a</span>>(<span class="kw-2">&</span><span class="self">self</span>, fmt: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> DelayedFormat<StrftimeItems<<span class="lifetime">'a</span>>> {
<span class="self">self</span>.format_with_items(StrftimeItems::new(fmt))
}
<span class="doccomment">/// Returns a triple of the hour, minute and second numbers.
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>hms(<span class="kw-2">&</span><span class="self">self</span>) -> (u32, u32, u32) {
<span class="kw">let </span>sec = <span class="self">self</span>.secs % <span class="number">60</span>;
<span class="kw">let </span>mins = <span class="self">self</span>.secs / <span class="number">60</span>;
<span class="kw">let </span>min = mins % <span class="number">60</span>;
<span class="kw">let </span>hour = mins / <span class="number">60</span>;
(hour, min, sec)
}
<span class="doccomment">/// The earliest possible `NaiveTime`
</span><span class="kw">pub const </span>MIN: <span class="self">Self </span>= <span class="self">Self </span>{ secs: <span class="number">0</span>, frac: <span class="number">0 </span>};
<span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">const </span>MAX: <span class="self">Self </span>= <span class="self">Self </span>{ secs: <span class="number">23 </span>* <span class="number">3600 </span>+ <span class="number">59 </span>* <span class="number">60 </span>+ <span class="number">59</span>, frac: <span class="number">999_999_999 </span>};
}
<span class="kw">impl </span>Timelike <span class="kw">for </span>NaiveTime {
<span class="doccomment">/// Returns the hour number from 0 to 23.
///
/// # Example
///
/// ```
/// use chrono::{NaiveTime, Timelike};
///
/// assert_eq!(NaiveTime::from_hms_opt(0, 0, 0).unwrap().hour(), 0);
/// assert_eq!(NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap().hour(), 23);
/// ```
</span><span class="attr">#[inline]
</span><span class="kw">fn </span>hour(<span class="kw-2">&</span><span class="self">self</span>) -> u32 {
<span class="self">self</span>.hms().<span class="number">0
</span>}
<span class="doccomment">/// Returns the minute number from 0 to 59.
///
/// # Example
///
/// ```
/// use chrono::{NaiveTime, Timelike};
///
/// assert_eq!(NaiveTime::from_hms_opt(0, 0, 0).unwrap().minute(), 0);
/// assert_eq!(NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap().minute(), 56);
/// ```
</span><span class="attr">#[inline]
</span><span class="kw">fn </span>minute(<span class="kw-2">&</span><span class="self">self</span>) -> u32 {
<span class="self">self</span>.hms().<span class="number">1
</span>}
<span class="doccomment">/// Returns the second number from 0 to 59.
///
/// # Example
///
/// ```
/// use chrono::{NaiveTime, Timelike};
///
/// assert_eq!(NaiveTime::from_hms_opt(0, 0, 0).unwrap().second(), 0);
/// assert_eq!(NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap().second(), 4);
/// ```
///
/// This method never returns 60 even when it is a leap second.
/// ([Why?](#leap-second-handling))
/// Use the proper [formatting method](#method.format) to get a human-readable representation.
///
</span><span class="attr">#[cfg_attr(not(feature = <span class="string">"std"</span>), doc = <span class="string">"```ignore"</span>)]
#[cfg_attr(feature = <span class="string">"std"</span>, doc = <span class="string">"```"</span>)]
</span><span class="doccomment">/// # use chrono::{NaiveTime, Timelike};
/// let leap = NaiveTime::from_hms_milli_opt(23, 59, 59, 1_000).unwrap();
/// assert_eq!(leap.second(), 59);
/// assert_eq!(leap.format("%H:%M:%S").to_string(), "23:59:60");
/// ```
</span><span class="attr">#[inline]
</span><span class="kw">fn </span>second(<span class="kw-2">&</span><span class="self">self</span>) -> u32 {
<span class="self">self</span>.hms().<span class="number">2
</span>}
<span class="doccomment">/// Returns the number of nanoseconds since the whole non-leap second.
/// The range from 1,000,000,000 to 1,999,999,999 represents
/// the [leap second](#leap-second-handling).
///
/// # Example
///
/// ```
/// use chrono::{NaiveTime, Timelike};
///
/// assert_eq!(NaiveTime::from_hms_opt(0, 0, 0).unwrap().nanosecond(), 0);
/// assert_eq!(NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap().nanosecond(), 12_345_678);
/// ```
///
/// Leap seconds may have seemingly out-of-range return values.
/// You can reduce the range with `time.nanosecond() % 1_000_000_000`, or
/// use the proper [formatting method](#method.format) to get a human-readable representation.
///
</span><span class="attr">#[cfg_attr(not(feature = <span class="string">"std"</span>), doc = <span class="string">"```ignore"</span>)]
#[cfg_attr(feature = <span class="string">"std"</span>, doc = <span class="string">"```"</span>)]
</span><span class="doccomment">/// # use chrono::{NaiveTime, Timelike};
/// let leap = NaiveTime::from_hms_milli_opt(23, 59, 59, 1_000).unwrap();
/// assert_eq!(leap.nanosecond(), 1_000_000_000);
/// assert_eq!(leap.format("%H:%M:%S%.9f").to_string(), "23:59:60.000000000");
/// ```
</span><span class="attr">#[inline]
</span><span class="kw">fn </span>nanosecond(<span class="kw-2">&</span><span class="self">self</span>) -> u32 {
<span class="self">self</span>.frac
}
<span class="doccomment">/// Makes a new `NaiveTime` with the hour number changed.
///
/// # Errors
///
/// Returns `None` if the value for `hour` is invalid.
///
/// # Example
///
/// ```
/// use chrono::{NaiveTime, Timelike};
///
/// let dt = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap();
/// assert_eq!(dt.with_hour(7), Some(NaiveTime::from_hms_nano_opt(7, 56, 4, 12_345_678).unwrap()));
/// assert_eq!(dt.with_hour(24), None);
/// ```
</span><span class="attr">#[inline]
</span><span class="kw">fn </span>with_hour(<span class="kw-2">&</span><span class="self">self</span>, hour: u32) -> <span class="prelude-ty">Option</span><NaiveTime> {
<span class="kw">if </span>hour >= <span class="number">24 </span>{
<span class="kw">return </span><span class="prelude-val">None</span>;
}
<span class="kw">let </span>secs = hour * <span class="number">3600 </span>+ <span class="self">self</span>.secs % <span class="number">3600</span>;
<span class="prelude-val">Some</span>(NaiveTime { secs, ..<span class="kw-2">*</span><span class="self">self </span>})
}
<span class="doccomment">/// Makes a new `NaiveTime` with the minute number changed.
///
/// # Errors
///
/// Returns `None` if the value for `minute` is invalid.
///
/// # Example
///
/// ```
/// use chrono::{NaiveTime, Timelike};
///
/// let dt = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap();
/// assert_eq!(dt.with_minute(45), Some(NaiveTime::from_hms_nano_opt(23, 45, 4, 12_345_678).unwrap()));
/// assert_eq!(dt.with_minute(60), None);
/// ```
</span><span class="attr">#[inline]
</span><span class="kw">fn </span>with_minute(<span class="kw-2">&</span><span class="self">self</span>, min: u32) -> <span class="prelude-ty">Option</span><NaiveTime> {
<span class="kw">if </span>min >= <span class="number">60 </span>{
<span class="kw">return </span><span class="prelude-val">None</span>;
}
<span class="kw">let </span>secs = <span class="self">self</span>.secs / <span class="number">3600 </span>* <span class="number">3600 </span>+ min * <span class="number">60 </span>+ <span class="self">self</span>.secs % <span class="number">60</span>;
<span class="prelude-val">Some</span>(NaiveTime { secs, ..<span class="kw-2">*</span><span class="self">self </span>})
}
<span class="doccomment">/// Makes a new `NaiveTime` with the second number changed.
///
/// As with the [`second`](#method.second) method,
/// the input range is restricted to 0 through 59.
///
/// # Errors
///
/// Returns `None` if the value for `second` is invalid.
///
/// # Example
///
/// ```
/// use chrono::{NaiveTime, Timelike};
///
/// let dt = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap();
/// assert_eq!(dt.with_second(17), Some(NaiveTime::from_hms_nano_opt(23, 56, 17, 12_345_678).unwrap()));
/// assert_eq!(dt.with_second(60), None);
/// ```
</span><span class="attr">#[inline]
</span><span class="kw">fn </span>with_second(<span class="kw-2">&</span><span class="self">self</span>, sec: u32) -> <span class="prelude-ty">Option</span><NaiveTime> {
<span class="kw">if </span>sec >= <span class="number">60 </span>{
<span class="kw">return </span><span class="prelude-val">None</span>;
}
<span class="kw">let </span>secs = <span class="self">self</span>.secs / <span class="number">60 </span>* <span class="number">60 </span>+ sec;
<span class="prelude-val">Some</span>(NaiveTime { secs, ..<span class="kw-2">*</span><span class="self">self </span>})
}
<span class="doccomment">/// Makes a new `NaiveTime` with nanoseconds since the whole non-leap second changed.
///
/// As with the [`nanosecond`](#method.nanosecond) method,
/// the input range can exceed 1,000,000,000 for leap seconds.
///
/// # Errors
///
/// Returns `None` if `nanosecond >= 2,000,000,000`.
///
/// # Example
///
/// ```
/// use chrono::{NaiveTime, Timelike};
///
/// let dt = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap();
/// assert_eq!(dt.with_nanosecond(333_333_333),
/// Some(NaiveTime::from_hms_nano_opt(23, 56, 4, 333_333_333).unwrap()));
/// assert_eq!(dt.with_nanosecond(2_000_000_000), None);
/// ```
///
/// Leap seconds can theoretically follow *any* whole second.
/// The following would be a proper leap second at the time zone offset of UTC-00:03:57
/// (there are several historical examples comparable to this "non-sense" offset),
/// and therefore is allowed.
///
/// ```
/// # use chrono::{NaiveTime, Timelike};
/// let dt = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap();
/// let strange_leap_second = dt.with_nanosecond(1_333_333_333).unwrap();
/// assert_eq!(strange_leap_second.nanosecond(), 1_333_333_333);
/// ```
</span><span class="attr">#[inline]
</span><span class="kw">fn </span>with_nanosecond(<span class="kw-2">&</span><span class="self">self</span>, nano: u32) -> <span class="prelude-ty">Option</span><NaiveTime> {
<span class="kw">if </span>nano >= <span class="number">2_000_000_000 </span>{
<span class="kw">return </span><span class="prelude-val">None</span>;
}
<span class="prelude-val">Some</span>(NaiveTime { frac: nano, ..<span class="kw-2">*</span><span class="self">self </span>})
}
<span class="doccomment">/// Returns the number of non-leap seconds past the last midnight.
///
/// # Example
///
/// ```
/// use chrono::{NaiveTime, Timelike};
///
/// assert_eq!(NaiveTime::from_hms_opt(1, 2, 3).unwrap().num_seconds_from_midnight(),
/// 3723);
/// assert_eq!(NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap().num_seconds_from_midnight(),
/// 86164);
/// assert_eq!(NaiveTime::from_hms_milli_opt(23, 59, 59, 1_000).unwrap().num_seconds_from_midnight(),
/// 86399);
/// ```
</span><span class="attr">#[inline]
</span><span class="kw">fn </span>num_seconds_from_midnight(<span class="kw-2">&</span><span class="self">self</span>) -> u32 {
<span class="self">self</span>.secs <span class="comment">// do not repeat the calculation!
</span>}
}
<span class="doccomment">/// An addition of `Duration` to `NaiveTime` wraps around and never overflows or underflows.
/// In particular the addition ignores integral number of days.
///
/// As a part of Chrono's [leap second handling], the addition assumes that **there is no leap
/// second ever**, except when the `NaiveTime` itself represents a leap second in which case the
/// assumption becomes that **there is exactly a single leap second ever**.
///
/// # Example
///
/// ```
/// use chrono::{Duration, NaiveTime};
///
/// let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };
///
/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::zero(), from_hmsm(3, 5, 7, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(1), from_hmsm(3, 5, 8, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(-1), from_hmsm(3, 5, 6, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(60 + 4), from_hmsm(3, 6, 11, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(7*60*60 - 6*60), from_hmsm(9, 59, 7, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::milliseconds(80), from_hmsm(3, 5, 7, 80));
/// assert_eq!(from_hmsm(3, 5, 7, 950) + Duration::milliseconds(280), from_hmsm(3, 5, 8, 230));
/// assert_eq!(from_hmsm(3, 5, 7, 950) + Duration::milliseconds(-980), from_hmsm(3, 5, 6, 970));
/// ```
///
/// The addition wraps around.
///
/// ```
/// # use chrono::{Duration, NaiveTime};
/// # let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };
/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(22*60*60), from_hmsm(1, 5, 7, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(-8*60*60), from_hmsm(19, 5, 7, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::days(800), from_hmsm(3, 5, 7, 0));
/// ```
///
/// Leap seconds are handled, but the addition assumes that it is the only leap second happened.
///
/// ```
/// # use chrono::{Duration, NaiveTime};
/// # let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };
/// let leap = from_hmsm(3, 5, 59, 1_300);
/// assert_eq!(leap + Duration::zero(), from_hmsm(3, 5, 59, 1_300));
/// assert_eq!(leap + Duration::milliseconds(-500), from_hmsm(3, 5, 59, 800));
/// assert_eq!(leap + Duration::milliseconds(500), from_hmsm(3, 5, 59, 1_800));
/// assert_eq!(leap + Duration::milliseconds(800), from_hmsm(3, 6, 0, 100));
/// assert_eq!(leap + Duration::seconds(10), from_hmsm(3, 6, 9, 300));
/// assert_eq!(leap + Duration::seconds(-10), from_hmsm(3, 5, 50, 300));
/// assert_eq!(leap + Duration::days(1), from_hmsm(3, 5, 59, 300));
/// ```
///
/// [leap second handling]: crate::NaiveTime#leap-second-handling
</span><span class="kw">impl </span>Add<OldDuration> <span class="kw">for </span>NaiveTime {
<span class="kw">type </span>Output = NaiveTime;
<span class="attr">#[inline]
</span><span class="kw">fn </span>add(<span class="self">self</span>, rhs: OldDuration) -> NaiveTime {
<span class="self">self</span>.overflowing_add_signed(rhs).<span class="number">0
</span>}
}
<span class="kw">impl </span>AddAssign<OldDuration> <span class="kw">for </span>NaiveTime {
<span class="attr">#[inline]
</span><span class="kw">fn </span>add_assign(<span class="kw-2">&mut </span><span class="self">self</span>, rhs: OldDuration) {
<span class="kw-2">*</span><span class="self">self </span>= <span class="self">self</span>.add(rhs);
}
}
<span class="kw">impl </span>Add<Duration> <span class="kw">for </span>NaiveTime {
<span class="kw">type </span>Output = NaiveTime;
<span class="attr">#[inline]
</span><span class="kw">fn </span>add(<span class="self">self</span>, rhs: Duration) -> NaiveTime {
<span class="kw">let </span>rhs = OldDuration::from_std(rhs)
.expect(<span class="string">"overflow converting from core::time::Duration to chrono::Duration"</span>);
<span class="self">self</span>.overflowing_add_signed(rhs).<span class="number">0
</span>}
}
<span class="kw">impl </span>AddAssign<Duration> <span class="kw">for </span>NaiveTime {
<span class="attr">#[inline]
</span><span class="kw">fn </span>add_assign(<span class="kw-2">&mut </span><span class="self">self</span>, rhs: Duration) {
<span class="kw">let </span>rhs = OldDuration::from_std(rhs)
.expect(<span class="string">"overflow converting from core::time::Duration to chrono::Duration"</span>);
<span class="kw-2">*</span><span class="self">self </span>+= rhs;
}
}
<span class="doccomment">/// A subtraction of `Duration` from `NaiveTime` wraps around and never overflows or underflows.
/// In particular the addition ignores integral number of days.
/// It is the same as the addition with a negated `Duration`.
///
/// As a part of Chrono's [leap second handling], the subtraction assumes that **there is no leap
/// second ever**, except when the `NaiveTime` itself represents a leap second in which case the
/// assumption becomes that **there is exactly a single leap second ever**.
///
/// # Example
///
/// ```
/// use chrono::{Duration, NaiveTime};
///
/// let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };
///
/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::zero(), from_hmsm(3, 5, 7, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(1), from_hmsm(3, 5, 6, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(60 + 5), from_hmsm(3, 4, 2, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(2*60*60 + 6*60), from_hmsm(0, 59, 7, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::milliseconds(80), from_hmsm(3, 5, 6, 920));
/// assert_eq!(from_hmsm(3, 5, 7, 950) - Duration::milliseconds(280), from_hmsm(3, 5, 7, 670));
/// ```
///
/// The subtraction wraps around.
///
/// ```
/// # use chrono::{Duration, NaiveTime};
/// # let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };
/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(8*60*60), from_hmsm(19, 5, 7, 0));
/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::days(800), from_hmsm(3, 5, 7, 0));
/// ```
///
/// Leap seconds are handled, but the subtraction assumes that it is the only leap second happened.
///
/// ```
/// # use chrono::{Duration, NaiveTime};
/// # let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };
/// let leap = from_hmsm(3, 5, 59, 1_300);
/// assert_eq!(leap - Duration::zero(), from_hmsm(3, 5, 59, 1_300));
/// assert_eq!(leap - Duration::milliseconds(200), from_hmsm(3, 5, 59, 1_100));
/// assert_eq!(leap - Duration::milliseconds(500), from_hmsm(3, 5, 59, 800));
/// assert_eq!(leap - Duration::seconds(60), from_hmsm(3, 5, 0, 300));
/// assert_eq!(leap - Duration::days(1), from_hmsm(3, 6, 0, 300));
/// ```
///
/// [leap second handling]: crate::NaiveTime#leap-second-handling
</span><span class="kw">impl </span>Sub<OldDuration> <span class="kw">for </span>NaiveTime {
<span class="kw">type </span>Output = NaiveTime;
<span class="attr">#[inline]
</span><span class="kw">fn </span>sub(<span class="self">self</span>, rhs: OldDuration) -> NaiveTime {
<span class="self">self</span>.overflowing_sub_signed(rhs).<span class="number">0
</span>}
}
<span class="kw">impl </span>SubAssign<OldDuration> <span class="kw">for </span>NaiveTime {
<span class="attr">#[inline]
</span><span class="kw">fn </span>sub_assign(<span class="kw-2">&mut </span><span class="self">self</span>, rhs: OldDuration) {
<span class="kw-2">*</span><span class="self">self </span>= <span class="self">self</span>.sub(rhs);
}
}
<span class="kw">impl </span>Sub<Duration> <span class="kw">for </span>NaiveTime {
<span class="kw">type </span>Output = NaiveTime;
<span class="attr">#[inline]
</span><span class="kw">fn </span>sub(<span class="self">self</span>, rhs: Duration) -> NaiveTime {
<span class="kw">let </span>rhs = OldDuration::from_std(rhs)
.expect(<span class="string">"overflow converting from core::time::Duration to chrono::Duration"</span>);
<span class="self">self</span>.overflowing_sub_signed(rhs).<span class="number">0
</span>}
}
<span class="kw">impl </span>SubAssign<Duration> <span class="kw">for </span>NaiveTime {
<span class="attr">#[inline]
</span><span class="kw">fn </span>sub_assign(<span class="kw-2">&mut </span><span class="self">self</span>, rhs: Duration) {
<span class="kw">let </span>rhs = OldDuration::from_std(rhs)
.expect(<span class="string">"overflow converting from core::time::Duration to chrono::Duration"</span>);
<span class="kw-2">*</span><span class="self">self </span>-= rhs;
}
}
<span class="doccomment">/// Subtracts another `NaiveTime` from the current time.
/// Returns a `Duration` within +/- 1 day.
/// This does not overflow or underflow at all.
///
/// As a part of Chrono's [leap second handling](#leap-second-handling),
/// the subtraction assumes that **there is no leap second ever**,
/// except when any of the `NaiveTime`s themselves represents a leap second
/// in which case the assumption becomes that
/// **there are exactly one (or two) leap second(s) ever**.
///
/// The implementation is a wrapper around
/// [`NaiveTime::signed_duration_since`](#method.signed_duration_since).
///
/// # Example
///
/// ```
/// use chrono::{Duration, NaiveTime};
///
/// let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };
///
/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 7, 900), Duration::zero());
/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 7, 875), Duration::milliseconds(25));
/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 6, 925), Duration::milliseconds(975));
/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 0, 900), Duration::seconds(7));
/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 0, 7, 900), Duration::seconds(5 * 60));
/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(0, 5, 7, 900), Duration::seconds(3 * 3600));
/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(4, 5, 7, 900), Duration::seconds(-3600));
/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(2, 4, 6, 800),
/// Duration::seconds(3600 + 60 + 1) + Duration::milliseconds(100));
/// ```
///
/// Leap seconds are handled, but the subtraction assumes that
/// there were no other leap seconds happened.
///
/// ```
/// # use chrono::{Duration, NaiveTime};
/// # let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };
/// assert_eq!(from_hmsm(3, 0, 59, 1_000) - from_hmsm(3, 0, 59, 0), Duration::seconds(1));
/// assert_eq!(from_hmsm(3, 0, 59, 1_500) - from_hmsm(3, 0, 59, 0),
/// Duration::milliseconds(1500));
/// assert_eq!(from_hmsm(3, 0, 59, 1_000) - from_hmsm(3, 0, 0, 0), Duration::seconds(60));
/// assert_eq!(from_hmsm(3, 0, 0, 0) - from_hmsm(2, 59, 59, 1_000), Duration::seconds(1));
/// assert_eq!(from_hmsm(3, 0, 59, 1_000) - from_hmsm(2, 59, 59, 1_000),
/// Duration::seconds(61));
/// ```
</span><span class="kw">impl </span>Sub<NaiveTime> <span class="kw">for </span>NaiveTime {
<span class="kw">type </span>Output = OldDuration;
<span class="attr">#[inline]
</span><span class="kw">fn </span>sub(<span class="self">self</span>, rhs: NaiveTime) -> OldDuration {
<span class="self">self</span>.signed_duration_since(rhs)
}
}
<span class="doccomment">/// The `Debug` output of the naive time `t` is the same as
/// [`t.format("%H:%M:%S%.f")`](../format/strftime/index.html).
///
/// The string printed can be readily parsed via the `parse` method on `str`.
///
/// It should be noted that, for leap seconds not on the minute boundary,
/// it may print a representation not distinguishable from non-leap seconds.
/// This doesn't matter in practice, since such leap seconds never happened.
/// (By the time of the first leap second on 1972-06-30,
/// every time zone offset around the world has standardized to the 5-minute alignment.)
///
/// # Example
///
/// ```
/// use chrono::NaiveTime;
///
/// assert_eq!(format!("{:?}", NaiveTime::from_hms_opt(23, 56, 4).unwrap()), "23:56:04");
/// assert_eq!(format!("{:?}", NaiveTime::from_hms_milli_opt(23, 56, 4, 12).unwrap()), "23:56:04.012");
/// assert_eq!(format!("{:?}", NaiveTime::from_hms_micro_opt(23, 56, 4, 1234).unwrap()), "23:56:04.001234");
/// assert_eq!(format!("{:?}", NaiveTime::from_hms_nano_opt(23, 56, 4, 123456).unwrap()), "23:56:04.000123456");
/// ```
///
/// Leap seconds may also be used.
///
/// ```
/// # use chrono::NaiveTime;
/// assert_eq!(format!("{:?}", NaiveTime::from_hms_milli_opt(6, 59, 59, 1_500).unwrap()), "06:59:60.500");
/// ```
</span><span class="kw">impl </span>fmt::Debug <span class="kw">for </span>NaiveTime {
<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result {
<span class="kw">let </span>(hour, min, sec) = <span class="self">self</span>.hms();
<span class="kw">let </span>(sec, nano) = <span class="kw">if </span><span class="self">self</span>.frac >= <span class="number">1_000_000_000 </span>{
(sec + <span class="number">1</span>, <span class="self">self</span>.frac - <span class="number">1_000_000_000</span>)
} <span class="kw">else </span>{
(sec, <span class="self">self</span>.frac)
};
<span class="kw">use </span>core::fmt::Write;
write_hundreds(f, hour <span class="kw">as </span>u8)<span class="question-mark">?</span>;
f.write_char(<span class="string">':'</span>)<span class="question-mark">?</span>;
write_hundreds(f, min <span class="kw">as </span>u8)<span class="question-mark">?</span>;
f.write_char(<span class="string">':'</span>)<span class="question-mark">?</span>;
write_hundreds(f, sec <span class="kw">as </span>u8)<span class="question-mark">?</span>;
<span class="kw">if </span>nano == <span class="number">0 </span>{
<span class="prelude-val">Ok</span>(())
} <span class="kw">else if </span>nano % <span class="number">1_000_000 </span>== <span class="number">0 </span>{
<span class="macro">write!</span>(f, <span class="string">".{:03}"</span>, nano / <span class="number">1_000_000</span>)
} <span class="kw">else if </span>nano % <span class="number">1_000 </span>== <span class="number">0 </span>{
<span class="macro">write!</span>(f, <span class="string">".{:06}"</span>, nano / <span class="number">1_000</span>)
} <span class="kw">else </span>{
<span class="macro">write!</span>(f, <span class="string">".{:09}"</span>, nano)
}
}
}
<span class="doccomment">/// The `Display` output of the naive time `t` is the same as
/// [`t.format("%H:%M:%S%.f")`](../format/strftime/index.html).
///
/// The string printed can be readily parsed via the `parse` method on `str`.
///
/// It should be noted that, for leap seconds not on the minute boundary,
/// it may print a representation not distinguishable from non-leap seconds.
/// This doesn't matter in practice, since such leap seconds never happened.
/// (By the time of the first leap second on 1972-06-30,
/// every time zone offset around the world has standardized to the 5-minute alignment.)
///
/// # Example
///
/// ```
/// use chrono::NaiveTime;
///
/// assert_eq!(format!("{}", NaiveTime::from_hms_opt(23, 56, 4).unwrap()), "23:56:04");
/// assert_eq!(format!("{}", NaiveTime::from_hms_milli_opt(23, 56, 4, 12).unwrap()), "23:56:04.012");
/// assert_eq!(format!("{}", NaiveTime::from_hms_micro_opt(23, 56, 4, 1234).unwrap()), "23:56:04.001234");
/// assert_eq!(format!("{}", NaiveTime::from_hms_nano_opt(23, 56, 4, 123456).unwrap()), "23:56:04.000123456");
/// ```
///
/// Leap seconds may also be used.
///
/// ```
/// # use chrono::NaiveTime;
/// assert_eq!(format!("{}", NaiveTime::from_hms_milli_opt(6, 59, 59, 1_500).unwrap()), "06:59:60.500");
/// ```
</span><span class="kw">impl </span>fmt::Display <span class="kw">for </span>NaiveTime {
<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result {
fmt::Debug::fmt(<span class="self">self</span>, f)
}
}
<span class="doccomment">/// Parsing a `str` into a `NaiveTime` uses the same format,
/// [`%H:%M:%S%.f`](../format/strftime/index.html), as in `Debug` and `Display`.
///
/// # Example
///
/// ```
/// use chrono::NaiveTime;
///
/// let t = NaiveTime::from_hms_opt(23, 56, 4).unwrap();
/// assert_eq!("23:56:04".parse::<NaiveTime>(), Ok(t));
///
/// let t = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap();
/// assert_eq!("23:56:4.012345678".parse::<NaiveTime>(), Ok(t));
///
/// let t = NaiveTime::from_hms_nano_opt(23, 59, 59, 1_234_567_890).unwrap(); // leap second
/// assert_eq!("23:59:60.23456789".parse::<NaiveTime>(), Ok(t));
///
/// // Seconds are optional
/// let t = NaiveTime::from_hms_opt(23, 56, 0).unwrap();
/// assert_eq!("23:56".parse::<NaiveTime>(), Ok(t));
///
/// assert!("foo".parse::<NaiveTime>().is_err());
/// ```
</span><span class="kw">impl </span>str::FromStr <span class="kw">for </span>NaiveTime {
<span class="kw">type </span><span class="prelude-val">Err </span>= ParseError;
<span class="kw">fn </span>from_str(s: <span class="kw-2">&</span>str) -> ParseResult<NaiveTime> {
<span class="kw">const </span>HOUR_AND_MINUTE: <span class="kw-2">&</span>[Item<<span class="lifetime">'static</span>>] = <span class="kw-2">&</span>[
Item::Numeric(Numeric::Hour, Pad::Zero),
Item::Space(<span class="string">""</span>),
Item::Literal(<span class="string">":"</span>),
Item::Numeric(Numeric::Minute, Pad::Zero),
];
<span class="kw">const </span>SECOND_AND_NANOS: <span class="kw-2">&</span>[Item<<span class="lifetime">'static</span>>] = <span class="kw-2">&</span>[
Item::Space(<span class="string">""</span>),
Item::Literal(<span class="string">":"</span>),
Item::Numeric(Numeric::Second, Pad::Zero),
Item::Fixed(Fixed::Nanosecond),
Item::Space(<span class="string">""</span>),
];
<span class="kw">const </span>TRAILING_WHITESPACE: [Item<<span class="lifetime">'static</span>>; <span class="number">1</span>] = [Item::Space(<span class="string">""</span>)];
<span class="kw">let </span><span class="kw-2">mut </span>parsed = Parsed::new();
<span class="kw">let </span>s = parse_and_remainder(<span class="kw-2">&mut </span>parsed, s, HOUR_AND_MINUTE.iter())<span class="question-mark">?</span>;
<span class="comment">// Seconds are optional, don't fail if parsing them doesn't succeed.
</span><span class="kw">let </span>s = parse_and_remainder(<span class="kw-2">&mut </span>parsed, s, SECOND_AND_NANOS.iter()).unwrap_or(s);
parse(<span class="kw-2">&mut </span>parsed, s, TRAILING_WHITESPACE.iter())<span class="question-mark">?</span>;
parsed.to_naive_time()
}
}
<span class="doccomment">/// The default value for a NaiveTime is midnight, 00:00:00 exactly.
///
/// # Example
///
/// ```rust
/// use chrono::NaiveTime;
///
/// let default_time = NaiveTime::default();
/// assert_eq!(default_time, NaiveTime::from_hms_opt(0, 0, 0).unwrap());
/// ```
</span><span class="kw">impl </span>Default <span class="kw">for </span>NaiveTime {
<span class="kw">fn </span>default() -> <span class="self">Self </span>{
NaiveTime::from_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap()
}
}
<span class="attr">#[cfg(all(test, any(feature = <span class="string">"rustc-serialize"</span>, feature = <span class="string">"serde"</span>)))]
</span><span class="kw">fn </span>test_encodable_json<F, E>(to_string: F)
<span class="kw">where
</span>F: Fn(<span class="kw-2">&</span>NaiveTime) -> <span class="prelude-ty">Result</span><String, E>,
E: ::std::fmt::Debug,
{
<span class="macro">assert_eq!</span>(
to_string(<span class="kw-2">&</span>NaiveTime::from_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap()).ok(),
<span class="prelude-val">Some</span>(<span class="string">r#""00:00:00""#</span>.into())
);
<span class="macro">assert_eq!</span>(
to_string(<span class="kw-2">&</span>NaiveTime::from_hms_milli_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">950</span>).unwrap()).ok(),
<span class="prelude-val">Some</span>(<span class="string">r#""00:00:00.950""#</span>.into())
);
<span class="macro">assert_eq!</span>(
to_string(<span class="kw-2">&</span>NaiveTime::from_hms_milli_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">1_000</span>).unwrap()).ok(),
<span class="prelude-val">Some</span>(<span class="string">r#""00:00:60""#</span>.into())
);
<span class="macro">assert_eq!</span>(
to_string(<span class="kw-2">&</span>NaiveTime::from_hms_opt(<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>).unwrap()).ok(),
<span class="prelude-val">Some</span>(<span class="string">r#""00:01:02""#</span>.into())
);
<span class="macro">assert_eq!</span>(
to_string(<span class="kw-2">&</span>NaiveTime::from_hms_nano_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">98765432</span>).unwrap()).ok(),
<span class="prelude-val">Some</span>(<span class="string">r#""03:05:07.098765432""#</span>.into())
);
<span class="macro">assert_eq!</span>(
to_string(<span class="kw-2">&</span>NaiveTime::from_hms_opt(<span class="number">7</span>, <span class="number">8</span>, <span class="number">9</span>).unwrap()).ok(),
<span class="prelude-val">Some</span>(<span class="string">r#""07:08:09""#</span>.into())
);
<span class="macro">assert_eq!</span>(
to_string(<span class="kw-2">&</span>NaiveTime::from_hms_micro_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>).unwrap()).ok(),
<span class="prelude-val">Some</span>(<span class="string">r#""12:34:56.000789""#</span>.into())
);
<span class="macro">assert_eq!</span>(
to_string(<span class="kw-2">&</span>NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_999_999_999</span>).unwrap()).ok(),
<span class="prelude-val">Some</span>(<span class="string">r#""23:59:60.999999999""#</span>.into())
);
}
<span class="attr">#[cfg(all(test, any(feature = <span class="string">"rustc-serialize"</span>, feature = <span class="string">"serde"</span>)))]
</span><span class="kw">fn </span>test_decodable_json<F, E>(from_str: F)
<span class="kw">where
</span>F: Fn(<span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><NaiveTime, E>,
E: ::std::fmt::Debug,
{
<span class="macro">assert_eq!</span>(from_str(<span class="string">r#""00:00:00""#</span>).ok(), <span class="prelude-val">Some</span>(NaiveTime::from_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap()));
<span class="macro">assert_eq!</span>(from_str(<span class="string">r#""0:0:0""#</span>).ok(), <span class="prelude-val">Some</span>(NaiveTime::from_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap()));
<span class="macro">assert_eq!</span>(
from_str(<span class="string">r#""00:00:00.950""#</span>).ok(),
<span class="prelude-val">Some</span>(NaiveTime::from_hms_milli_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">950</span>).unwrap())
);
<span class="macro">assert_eq!</span>(
from_str(<span class="string">r#""0:0:0.95""#</span>).ok(),
<span class="prelude-val">Some</span>(NaiveTime::from_hms_milli_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">950</span>).unwrap())
);
<span class="macro">assert_eq!</span>(
from_str(<span class="string">r#""00:00:60""#</span>).ok(),
<span class="prelude-val">Some</span>(NaiveTime::from_hms_milli_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">1_000</span>).unwrap())
);
<span class="macro">assert_eq!</span>(from_str(<span class="string">r#""00:01:02""#</span>).ok(), <span class="prelude-val">Some</span>(NaiveTime::from_hms_opt(<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>).unwrap()));
<span class="macro">assert_eq!</span>(
from_str(<span class="string">r#""03:05:07.098765432""#</span>).ok(),
<span class="prelude-val">Some</span>(NaiveTime::from_hms_nano_opt(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">98765432</span>).unwrap())
);
<span class="macro">assert_eq!</span>(from_str(<span class="string">r#""07:08:09""#</span>).ok(), <span class="prelude-val">Some</span>(NaiveTime::from_hms_opt(<span class="number">7</span>, <span class="number">8</span>, <span class="number">9</span>).unwrap()));
<span class="macro">assert_eq!</span>(
from_str(<span class="string">r#""12:34:56.000789""#</span>).ok(),
<span class="prelude-val">Some</span>(NaiveTime::from_hms_micro_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>).unwrap())
);
<span class="macro">assert_eq!</span>(
from_str(<span class="string">r#""23:59:60.999999999""#</span>).ok(),
<span class="prelude-val">Some</span>(NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_999_999_999</span>).unwrap())
);
<span class="macro">assert_eq!</span>(
from_str(<span class="string">r#""23:59:60.9999999999997""#</span>).ok(), <span class="comment">// excess digits are ignored
</span><span class="prelude-val">Some</span>(NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_999_999_999</span>).unwrap())
);
<span class="comment">// bad formats
</span><span class="macro">assert!</span>(from_str(<span class="string">r#""""#</span>).is_err());
<span class="macro">assert!</span>(from_str(<span class="string">r#""000000""#</span>).is_err());
<span class="macro">assert!</span>(from_str(<span class="string">r#""00:00:61""#</span>).is_err());
<span class="macro">assert!</span>(from_str(<span class="string">r#""00:60:00""#</span>).is_err());
<span class="macro">assert!</span>(from_str(<span class="string">r#""24:00:00""#</span>).is_err());
<span class="macro">assert!</span>(from_str(<span class="string">r#""23:59:59,1""#</span>).is_err());
<span class="macro">assert!</span>(from_str(<span class="string">r#""012:34:56""#</span>).is_err());
<span class="macro">assert!</span>(from_str(<span class="string">r#""hh:mm:ss""#</span>).is_err());
<span class="macro">assert!</span>(from_str(<span class="string">r#"0"#</span>).is_err());
<span class="macro">assert!</span>(from_str(<span class="string">r#"86399"#</span>).is_err());
<span class="macro">assert!</span>(from_str(<span class="string">r#"{}"#</span>).is_err());
<span class="comment">// pre-0.3.0 rustc-serialize format is now invalid
</span><span class="macro">assert!</span>(from_str(<span class="string">r#"{"secs":0,"frac":0}"#</span>).is_err());
<span class="macro">assert!</span>(from_str(<span class="string">r#"null"#</span>).is_err());
}
</code></pre></div>
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