170 lines
7.3 KiB
HTML
170 lines
7.3 KiB
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<p class='location'><a href='index.html'>synstructure</a></p><script>window.sidebarCurrent = {name: 'unpretty_print', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<section id='main' class="content">
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<h1 class='fqn'><span class='in-band'>Function <a href='index.html'>synstructure</a>::<wbr><a class="fn" href=''>unpretty_print</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../src/synstructure/lib.rs.html#2215-2236' title='goto source code'>[src]</a></span></h1>
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<pre class='rust fn'>pub fn unpretty_print<T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a>>(ts: T) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></pre><div class='docblock'><p>Dumps an unpretty version of a tokenstream. Takes any type which implements
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<code>Display</code>.</p>
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<p>This is mostly useful for visualizing the output of a procedural macro, as
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it makes it marginally more readable. It is used in the implementation of
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<code>test_derive!</code> to unprettily print the output.</p>
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<h1 id="stability" class="section-header"><a href="#stability">Stability</a></h1>
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<p>The stability of the output of this function is not guaranteed. Do not
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assert that the output of this function does not change between minor
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versions.</p>
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<h1 id="example" class="section-header"><a href="#example">Example</a></h1>
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<pre class="rust rust-example-rendered">
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<span class="macro">assert_eq</span><span class="macro">!</span>(
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<span class="ident">synstructure</span>::<span class="ident">unpretty_print</span>(<span class="macro">quote</span><span class="macro">!</span> {
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<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">non_upper_case_globals</span>)]</span>
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<span class="kw">const</span> <span class="ident">_DERIVE_krate_Trait_FOR_A</span>: () <span class="op">=</span> {
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<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">krate</span>;
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<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">U</span><span class="op">></span> <span class="ident">krate</span>::<span class="ident">Trait</span> <span class="kw">for</span> <span class="ident">A</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">U</span><span class="op">></span>
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<span class="kw">where</span>
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<span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">U</span><span class="op">></span>: <span class="ident">krate</span>::<span class="ident">Trait</span>,
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<span class="ident">U</span>: <span class="ident">krate</span>::<span class="ident">Trait</span>
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{
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<span class="kw">fn</span> <span class="ident">a</span>() {}
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}
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};
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}),
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<span class="string">"# [
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allow (
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non_upper_case_globals )
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]
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const _DERIVE_krate_Trait_FOR_A : (
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)
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= {
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extern crate krate ;
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impl < T , U > krate :: Trait for A < T , U > where Option < U > : krate :: Trait , U : krate :: Trait {
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fn a (
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)
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{
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}
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}
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}
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;
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"</span>
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)</pre>
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