<!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="Source to the Rust file `/Users/travis/.cargo/registry/src/github.com-1ecc6299db9ec823/num-traits-0.2.5/src/macros.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>macros.rs.html -- source</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 source"><!--[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></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"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><pre class="rust ">
<span class="comment">// not all are used in all features configurations</span>
<span class="attribute">#![<span class="ident">allow</span>(<span class="ident">unused</span>)]</span>
<span class="doccomment">/// Forward a method to an inherent method or a base trait method.</span>
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">forward</span> {
($( <span class="self">Self</span> :: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">method</span>:<span class="ident">ident</span> ( <span class="self">self</span> $( , <span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>:<span class="ident">ident</span> : <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ty</span>:<span class="ident">ty</span> )<span class="op">*</span> ) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ret</span>:<span class="ident">ty</span> ; )<span class="kw-2">*</span>)
<span class="op">=></span> {$(
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">method</span>(<span class="self">self</span> $( , <span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span> : <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ty</span> )<span class="op">*</span> ) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ret</span> {
<span class="self">Self</span>::<span class="macro-nonterminal">$</span><span class="macro-nonterminal">method</span>(<span class="self">self</span> $( , <span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span> )<span class="op">*</span> )
}
)<span class="kw-2">*</span>};
($( <span class="macro-nonterminal">$</span><span class="macro-nonterminal">base</span>:<span class="ident">ident</span> :: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">method</span>:<span class="ident">ident</span> ( <span class="self">self</span> $( , <span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>:<span class="ident">ident</span> : <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ty</span>:<span class="ident">ty</span> )<span class="op">*</span> ) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ret</span>:<span class="ident">ty</span> ; )<span class="kw-2">*</span>)
<span class="op">=></span> {$(
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">method</span>(<span class="self">self</span> $( , <span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span> : <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ty</span> )<span class="op">*</span> ) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ret</span> {
<span class="op"><</span><span class="self">Self</span> <span class="kw">as</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">base</span><span class="op">></span>::<span class="macro-nonterminal">$</span><span class="macro-nonterminal">method</span>(<span class="self">self</span> $( , <span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span> )<span class="op">*</span> )
}
)<span class="kw-2">*</span>};
($( <span class="macro-nonterminal">$</span><span class="macro-nonterminal">base</span>:<span class="ident">ident</span> :: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">method</span>:<span class="ident">ident</span> ( $( <span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>:<span class="ident">ident</span> : <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ty</span>:<span class="ident">ty</span> ),<span class="op">*</span> ) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ret</span>:<span class="ident">ty</span> ; )<span class="kw-2">*</span>)
<span class="op">=></span> {$(
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">method</span>( $( <span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span> : <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ty</span> ),<span class="op">*</span> ) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ret</span> {
<span class="op"><</span><span class="self">Self</span> <span class="kw">as</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">base</span><span class="op">></span>::<span class="macro-nonterminal">$</span><span class="macro-nonterminal">method</span>( $( <span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span> ),<span class="op">*</span> )
}
)<span class="kw-2">*</span>}
}
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">constant</span> {
($( <span class="macro-nonterminal">$</span><span class="macro-nonterminal">method</span>:<span class="ident">ident</span> () <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ret</span>:<span class="ident">expr</span> ; )<span class="kw-2">*</span>)
<span class="op">=></span> {$(
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">method</span>() <span class="op">-></span> <span class="self">Self</span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ret</span>
}
)<span class="kw-2">*</span>};
}
</pre>
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