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- <!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="API documentation for the Rust `unpretty_print` fn in crate `synstructure`."><meta name="keywords" content="rust, rustlang, rust-lang, unpretty_print"><title>synstructure::unpretty_print - Rust</title><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../dark.css"><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script src="../storage.js"></script></head><body class="rustdoc fn"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><div class="sidebar-elems"><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></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><a id="settings-menu" href="../settings.html"><img src="../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><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'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../src/synstructure/lib.rs.html#2215-2236' title='goto source code'>[src]</a></span></h1><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
- <code>Display</code>.</p>
- <p>This is mostly useful for visualizing the output of a procedural macro, as
- it makes it marginally more readable. It is used in the implementation of
- <code>test_derive!</code> to unprettily print the output.</p>
- <h1 id="stability" class="section-header"><a href="#stability">Stability</a></h1>
- <p>The stability of the output of this function is not guaranteed. Do not
- assert that the output of this function does not change between minor
- versions.</p>
- <h1 id="example" class="section-header"><a href="#example">Example</a></h1>
- <pre class="rust rust-example-rendered">
- <span class="macro">assert_eq</span><span class="macro">!</span>(
- <span class="ident">synstructure</span>::<span class="ident">unpretty_print</span>(<span class="macro">quote</span><span class="macro">!</span> {
- <span class="attribute">#[<span class="ident">allow</span>(<span class="ident">non_upper_case_globals</span>)]</span>
- <span class="kw">const</span> <span class="ident">_DERIVE_krate_Trait_FOR_A</span>: () <span class="op">=</span> {
- <span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">krate</span>;
- <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>
- <span class="kw">where</span>
- <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>,
- <span class="ident">U</span>: <span class="ident">krate</span>::<span class="ident">Trait</span>
- {
- <span class="kw">fn</span> <span class="ident">a</span>() {}
- }
- };
- }),
- <span class="string">"# [
- allow (
- non_upper_case_globals )
- ]
- const _DERIVE_krate_Trait_FOR_A : (
- )
- = {
- extern crate krate ;
- impl < T , U > krate :: Trait for A < T , U > where Option < U > : krate :: Trait , U : krate :: Trait {
- fn a (
- )
- {
- }
- }
- }
- ;
- "</span>
- )</pre>
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