edlang/serde/macro.forward_to_deserialize_any.html
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(&lt;<span class="macro-nonterminal">$visitor</span>:ident: Visitor&lt;<span class="macro-nonterminal">$lifetime</span>:tt&gt;&gt; $(<span class="macro-nonterminal">$func</span>:ident)<span class="kw-2">*</span>) =&gt; { ... };
($(<span class="macro-nonterminal">$func</span>:ident)<span class="kw-2">*</span>) =&gt; { ... };
}</pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Helper macro when implementing the <code>Deserializer</code> part of a new data format
for Serde.</p>
<p>Some <a href="trait.Deserializer.html"><code>Deserializer</code></a> implementations for self-describing formats do not
care what hint the <a href="de/trait.Visitor.html"><code>Visitor</code></a> gives them, they just want to blindly call
the <a href="de/trait.Visitor.html"><code>Visitor</code></a> method corresponding to the data they can tell is in the
input. This requires repetitive implementations of all the <a href="trait.Deserializer.html"><code>Deserializer</code></a>
trait methods.</p>
<div class="example-wrap edition"><a href="#" class="tooltip" title="This example runs with edition 2021"></a><pre class="rust rust-example-rendered"><code><span class="attr">#[inline]
</span><span class="kw">fn </span>deserialize_bool&lt;V&gt;(<span class="self">self</span>, visitor: V) -&gt; <span class="prelude-ty">Result</span>&lt;V::Value, <span class="self">Self</span>::Error&gt;
<span class="kw">where
</span>V: Visitor&lt;<span class="lifetime">'de</span>&gt;,
{
<span class="self">self</span>.deserialize_any(visitor)
}</code></pre></div>
<p>The <code>forward_to_deserialize_any!</code> macro implements these simple forwarding
methods so that they forward directly to <a href="trait.Deserializer.html#tymethod.deserialize_any"><code>Deserializer::deserialize_any</code></a>.
You can choose which methods to forward.</p>
<div class="example-wrap edition"><a href="#" class="tooltip" title="This example runs with edition 2021"></a><pre class="rust rust-example-rendered"><code><span class="kw">impl</span>&lt;<span class="lifetime">'de</span>&gt; Deserializer&lt;<span class="lifetime">'de</span>&gt; <span class="kw">for </span>MyDeserializer {
<span class="kw">fn </span>deserialize_any&lt;V&gt;(<span class="self">self</span>, visitor: V) -&gt; <span class="prelude-ty">Result</span>&lt;V::Value, <span class="self">Self</span>::Error&gt;
<span class="kw">where
</span>V: Visitor&lt;<span class="lifetime">'de</span>&gt;,
{
<span class="comment">/* ... */
</span>}
<span class="macro">forward_to_deserialize_any!</span> {
bool i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
bytes byte_buf option unit unit_struct newtype_struct seq tuple
tuple_struct map <span class="kw">struct enum </span>identifier ignored_any
}
}</code></pre></div>
<p>The macro assumes the convention that your <code>Deserializer</code> lifetime parameter
is called <code>'de</code> and that the <code>Visitor</code> type parameters on each method are
called <code>V</code>. A different type parameter and a different lifetime can be
specified explicitly if necessary.</p>
<div class="example-wrap edition"><a href="#" class="tooltip" title="This example runs with edition 2021"></a><pre class="rust rust-example-rendered"><code><span class="macro">forward_to_deserialize_any!</span> {
&lt;W: Visitor&lt;<span class="lifetime">'q</span>&gt;&gt;
bool i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
bytes byte_buf option unit unit_struct newtype_struct seq tuple
tuple_struct map <span class="kw">struct enum </span>identifier ignored_any
}</code></pre></div>
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