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</pre><pre class='rust '>
<span class='kw'>use</span> <span class='kw'>super</span>::{<span class='ident'>Timespec</span>, <span class='ident'>Tm</span>, <span class='ident'>at_utc</span>, <span class='ident'>ParseError</span>, <span class='ident'>NSEC_PER_SEC</span>};
<span class='doccomment'>/// Parses the time from the string according to the format string.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>strptime</span>(<span class='kw-2'>mut</span> <span class='ident'>s</span>: <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>format</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>Tm</span>, <span class='ident'>ParseError</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>tm</span> <span class='op'>=</span> <span class='ident'>Tm</span> {
<span class='ident'>tm_sec</span>: <span class='number'>0</span>,
<span class='ident'>tm_min</span>: <span class='number'>0</span>,
<span class='ident'>tm_hour</span>: <span class='number'>0</span>,
<span class='ident'>tm_mday</span>: <span class='number'>0</span>,
<span class='ident'>tm_mon</span>: <span class='number'>0</span>,
<span class='ident'>tm_year</span>: <span class='number'>0</span>,
<span class='ident'>tm_wday</span>: <span class='number'>0</span>,
<span class='ident'>tm_yday</span>: <span class='number'>0</span>,
<span class='ident'>tm_isdst</span>: <span class='number'>0</span>,
<span class='ident'>tm_utcoff</span>: <span class='number'>0</span>,
<span class='ident'>tm_nsec</span>: <span class='number'>0</span>,
};
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>chars</span> <span class='op'>=</span> <span class='ident'>format</span>.<span class='ident'>chars</span>();
<span class='kw'>while</span> <span class='kw'>let</span> <span class='prelude-val'>Some</span>(<span class='ident'>ch</span>) <span class='op'>=</span> <span class='ident'>chars</span>.<span class='ident'>next</span>() {
<span class='kw'>if</span> <span class='ident'>ch</span> <span class='op'>==</span> <span class='string'>'%'</span> {
<span class='kw'>if</span> <span class='kw'>let</span> <span class='prelude-val'>Some</span>(<span class='ident'>ch</span>) <span class='op'>=</span> <span class='ident'>chars</span>.<span class='ident'>next</span>() {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>parse_type</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>s</span>, <span class='ident'>ch</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>tm</span>));
}
} <span class='kw'>else</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>parse_char</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>s</span>, <span class='ident'>ch</span>));
}
}
<span class='prelude-val'>Ok</span>(<span class='ident'>tm</span>)
}
<span class='kw'>fn</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>ch</span>: <span class='ident'>char</span>, <span class='ident'>tm</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Tm</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span>(), <span class='ident'>ParseError</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='ident'>ch</span> {
<span class='string'>'A'</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='ident'>match_strs</span>(<span class='ident'>s</span>, <span class='kw-2'>&</span>[(<span class='string'>"Sunday"</span>, <span class='number'>0</span>),
(<span class='string'>"Monday"</span>, <span class='number'>1</span>),
(<span class='string'>"Tuesday"</span>, <span class='number'>2</span>),
(<span class='string'>"Wednesday"</span>, <span class='number'>3</span>),
(<span class='string'>"Thursday"</span>, <span class='number'>4</span>),
(<span class='string'>"Friday"</span>, <span class='number'>5</span>),
(<span class='string'>"Saturday"</span>, <span class='number'>6</span>)]) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_wday</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidDay</span>)
},
<span class='string'>'a'</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='ident'>match_strs</span>(<span class='ident'>s</span>, <span class='kw-2'>&</span>[(<span class='string'>"Sun"</span>, <span class='number'>0</span>),
(<span class='string'>"Mon"</span>, <span class='number'>1</span>),
(<span class='string'>"Tue"</span>, <span class='number'>2</span>),
(<span class='string'>"Wed"</span>, <span class='number'>3</span>),
(<span class='string'>"Thu"</span>, <span class='number'>4</span>),
(<span class='string'>"Fri"</span>, <span class='number'>5</span>),
(<span class='string'>"Sat"</span>, <span class='number'>6</span>)]) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_wday</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidDay</span>)
},
<span class='string'>'B'</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='ident'>match_strs</span>(<span class='ident'>s</span>, <span class='kw-2'>&</span>[(<span class='string'>"January"</span>, <span class='number'>0</span>),
(<span class='string'>"February"</span>, <span class='number'>1</span>),
(<span class='string'>"March"</span>, <span class='number'>2</span>),
(<span class='string'>"April"</span>, <span class='number'>3</span>),
(<span class='string'>"May"</span>, <span class='number'>4</span>),
(<span class='string'>"June"</span>, <span class='number'>5</span>),
(<span class='string'>"July"</span>, <span class='number'>6</span>),
(<span class='string'>"August"</span>, <span class='number'>7</span>),
(<span class='string'>"September"</span>, <span class='number'>8</span>),
(<span class='string'>"October"</span>, <span class='number'>9</span>),
(<span class='string'>"November"</span>, <span class='number'>10</span>),
(<span class='string'>"December"</span>, <span class='number'>11</span>)]) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_mon</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidMonth</span>)
},
<span class='string'>'b'</span> <span class='op'>|</span> <span class='string'>'h'</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='ident'>match_strs</span>(<span class='ident'>s</span>, <span class='kw-2'>&</span>[(<span class='string'>"Jan"</span>, <span class='number'>0</span>),
(<span class='string'>"Feb"</span>, <span class='number'>1</span>),
(<span class='string'>"Mar"</span>, <span class='number'>2</span>),
(<span class='string'>"Apr"</span>, <span class='number'>3</span>),
(<span class='string'>"May"</span>, <span class='number'>4</span>),
(<span class='string'>"Jun"</span>, <span class='number'>5</span>),
(<span class='string'>"Jul"</span>, <span class='number'>6</span>),
(<span class='string'>"Aug"</span>, <span class='number'>7</span>),
(<span class='string'>"Sep"</span>, <span class='number'>8</span>),
(<span class='string'>"Oct"</span>, <span class='number'>9</span>),
(<span class='string'>"Nov"</span>, <span class='number'>10</span>),
(<span class='string'>"Dec"</span>, <span class='number'>11</span>)]) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_mon</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidMonth</span>)
},
<span class='string'>'C'</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>2</span>, <span class='bool-val'>false</span>, <span class='number'>0</span>, <span class='number'>99</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_year</span> <span class='op'>+=</span> (<span class='ident'>v</span> <span class='op'>*</span> <span class='number'>100</span>) <span class='op'>-</span> <span class='number'>1900</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidYear</span>)
},
<span class='string'>'c'</span> <span class='op'>=></span> {
<span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'a'</span>, <span class='ident'>tm</span>)
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>' '</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'b'</span>, <span class='ident'>tm</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>' '</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'e'</span>, <span class='ident'>tm</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>' '</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'T'</span>, <span class='ident'>tm</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>' '</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'Y'</span>, <span class='ident'>tm</span>))
}
<span class='string'>'D'</span> <span class='op'>|</span> <span class='string'>'x'</span> <span class='op'>=></span> {
<span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'m'</span>, <span class='ident'>tm</span>)
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'/'</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'d'</span>, <span class='ident'>tm</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'/'</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'y'</span>, <span class='ident'>tm</span>))
}
<span class='string'>'d'</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>2</span>, <span class='bool-val'>false</span>, <span class='number'>1</span>, <span class='number'>31</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_mday</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidDayOfMonth</span>)
},
<span class='string'>'e'</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>2</span>, <span class='bool-val'>true</span>, <span class='number'>1</span>, <span class='number'>31</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_mday</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidDayOfMonth</span>)
},
<span class='string'>'f'</span> <span class='op'>=></span> {
<span class='ident'>tm</span>.<span class='ident'>tm_nsec</span> <span class='op'>=</span> <span class='ident'>match_fractional_seconds</span>(<span class='ident'>s</span>);
<span class='prelude-val'>Ok</span>(())
}
<span class='string'>'F'</span> <span class='op'>=></span> {
<span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'Y'</span>, <span class='ident'>tm</span>)
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'-'</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'m'</span>, <span class='ident'>tm</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'-'</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'d'</span>, <span class='ident'>tm</span>))
}
<span class='string'>'H'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>2</span>, <span class='bool-val'>false</span>, <span class='number'>0</span>, <span class='number'>23</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_hour</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidHour</span>)
}
}
<span class='string'>'I'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>2</span>, <span class='bool-val'>false</span>, <span class='number'>1</span>, <span class='number'>12</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_hour</span> <span class='op'>=</span> <span class='kw'>if</span> <span class='ident'>v</span> <span class='op'>==</span> <span class='number'>12</span> { <span class='number'>0</span> } <span class='kw'>else</span> { <span class='ident'>v</span> }; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidHour</span>)
}
}
<span class='string'>'j'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>3</span>, <span class='bool-val'>false</span>, <span class='number'>1</span>, <span class='number'>366</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_yday</span> <span class='op'>=</span> <span class='ident'>v</span> <span class='op'>-</span> <span class='number'>1</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidDayOfYear</span>)
}
}
<span class='string'>'k'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>2</span>, <span class='bool-val'>true</span>, <span class='number'>0</span>, <span class='number'>23</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_hour</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidHour</span>)
}
}
<span class='string'>'l'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>2</span>, <span class='bool-val'>true</span>, <span class='number'>1</span>, <span class='number'>12</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_hour</span> <span class='op'>=</span> <span class='kw'>if</span> <span class='ident'>v</span> <span class='op'>==</span> <span class='number'>12</span> { <span class='number'>0</span> } <span class='kw'>else</span> { <span class='ident'>v</span> }; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidHour</span>)
}
}
<span class='string'>'M'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>2</span>, <span class='bool-val'>false</span>, <span class='number'>0</span>, <span class='number'>59</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_min</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidMinute</span>)
}
}
<span class='string'>'m'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>2</span>, <span class='bool-val'>false</span>, <span class='number'>1</span>, <span class='number'>12</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_mon</span> <span class='op'>=</span> <span class='ident'>v</span> <span class='op'>-</span> <span class='number'>1</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidMonth</span>)
}
}
<span class='string'>'n'</span> <span class='op'>=></span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'\n'</span>),
<span class='string'>'P'</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='ident'>match_strs</span>(<span class='ident'>s</span>, <span class='kw-2'>&</span>[(<span class='string'>"am"</span>, <span class='number'>0</span>), (<span class='string'>"pm"</span>, <span class='number'>12</span>)]) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_hour</span> <span class='op'>+=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidHour</span>)
},
<span class='string'>'p'</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='ident'>match_strs</span>(<span class='ident'>s</span>, <span class='kw-2'>&</span>[(<span class='string'>"AM"</span>, <span class='number'>0</span>), (<span class='string'>"PM"</span>, <span class='number'>12</span>)]) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_hour</span> <span class='op'>+=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidHour</span>)
},
<span class='string'>'R'</span> <span class='op'>=></span> {
<span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'H'</span>, <span class='ident'>tm</span>)
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>':'</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'M'</span>, <span class='ident'>tm</span>))
}
<span class='string'>'r'</span> <span class='op'>=></span> {
<span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'I'</span>, <span class='ident'>tm</span>)
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>':'</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'M'</span>, <span class='ident'>tm</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>':'</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'S'</span>, <span class='ident'>tm</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>' '</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'p'</span>, <span class='ident'>tm</span>))
}
<span class='string'>'s'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_i64</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>18</span>, <span class='bool-val'>false</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> {
<span class='kw-2'>*</span><span class='ident'>tm</span> <span class='op'>=</span> <span class='ident'>at_utc</span>(<span class='ident'>Timespec</span>::<span class='ident'>new</span>(<span class='ident'>v</span>, <span class='number'>0</span>));
<span class='prelude-val'>Ok</span>(())
},
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidSecondsSinceEpoch</span>)
}
}
<span class='string'>'S'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>2</span>, <span class='bool-val'>false</span>, <span class='number'>0</span>, <span class='number'>60</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_sec</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidSecond</span>)
}
}
<span class='comment'>//'s' {}</span>
<span class='string'>'T'</span> <span class='op'>|</span> <span class='string'>'X'</span> <span class='op'>=></span> {
<span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'H'</span>, <span class='ident'>tm</span>)
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>':'</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'M'</span>, <span class='ident'>tm</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>':'</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'S'</span>, <span class='ident'>tm</span>))
}
<span class='string'>'t'</span> <span class='op'>=></span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'\t'</span>),
<span class='string'>'u'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>1</span>, <span class='bool-val'>false</span>, <span class='number'>1</span>, <span class='number'>7</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_wday</span> <span class='op'>=</span> <span class='kw'>if</span> <span class='ident'>v</span> <span class='op'>==</span> <span class='number'>7</span> { <span class='number'>0</span> } <span class='kw'>else</span> { <span class='ident'>v</span> }; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidDayOfWeek</span>)
}
}
<span class='string'>'v'</span> <span class='op'>=></span> {
<span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'e'</span>, <span class='ident'>tm</span>)
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'-'</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'b'</span>, <span class='ident'>tm</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'-'</span>))
.<span class='ident'>and_then</span>(<span class='op'>|</span>()<span class='op'>|</span> <span class='ident'>parse_type</span>(<span class='ident'>s</span>, <span class='string'>'Y'</span>, <span class='ident'>tm</span>))
}
<span class='comment'>//'W' {}</span>
<span class='string'>'w'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>1</span>, <span class='bool-val'>false</span>, <span class='number'>0</span>, <span class='number'>6</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_wday</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidDayOfWeek</span>)
}
}
<span class='string'>'Y'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits</span>(<span class='ident'>s</span>, <span class='number'>4</span>, <span class='number'>4</span>, <span class='bool-val'>false</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_year</span> <span class='op'>=</span> <span class='ident'>v</span> <span class='op'>-</span> <span class='number'>1900</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidYear</span>)
}
}
<span class='string'>'y'</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>s</span>, <span class='number'>1</span>, <span class='number'>2</span>, <span class='bool-val'>false</span>, <span class='number'>0</span>, <span class='number'>99</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> { <span class='ident'>tm</span>.<span class='ident'>tm_year</span> <span class='op'>=</span> <span class='ident'>v</span>; <span class='prelude-val'>Ok</span>(()) }
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidYear</span>)
}
}
<span class='string'>'Z'</span> <span class='op'>=></span> {
<span class='kw'>if</span> <span class='ident'>match_str</span>(<span class='ident'>s</span>, <span class='string'>"UTC"</span>) <span class='op'>||</span> <span class='ident'>match_str</span>(<span class='ident'>s</span>, <span class='string'>"GMT"</span>) {
<span class='ident'>tm</span>.<span class='ident'>tm_utcoff</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='prelude-val'>Ok</span>(())
} <span class='kw'>else</span> {
<span class='comment'>// It's odd, but to maintain compatibility with c's</span>
<span class='comment'>// strptime we ignore the timezone.</span>
<span class='kw'>for</span> (<span class='ident'>i</span>, <span class='ident'>ch</span>) <span class='kw'>in</span> <span class='ident'>s</span>.<span class='ident'>char_indices</span>() {
<span class='kw'>if</span> <span class='ident'>ch</span> <span class='op'>==</span> <span class='string'>' '</span> {
<span class='kw-2'>*</span><span class='ident'>s</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='ident'>s</span>[<span class='ident'>i</span>..];
<span class='kw'>return</span> <span class='prelude-val'>Ok</span>(())
}
}
<span class='kw-2'>*</span><span class='ident'>s</span> <span class='op'>=</span> <span class='string'>""</span>;
<span class='prelude-val'>Ok</span>(())
}
}
<span class='string'>'z'</span> <span class='op'>=></span> {
<span class='kw'>if</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'Z'</span>).<span class='ident'>is_ok</span>() {
<span class='ident'>tm</span>.<span class='ident'>tm_utcoff</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='prelude-val'>Ok</span>(())
} <span class='kw'>else</span> {
<span class='kw'>let</span> <span class='ident'>sign</span> <span class='op'>=</span> <span class='kw'>if</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'+'</span>).<span class='ident'>is_ok</span>() {<span class='number'>1</span>}
<span class='kw'>else</span> <span class='kw'>if</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'-'</span>).<span class='ident'>is_ok</span>() {<span class='op'>-</span><span class='number'>1</span>}
<span class='kw'>else</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidZoneOffset</span>) };
<span class='kw'>let</span> <span class='ident'>hours</span>;
<span class='kw'>let</span> <span class='ident'>minutes</span>;
<span class='kw'>match</span> <span class='ident'>match_digits</span>(<span class='ident'>s</span>, <span class='number'>2</span>, <span class='number'>2</span>, <span class='bool-val'>false</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>h</span>) <span class='op'>=></span> <span class='ident'>hours</span> <span class='op'>=</span> <span class='ident'>h</span>,
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidZoneOffset</span>)
}
<span class='comment'>// consume the colon if its present,</span>
<span class='comment'>// just ignore it otherwise</span>
<span class='kw'>let</span> _ <span class='op'>=</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>':'</span>);
<span class='kw'>match</span> <span class='ident'>match_digits</span>(<span class='ident'>s</span>, <span class='number'>2</span>, <span class='number'>2</span>, <span class='bool-val'>false</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>m</span>) <span class='op'>=></span> <span class='ident'>minutes</span> <span class='op'>=</span> <span class='ident'>m</span>,
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidZoneOffset</span>)
}
<span class='ident'>tm</span>.<span class='ident'>tm_utcoff</span> <span class='op'>=</span> <span class='ident'>sign</span> <span class='op'>*</span> (<span class='ident'>hours</span> <span class='op'>*</span> <span class='number'>60</span> <span class='op'>*</span> <span class='number'>60</span> <span class='op'>+</span> <span class='ident'>minutes</span> <span class='op'>*</span> <span class='number'>60</span>);
<span class='prelude-val'>Ok</span>(())
}
}
<span class='string'>'%'</span> <span class='op'>=></span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>, <span class='string'>'%'</span>),
<span class='ident'>ch</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidFormatSpecifier</span>(<span class='ident'>ch</span>))
}
}
<span class='kw'>fn</span> <span class='ident'>match_str</span>(<span class='ident'>s</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>needle</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>if</span> <span class='ident'>s</span>.<span class='ident'>starts_with</span>(<span class='ident'>needle</span>) {
<span class='kw-2'>*</span><span class='ident'>s</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='ident'>s</span>[<span class='ident'>needle</span>.<span class='ident'>len</span>()..];
<span class='bool-val'>true</span>
} <span class='kw'>else</span> {
<span class='bool-val'>false</span>
}
}
<span class='kw'>fn</span> <span class='ident'>match_strs</span>(<span class='ident'>ss</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>strs</span>: <span class='kw-2'>&</span>[(<span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>i32</span>)]) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>i32</span><span class='op'>></span> {
<span class='kw'>for</span> <span class='kw-2'>&</span>(<span class='ident'>needle</span>, <span class='ident'>value</span>) <span class='kw'>in</span> <span class='ident'>strs</span>.<span class='ident'>iter</span>() {
<span class='kw'>if</span> <span class='ident'>match_str</span>(<span class='ident'>ss</span>, <span class='ident'>needle</span>) {
<span class='kw'>return</span> <span class='prelude-val'>Some</span>(<span class='ident'>value</span>)
}
}
<span class='prelude-val'>None</span>
}
<span class='kw'>fn</span> <span class='ident'>match_digits</span>(<span class='ident'>ss</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>min_digits</span> : <span class='ident'>usize</span>, <span class='ident'>max_digits</span>: <span class='ident'>usize</span>, <span class='ident'>ws</span>: <span class='ident'>bool</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>i32</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='ident'>match_digits_i64</span>(<span class='ident'>ss</span>, <span class='ident'>min_digits</span>, <span class='ident'>max_digits</span>, <span class='ident'>ws</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>v</span> <span class='kw'>as</span> <span class='ident'>i32</span>),
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='kw'>fn</span> <span class='ident'>match_digits_i64</span>(<span class='ident'>ss</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>min_digits</span> : <span class='ident'>usize</span>, <span class='ident'>max_digits</span>: <span class='ident'>usize</span>, <span class='ident'>ws</span>: <span class='ident'>bool</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>i64</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>value</span> : <span class='ident'>i64</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>n</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>if</span> <span class='ident'>ws</span> {
<span class='kw'>let</span> <span class='ident'>s2</span> <span class='op'>=</span> <span class='ident'>ss</span>.<span class='ident'>trim_left_matches</span>(<span class='string'>" "</span>);
<span class='ident'>n</span> <span class='op'>=</span> <span class='ident'>ss</span>.<span class='ident'>len</span>() <span class='op'>-</span> <span class='ident'>s2</span>.<span class='ident'>len</span>();
<span class='kw'>if</span> <span class='ident'>n</span> <span class='op'>></span> <span class='ident'>max_digits</span> { <span class='kw'>return</span> <span class='prelude-val'>None</span> }
}
<span class='kw'>let</span> <span class='ident'>chars</span> <span class='op'>=</span> <span class='ident'>ss</span>[<span class='ident'>n</span>..].<span class='ident'>char_indices</span>();
<span class='kw'>for</span> (_, <span class='ident'>ch</span>) <span class='kw'>in</span> <span class='ident'>chars</span>.<span class='ident'>take</span>(<span class='ident'>max_digits</span> <span class='op'>-</span> <span class='ident'>n</span>) {
<span class='kw'>match</span> <span class='ident'>ch</span> {
<span class='string'>'0'</span> ... <span class='string'>'9'</span> <span class='op'>=></span> <span class='ident'>value</span> <span class='op'>=</span> <span class='ident'>value</span> <span class='op'>*</span> <span class='number'>10</span> <span class='op'>+</span> (<span class='ident'>ch</span> <span class='kw'>as</span> <span class='ident'>i64</span> <span class='op'>-</span> <span class='string'>'0'</span> <span class='kw'>as</span> <span class='ident'>i64</span>),
_ <span class='op'>=></span> <span class='kw'>break</span>,
}
<span class='ident'>n</span> <span class='op'>+=</span> <span class='number'>1</span>;
}
<span class='kw'>if</span> <span class='ident'>n</span> <span class='op'>>=</span> <span class='ident'>min_digits</span> <span class='op'>&&</span> <span class='ident'>n</span> <span class='op'><=</span> <span class='ident'>max_digits</span> {
<span class='kw-2'>*</span><span class='ident'>ss</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='ident'>ss</span>[<span class='ident'>n</span>..];
<span class='prelude-val'>Some</span>(<span class='ident'>value</span>)
} <span class='kw'>else</span> {
<span class='prelude-val'>None</span>
}
}
<span class='kw'>fn</span> <span class='ident'>match_fractional_seconds</span>(<span class='ident'>ss</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='ident'>i32</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>value</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>multiplier</span> <span class='op'>=</span> <span class='ident'>NSEC_PER_SEC</span> <span class='op'>/</span> <span class='number'>10</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>chars</span> <span class='op'>=</span> <span class='ident'>ss</span>.<span class='ident'>char_indices</span>();
<span class='kw'>let</span> <span class='ident'>orig</span> <span class='op'>=</span> <span class='kw-2'>*</span><span class='ident'>ss</span>;
<span class='kw'>for</span> (<span class='ident'>i</span>, <span class='ident'>ch</span>) <span class='kw'>in</span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>chars</span> {
<span class='kw-2'>*</span><span class='ident'>ss</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='ident'>orig</span>[<span class='ident'>i</span>..];
<span class='kw'>match</span> <span class='ident'>ch</span> {
<span class='string'>'0'</span> ... <span class='string'>'9'</span> <span class='op'>=></span> {
<span class='comment'>// This will drop digits after the nanoseconds place</span>
<span class='kw'>let</span> <span class='ident'>digit</span> <span class='op'>=</span> <span class='ident'>ch</span> <span class='kw'>as</span> <span class='ident'>i32</span> <span class='op'>-</span> <span class='string'>'0'</span> <span class='kw'>as</span> <span class='ident'>i32</span>;
<span class='ident'>value</span> <span class='op'>+=</span> <span class='ident'>digit</span> <span class='op'>*</span> <span class='ident'>multiplier</span>;
<span class='ident'>multiplier</span> <span class='op'>/=</span> <span class='number'>10</span>;
}
_ <span class='op'>=></span> <span class='kw'>break</span>
}
}
<span class='ident'>value</span>
}
<span class='kw'>fn</span> <span class='ident'>match_digits_in_range</span>(<span class='ident'>ss</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>&</span><span class='ident'>str</span>,
<span class='ident'>min_digits</span> : <span class='ident'>usize</span>, <span class='ident'>max_digits</span> : <span class='ident'>usize</span>,
<span class='ident'>ws</span>: <span class='ident'>bool</span>, <span class='ident'>min</span>: <span class='ident'>i32</span>, <span class='ident'>max</span>: <span class='ident'>i32</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>i32</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='ident'>before</span> <span class='op'>=</span> <span class='kw-2'>*</span><span class='ident'>ss</span>;
<span class='kw'>match</span> <span class='ident'>match_digits</span>(<span class='ident'>ss</span>, <span class='ident'>min_digits</span>, <span class='ident'>max_digits</span>, <span class='ident'>ws</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>val</span>) <span class='kw'>if</span> <span class='ident'>val</span> <span class='op'>>=</span> <span class='ident'>min</span> <span class='op'>&&</span> <span class='ident'>val</span> <span class='op'><=</span> <span class='ident'>max</span> <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>val</span>),
_ <span class='op'>=></span> { <span class='kw-2'>*</span><span class='ident'>ss</span> <span class='op'>=</span> <span class='ident'>before</span>; <span class='prelude-val'>None</span> }
}
}
<span class='kw'>fn</span> <span class='ident'>parse_char</span>(<span class='ident'>s</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>c</span>: <span class='ident'>char</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span>(), <span class='ident'>ParseError</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='ident'>s</span>.<span class='ident'>char_indices</span>().<span class='ident'>next</span>() {
<span class='prelude-val'>Some</span>((<span class='ident'>i</span>, <span class='ident'>c2</span>)) <span class='op'>=></span> {
<span class='kw'>if</span> <span class='ident'>c</span> <span class='op'>==</span> <span class='ident'>c2</span> {
<span class='kw-2'>*</span><span class='ident'>s</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='ident'>s</span>[<span class='ident'>i</span> <span class='op'>+</span> <span class='ident'>c2</span>.<span class='ident'>len_utf8</span>()..];
<span class='prelude-val'>Ok</span>(())
} <span class='kw'>else</span> {
<span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>UnexpectedCharacter</span>(<span class='ident'>c</span>, <span class='ident'>c2</span>))
}
}
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>::<span class='ident'>InvalidTime</span>),
}
}
</pre>
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