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</pre><pre class="rust"><code><span class="attribute">#![allow(clippy::missing_docs_in_private_items)] </span><span class="comment">// TODO temporary
</span><span class="macro">macro_rules! </span>declare_structs {
($(<span class="macro-nonterminal">$t</span>:ident)<span class="kw-2">*</span>) =&gt; {$(
<span class="attribute">#[derive(Debug, Copy, Clone)]
</span><span class="kw">pub struct </span><span class="macro-nonterminal">$t</span>;
<span class="kw">impl </span><span class="macro-nonterminal">$t </span>{
<span class="kw">pub const fn </span>per&lt;T&gt;(<span class="self">self</span>, <span class="kw">_</span>: T) -&gt; &lt;(<span class="self">Self</span>, T) <span class="kw">as </span>Per&gt;::Output
<span class="kw">where
</span>(<span class="self">Self</span>, T): Per,
T: Copy,
{
&lt;(<span class="self">Self</span>, T)&gt;::VALUE
}
}
)<span class="kw-2">*</span>};
}
<span class="macro">declare_structs! </span>{
Nanosecond
Microsecond
Millisecond
Second
Minute
Hour
Day
Week
}
<span class="kw">mod </span>sealed {
<span class="kw">pub trait </span>Sealed {}
}
<span class="kw">pub trait </span>Per: sealed::Sealed {
<span class="kw">type </span>Output;
<span class="kw">const </span>VALUE: <span class="self">Self</span>::Output;
}
<span class="macro">macro_rules! </span>impl_per {
($(<span class="macro-nonterminal">$t</span>:ty : <span class="macro-nonterminal">$x</span>:ident <span class="kw">in </span><span class="macro-nonterminal">$y</span>:ident = <span class="macro-nonterminal">$val</span>:expr)<span class="kw-2">*</span>) =&gt; {$(
<span class="kw">impl </span>sealed::Sealed <span class="kw">for </span>(<span class="macro-nonterminal">$x</span>, <span class="macro-nonterminal">$y</span>) {}
<span class="kw">impl </span>Per <span class="kw">for </span>(<span class="macro-nonterminal">$x</span>, <span class="macro-nonterminal">$y</span>) {
<span class="kw">type </span>Output = <span class="macro-nonterminal">$t</span>;
<span class="kw">const </span>VALUE: <span class="macro-nonterminal">$t </span>= <span class="macro-nonterminal">$val</span>;
}
)<span class="kw-2">*</span>};
}
<span class="macro">impl_per! </span>{
u16: Nanosecond <span class="kw">in </span>Microsecond = <span class="number">1_000
</span>u32: Nanosecond <span class="kw">in </span>Millisecond = <span class="number">1_000_000
</span>u32: Nanosecond <span class="kw">in </span>Second = <span class="number">1_000_000_000
</span>u64: Nanosecond <span class="kw">in </span>Minute = <span class="number">60_000_000_000
</span>u64: Nanosecond <span class="kw">in </span>Hour = <span class="number">3_600_000_000_000
</span>u64: Nanosecond <span class="kw">in </span>Day = <span class="number">86_400_000_000_000
</span>u64: Nanosecond <span class="kw">in </span>Week = <span class="number">604_800_000_000_000
</span>u16: Microsecond <span class="kw">in </span>Millisecond = <span class="number">1_000
</span>u32: Microsecond <span class="kw">in </span>Second = <span class="number">1_000_000
</span>u32: Microsecond <span class="kw">in </span>Minute = <span class="number">60_000_000
</span>u32: Microsecond <span class="kw">in </span>Hour = <span class="number">3_600_000_000
</span>u64: Microsecond <span class="kw">in </span>Day = <span class="number">86_400_000_000
</span>u64: Microsecond <span class="kw">in </span>Week = <span class="number">604_800_000_000
</span>u16: Millisecond <span class="kw">in </span>Second = <span class="number">1_000
</span>u16: Millisecond <span class="kw">in </span>Minute = <span class="number">60_000
</span>u32: Millisecond <span class="kw">in </span>Hour = <span class="number">3_600_000
</span>u32: Millisecond <span class="kw">in </span>Day = <span class="number">86_400_000
</span>u32: Millisecond <span class="kw">in </span>Week = <span class="number">604_800_000
</span>u8: Second <span class="kw">in </span>Minute = <span class="number">60
</span>u16: Second <span class="kw">in </span>Hour = <span class="number">3_600
</span>u32: Second <span class="kw">in </span>Day = <span class="number">86_400
</span>u32: Second <span class="kw">in </span>Week = <span class="number">604_800
</span>u8: Minute <span class="kw">in </span>Hour = <span class="number">60
</span>u16: Minute <span class="kw">in </span>Day = <span class="number">1_440
</span>u16: Minute <span class="kw">in </span>Week = <span class="number">10_080
</span>u8: Hour <span class="kw">in </span>Day = <span class="number">24
</span>u8: Hour <span class="kw">in </span>Week = <span class="number">168
</span>u8: Day <span class="kw">in </span>Week = <span class="number">7
</span>}
</code></pre></div>
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