<!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 of the Rust file `src/imm.rs`."><title>imm.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-b0742ba02757f159.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="juicebox_asm" data-themes="" data-resource-suffix="" data-rustdoc-version="1.83.0 (90b35a623 2024-11-26)" data-channel="1.83.0" data-search-js="search-f0d225181b97f9a4.js" data-settings-js="settings-805db61a62df4bd2.js" ><script src="../../static.files/storage-1d39b6787ed640ff.js"></script><script defer src="../../static.files/src-script-e66d777a5a92e9b2.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-f070b9041d14864c.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-0111fcff984fae8f.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer"></div><main><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">juicebox_asm/</div>imm.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers"> <a href="#1" id="1">1</a> <a href="#2" id="2">2</a> <a href="#3" id="3">3</a> <a href="#4" id="4">4</a> <a href="#5" id="5">5</a> <a href="#6" id="6">6</a> <a href="#7" id="7">7</a> <a href="#8" id="8">8</a> <a href="#9" id="9">9</a> <a href="#10" id="10">10</a> <a href="#11" id="11">11</a> <a href="#12" id="12">12</a> <a href="#13" id="13">13</a> <a href="#14" id="14">14</a> <a href="#15" id="15">15</a> <a href="#16" id="16">16</a> <a href="#17" id="17">17</a> <a href="#18" id="18">18</a> <a href="#19" id="19">19</a> <a href="#20" id="20">20</a> <a href="#21" id="21">21</a> <a href="#22" id="22">22</a> <a href="#23" id="23">23</a> <a href="#24" id="24">24</a> <a href="#25" id="25">25</a> <a href="#26" id="26">26</a> <a href="#27" id="27">27</a> <a href="#28" id="28">28</a> <a href="#29" id="29">29</a> <a href="#30" id="30">30</a> <a href="#31" id="31">31</a> <a href="#32" id="32">32</a> <a href="#33" id="33">33</a> <a href="#34" id="34">34</a> <a href="#35" id="35">35</a> <a href="#36" id="36">36</a> <a href="#37" id="37">37</a> <a href="#38" id="38">38</a> <a href="#39" id="39">39</a> <a href="#40" id="40">40</a> <a href="#41" id="41">41</a> <a href="#42" id="42">42</a> <a href="#43" id="43">43</a> <a href="#44" id="44">44</a> <a href="#45" id="45">45</a> <a href="#46" id="46">46</a> <a href="#47" id="47">47</a> <a href="#48" id="48">48</a> <a href="#49" id="49">49</a> <a href="#50" id="50">50</a> <a href="#51" id="51">51</a> <a href="#52" id="52">52</a> <a href="#53" id="53">53</a> <a href="#54" id="54">54</a> <a href="#55" id="55">55</a> <a href="#56" id="56">56</a> <a href="#57" id="57">57</a> <a href="#58" id="58">58</a> <a href="#59" id="59">59</a> <a href="#60" id="60">60</a> <a href="#61" id="61">61</a> <a href="#62" id="62">62</a> <a href="#63" id="63">63</a></pre></div><pre class="rust"><code><span class="doccomment">//! Definition of different immediate types which are used as input operands for various //! instructions. /// Trait to interact with immediate operands. </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">trait </span>Imm { <span class="doccomment">/// Get immediate operand as slice of bytes. </span><span class="kw">fn </span>bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8]; } <span class="macro">macro_rules!</span> impl_imm { (<span class="attr">#[<span class="macro-nonterminal">$doc</span>:meta] </span><span class="macro-nonterminal">$name</span>:ident, <span class="macro-nonterminal">$size</span>:expr, from: { $( <span class="macro-nonterminal">$from</span>:ty ),* $(,)<span class="question-mark">? </span>}) => { <span class="attr">#[<span class="macro-nonterminal">$doc</span>] </span><span class="kw">pub struct </span><span class="macro-nonterminal">$name</span>([u8; <span class="macro-nonterminal">$size</span>]); <span class="kw">impl </span>Imm <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ <span class="doccomment">/// Get immediate operand as slice of bytes. </span><span class="kw">fn </span>bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8] { <span class="kw-2">&</span><span class="self">self</span>.<span class="number">0 </span>} } $( <span class="kw">impl </span>From<<span class="macro-nonterminal">$from</span>> <span class="kw">for </span><span class="macro-nonterminal">$name </span>{ <span class="kw">fn </span>from(imm: <span class="macro-nonterminal">$from</span>) -> <span class="self">Self </span>{ <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0u8</span>; <span class="macro-nonterminal">$size</span>]; <span class="kw">let </span>imm = imm.to_ne_bytes(); buf[<span class="number">0</span>..imm.len()].copy_from_slice(<span class="kw-2">&</span>imm); <span class="macro-nonterminal">$name</span>(buf) } } )* } } <span class="macro">impl_imm!</span>( <span class="doccomment">/// Type representing an 8 bit immediate. </span>Imm8, <span class="number">1</span>, from: { u8, i8 } ); <span class="macro">impl_imm!</span>( <span class="doccomment">/// Type representing a 16 bit immediate. </span>Imm16, <span class="number">2</span>, from: { u16, i16, u8, i8 } ); <span class="macro">impl_imm!</span>( <span class="doccomment">/// Type representing a 32 bit immediate. </span>Imm32, <span class="number">4</span>, from: { u32, i32, u16, i16, u8, i8 } ); <span class="macro">impl_imm!</span>( <span class="doccomment">/// Type representing a 64 bit immediate. </span>Imm64, <span class="number">8</span>, from: { u64, i64, u32, i32, u16, i16, u8, i8, usize, isize } ); <span class="attr">#[cfg(test)] </span><span class="kw">mod </span>test { <span class="kw">use super</span>::<span class="kw-2">*</span>; <span class="kw">use </span>std::mem::size_of; <span class="attr">#[test] </span><span class="kw">fn </span>test_usize_isize() { <span class="comment">// Imm64 should not implementd from usize/isize if this fails. </span><span class="macro">assert_eq!</span>(size_of::<usize>(), size_of::<Imm64>()); <span class="macro">assert_eq!</span>(size_of::<isize>(), size_of::<Imm64>()); } } </code></pre></div></section></main></body></html>