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| -rw-r--r-- | src/llvm_kaleidoscope_rs/codegen.rs.html | 275 | ||||
| -rw-r--r-- | src/llvm_kaleidoscope_rs/lexer.rs.html | 367 | ||||
| -rw-r--r-- | src/llvm_kaleidoscope_rs/lib.rs.html | 223 | ||||
| -rw-r--r-- | src/llvm_kaleidoscope_rs/llvm.rs.html | 1073 | ||||
| -rw-r--r-- | src/llvm_kaleidoscope_rs/parser.rs.html | 925 |
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diff --git a/src/llvm_kaleidoscope_rs/codegen.rs.html b/src/llvm_kaleidoscope_rs/codegen.rs.html new file mode 100644 index 0000000..bcaa770 --- /dev/null +++ b/src/llvm_kaleidoscope_rs/codegen.rs.html @@ -0,0 +1,275 @@ +<!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/codegen.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>codegen.rs - 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="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings"></script><script 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alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img src="../../wheel.svg" width="18" height="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1"> 1</span> +<span id="2"> 2</span> +<span id="3"> 3</span> +<span id="4"> 4</span> +<span id="5"> 5</span> +<span id="6"> 6</span> +<span id="7"> 7</span> +<span id="8"> 8</span> +<span id="9"> 9</span> +<span id="10"> 10</span> +<span id="11"> 11</span> +<span id="12"> 12</span> +<span id="13"> 13</span> +<span id="14"> 14</span> +<span id="15"> 15</span> +<span id="16"> 16</span> +<span id="17"> 17</span> +<span id="18"> 18</span> +<span id="19"> 19</span> +<span id="20"> 20</span> +<span id="21"> 21</span> +<span id="22"> 22</span> +<span id="23"> 23</span> +<span id="24"> 24</span> +<span id="25"> 25</span> +<span id="26"> 26</span> +<span id="27"> 27</span> +<span id="28"> 28</span> +<span id="29"> 29</span> +<span id="30"> 30</span> +<span id="31"> 31</span> +<span id="32"> 32</span> +<span id="33"> 33</span> +<span id="34"> 34</span> +<span id="35"> 35</span> +<span id="36"> 36</span> +<span id="37"> 37</span> +<span id="38"> 38</span> +<span id="39"> 39</span> +<span id="40"> 40</span> +<span id="41"> 41</span> +<span id="42"> 42</span> +<span id="43"> 43</span> +<span id="44"> 44</span> +<span id="45"> 45</span> +<span id="46"> 46</span> +<span id="47"> 47</span> +<span id="48"> 48</span> +<span id="49"> 49</span> +<span id="50"> 50</span> +<span id="51"> 51</span> +<span id="52"> 52</span> +<span id="53"> 53</span> +<span id="54"> 54</span> +<span id="55"> 55</span> +<span id="56"> 56</span> +<span id="57"> 57</span> +<span id="58"> 58</span> +<span id="59"> 59</span> +<span id="60"> 60</span> +<span id="61"> 61</span> +<span id="62"> 62</span> +<span id="63"> 63</span> +<span id="64"> 64</span> +<span id="65"> 65</span> +<span id="66"> 66</span> +<span id="67"> 67</span> +<span id="68"> 68</span> +<span id="69"> 69</span> +<span id="70"> 70</span> +<span id="71"> 71</span> +<span id="72"> 72</span> +<span id="73"> 73</span> +<span id="74"> 74</span> +<span id="75"> 75</span> +<span id="76"> 76</span> +<span id="77"> 77</span> +<span id="78"> 78</span> +<span id="79"> 79</span> +<span id="80"> 80</span> +<span id="81"> 81</span> +<span id="82"> 82</span> +<span id="83"> 83</span> +<span id="84"> 84</span> +<span id="85"> 85</span> +<span id="86"> 86</span> +<span id="87"> 87</span> +<span id="88"> 88</span> +<span id="89"> 89</span> +<span id="90"> 90</span> +<span id="91"> 91</span> +<span id="92"> 92</span> +<span id="93"> 93</span> +<span id="94"> 94</span> +<span id="95"> 95</span> +<span id="96"> 96</span> +<span id="97"> 97</span> +<span id="98"> 98</span> +<span id="99"> 99</span> +<span id="100">100</span> +<span id="101">101</span> +<span id="102">102</span> +<span id="103">103</span> +<span id="104">104</span> +<span id="105">105</span> +<span id="106">106</span> +<span id="107">107</span> +<span id="108">108</span> +<span id="109">109</span> +<span id="110">110</span> +<span id="111">111</span> +<span id="112">112</span> +<span id="113">113</span> +<span id="114">114</span> +<span id="115">115</span> +<span id="116">116</span> +<span id="117">117</span> +<span id="118">118</span> +<span id="119">119</span> +<span id="120">120</span> +<span id="121">121</span> +<span id="122">122</span> +<span id="123">123</span> +<span id="124">124</span> +<span id="125">125</span> +<span id="126">126</span> +<span id="127">127</span> +<span id="128">128</span> +<span id="129">129</span> +<span id="130">130</span> +<span id="131">131</span> +<span id="132">132</span> +<span id="133">133</span> +<span id="134">134</span> +<span id="135">135</span> +</pre><pre class="rust"> +<span class="kw">use</span> <span class="ident">std::collections::HashMap</span>; + +<span class="kw">use</span> <span class="kw">crate</span><span class="ident">::llvm</span>::{<span class="ident">Builder</span>, <span class="ident">FnValue</span>, <span class="ident">Module</span>, <span class="ident">Value</span>}; +<span class="kw">use</span> <span class="kw">crate</span><span class="ident">::parser</span>::{<span class="ident">ExprAST</span>, <span class="ident">FunctionAST</span>, <span class="ident">PrototypeAST</span>}; +<span class="kw">use</span> <span class="kw">crate</span><span class="ident">::Either</span>; + +<span class="kw">type</span> <span class="ident">CodegenResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="op">=</span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">String</span><span class="op">></span>; + +<span class="doccomment">/// Code generator from kaleidoscope AST to LLVM IR.</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Codegen</span><span class="op"><</span><span class="lifetime">'llvm</span>, <span class="lifetime">'a</span><span class="op">></span> { + <span class="ident">module</span>: <span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="ident">Module</span>, + <span class="ident">builder</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">Builder</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>, +} + +<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'llvm</span>, <span class="lifetime">'a</span><span class="op">></span> <span class="ident">Codegen</span><span class="op"><</span><span class="lifetime">'llvm</span>, <span class="lifetime">'a</span><span class="op">></span> { + <span class="doccomment">/// Compile either a [`PrototypeAST`] or a [`FunctionAST`] into the LLVM `module`.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">compile</span>( + <span class="ident">module</span>: <span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="ident">Module</span>, + <span class="ident">compilee</span>: <span class="ident">Either</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">PrototypeAST</span>, <span class="kw-2">&</span><span class="ident">FunctionAST</span><span class="op">></span>, + ) <span class="op">-</span><span class="op">></span> <span class="ident">CodegenResult</span><span class="op"><</span><span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">cg</span> <span class="op">=</span> <span class="ident">Codegen</span> { + <span class="ident">module</span>, + <span class="ident">builder</span>: <span class="kw-2">&</span><span class="ident">Builder::with_ctx</span>(<span class="ident">module</span>), + }; + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">variables</span> <span class="op">=</span> <span class="ident">HashMap::new</span>(); + + <span class="kw">match</span> <span class="ident">compilee</span> { + <span class="ident">Either::A</span>(<span class="ident">proto</span>) <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">cg</span>.<span class="ident">codegen_prototype</span>(<span class="ident">proto</span>)), + <span class="ident">Either::B</span>(<span class="ident">func</span>) <span class="op">=</span><span class="op">></span> <span class="ident">cg</span>.<span class="ident">codegen_function</span>(<span class="ident">func</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">variables</span>), + } + } + + <span class="kw">fn</span> <span class="ident">codegen_expr</span>( + <span class="kw-2">&</span><span class="self">self</span>, + <span class="ident">expr</span>: <span class="kw-2">&</span><span class="ident">ExprAST</span>, + <span class="ident">named_values</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">HashMap</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="ident">str</span>, <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span><span class="op">></span>, + ) <span class="op">-</span><span class="op">></span> <span class="ident">CodegenResult</span><span class="op"><</span><span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span><span class="op">></span> { + <span class="kw">match</span> <span class="ident">expr</span> { + <span class="ident">ExprAST::Number</span>(<span class="ident">num</span>) <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">module</span>.<span class="ident">type_f64</span>().<span class="ident">const_f64</span>(<span class="kw-2">*</span><span class="ident">num</span>)), + <span class="ident">ExprAST::Variable</span>(<span class="ident">name</span>) <span class="op">=</span><span class="op">></span> <span class="kw">match</span> <span class="ident">named_values</span>.<span class="ident">get</span>(<span class="ident">name</span>.<span class="ident">as_str</span>()) { + <span class="prelude-val">Some</span>(<span class="ident">value</span>) <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="kw-2">*</span><span class="ident">value</span>), + <span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="string">"Unknown variable name"</span>.<span class="ident">into</span>()), + }, + <span class="ident">ExprAST::Binary</span>(<span class="ident">binop</span>, <span class="ident">lhs</span>, <span class="ident">rhs</span>) <span class="op">=</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">l</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">codegen_expr</span>(<span class="ident">lhs</span>, <span class="ident">named_values</span>)<span class="question-mark">?</span>; + <span class="kw">let</span> <span class="ident">r</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">codegen_expr</span>(<span class="ident">rhs</span>, <span class="ident">named_values</span>)<span class="question-mark">?</span>; + + <span class="kw">match</span> <span class="ident">binop</span> { + <span class="string">'+'</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">fadd</span>(<span class="ident">l</span>, <span class="ident">r</span>)), + <span class="string">'-'</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">fsub</span>(<span class="ident">l</span>, <span class="ident">r</span>)), + <span class="string">'*'</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">fmul</span>(<span class="ident">l</span>, <span class="ident">r</span>)), + <span class="string">'<'</span> <span class="op">=</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">fcmpult</span>(<span class="ident">l</span>, <span class="ident">r</span>); + <span class="comment">// Turn bool into f64.</span> + <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">uitofp</span>(<span class="ident">res</span>, <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">type_f64</span>())) + } + <span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="string">"invalid binary operator"</span>.<span class="ident">into</span>()), + } + } + <span class="ident">ExprAST::Call</span>(<span class="ident">callee</span>, <span class="ident">args</span>) <span class="op">=</span><span class="op">></span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">get_fn</span>(<span class="ident">callee</span>) { + <span class="prelude-val">Some</span>(<span class="ident">callee</span>) <span class="op">=</span><span class="op">></span> { + <span class="kw">if</span> <span class="ident">callee</span>.<span class="ident">args</span>() <span class="op">!</span><span class="op">=</span> <span class="ident">args</span>.<span class="ident">len</span>() { + <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="string">"Incorrect # arguments passed"</span>.<span class="ident">into</span>()); + } + + <span class="comment">// Generate code for function argument expressions.</span> + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">args</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Value</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span><span class="op">></span> <span class="op">=</span> <span class="ident">args</span> + .<span class="ident">iter</span>() + .<span class="ident">map</span>(<span class="op">|</span><span class="ident">arg</span><span class="op">|</span> <span class="self">self</span>.<span class="ident">codegen_expr</span>(<span class="ident">arg</span>, <span class="ident">named_values</span>)) + .<span class="ident">collect</span>::<span class="op"><</span><span class="ident">CodegenResult</span><span class="op"><</span><span class="kw">_</span><span class="op">></span><span class="op">></span>()<span class="question-mark">?</span>; + + <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">call</span>(<span class="ident">callee</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">args</span>)) + } + <span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="string">"Unknown function referenced"</span>.<span class="ident">into</span>()), + }, + } + } + + <span class="kw">fn</span> <span class="ident">codegen_prototype</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">PrototypeAST</span>(<span class="ident">name</span>, <span class="ident">args</span>): <span class="kw-2">&</span><span class="ident">PrototypeAST</span>) <span class="op">-</span><span class="op">></span> <span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">type_f64</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">type_f64</span>(); + + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">doubles</span> <span class="op">=</span> <span class="ident">Vec::new</span>(); + <span class="ident">doubles</span>.<span class="ident">resize</span>(<span class="ident">args</span>.<span class="ident">len</span>(), <span class="ident">type_f64</span>); + + <span class="comment">// Build the function type: fn(f64, f64, ..) -> f64</span> + <span class="kw">let</span> <span class="ident">ft</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">type_fn</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">doubles</span>, <span class="ident">type_f64</span>); + + <span class="comment">// Create the function declaration.</span> + <span class="kw">let</span> <span class="ident">f</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">add_fn</span>(<span class="ident">name</span>, <span class="ident">ft</span>); + + <span class="comment">// Set the names of the function arguments.</span> + <span class="kw">for</span> <span class="ident">idx</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">f</span>.<span class="ident">args</span>() { + <span class="ident">f</span>.<span class="ident">arg</span>(<span class="ident">idx</span>).<span class="ident">set_name</span>(<span class="kw-2">&</span><span class="ident">args</span>[<span class="ident">idx</span>]); + } + + <span class="ident">f</span> + } + + <span class="kw">fn</span> <span class="ident">codegen_function</span>( + <span class="kw-2">&</span><span class="self">self</span>, + <span class="ident">FunctionAST</span>(<span class="ident">proto</span>, <span class="ident">body</span>): <span class="kw-2">&</span><span class="ident">FunctionAST</span>, + <span class="ident">named_values</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">HashMap</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="ident">str</span>, <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span><span class="op">></span>, + ) <span class="op">-</span><span class="op">></span> <span class="ident">CodegenResult</span><span class="op"><</span><span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">the_function</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">get_fn</span>(<span class="kw-2">&</span><span class="ident">proto</span>.<span class="number">0</span>) { + <span class="prelude-val">Some</span>(<span class="ident">f</span>) <span class="op">=</span><span class="op">></span> <span class="ident">f</span>, + <span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> <span class="self">self</span>.<span class="ident">codegen_prototype</span>(<span class="ident">proto</span>), + }; + + <span class="kw">if</span> <span class="ident">the_function</span>.<span class="ident">basic_blocks</span>() <span class="op">></span> <span class="number">0</span> { + <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="string">"Function cannot be redefined."</span>.<span class="ident">into</span>()); + } + + <span class="comment">// Create entry basic block to insert code.</span> + <span class="kw">let</span> <span class="ident">bb</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">module</span>.<span class="ident">append_basic_block</span>(<span class="ident">the_function</span>); + <span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">pos_at_end</span>(<span class="ident">bb</span>); + + <span class="comment">// New scope, clear the map with the function args.</span> + <span class="ident">named_values</span>.<span class="ident">clear</span>(); + + <span class="comment">// Update the map with the current functions args.</span> + <span class="kw">for</span> <span class="ident">idx</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">the_function</span>.<span class="ident">args</span>() { + <span class="kw">let</span> <span class="ident">arg</span> <span class="op">=</span> <span class="ident">the_function</span>.<span class="ident">arg</span>(<span class="ident">idx</span>); + <span class="ident">named_values</span>.<span class="ident">insert</span>(<span class="ident">arg</span>.<span class="ident">get_name</span>(), <span class="ident">arg</span>); + } + + <span class="comment">// Codegen function body.</span> + <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">ret</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">codegen_expr</span>(<span class="ident">body</span>, <span class="ident">named_values</span>) { + <span class="self">self</span>.<span class="ident">builder</span>.<span class="ident">ret</span>(<span class="ident">ret</span>); + <span class="macro">assert!</span>(<span class="ident">the_function</span>.<span class="ident">verify</span>()); + <span class="prelude-val">Ok</span>(<span class="ident">the_function</span>) + } <span class="kw">else</span> { + <span class="macro">todo!</span>(<span class="string">"Failed to codegen function body, erase from module!"</span>); + } + } +} +</pre></div> +</section><section id="search" class="content hidden"></section><div id="rustdoc-vars" data-root-path="../../" data-current-crate="llvm_kaleidoscope_rs" 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\ No newline at end of file diff --git a/src/llvm_kaleidoscope_rs/lexer.rs.html b/src/llvm_kaleidoscope_rs/lexer.rs.html new file mode 100644 index 0000000..3524648 --- /dev/null +++ b/src/llvm_kaleidoscope_rs/lexer.rs.html @@ -0,0 +1,367 @@ +<!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/lexer.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lexer.rs - 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="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings"></script><script 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alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img src="../../wheel.svg" width="18" height="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1"> 1</span> +<span id="2"> 2</span> +<span id="3"> 3</span> +<span id="4"> 4</span> +<span id="5"> 5</span> +<span id="6"> 6</span> +<span id="7"> 7</span> +<span id="8"> 8</span> +<span id="9"> 9</span> +<span id="10"> 10</span> +<span id="11"> 11</span> +<span 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id="163">163</span> +<span id="164">164</span> +<span id="165">165</span> +<span id="166">166</span> +<span id="167">167</span> +<span id="168">168</span> +<span id="169">169</span> +<span id="170">170</span> +<span id="171">171</span> +<span id="172">172</span> +<span id="173">173</span> +<span id="174">174</span> +<span id="175">175</span> +<span id="176">176</span> +<span id="177">177</span> +<span id="178">178</span> +<span id="179">179</span> +<span id="180">180</span> +<span id="181">181</span> +</pre><pre class="rust"> +<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span> +<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">Token</span> { + <span class="ident">Eof</span>, + <span class="ident">Def</span>, + <span class="ident">Extern</span>, + <span class="ident">Identifier</span>(<span class="ident">String</span>), + <span class="ident">Number</span>(<span class="ident">f64</span>), + <span class="ident">Char</span>(<span class="ident">char</span>), +} + +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Lexer</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> +<span class="kw">where</span> + <span class="ident">I</span>: <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">char</span><span class="op">></span>, +{ + <span class="ident">input</span>: <span class="ident">I</span>, + <span class="ident">last_char</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">char</span><span class="op">></span>, +} + +<span class="kw">impl</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> <span class="ident">Lexer</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> +<span class="kw">where</span> + <span class="ident">I</span>: <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">char</span><span class="op">></span>, +{ + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="kw-2">mut</span> <span class="ident">input</span>: <span class="ident">I</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Lexer</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">last_char</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">next</span>(); + <span class="ident">Lexer</span> { <span class="ident">input</span>, <span class="ident">last_char</span> } + } + + <span class="kw">fn</span> <span class="ident">step</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">char</span><span class="op">></span> { + <span class="self">self</span>.<span class="ident">last_char</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">input</span>.<span class="ident">next</span>(); + <span class="self">self</span>.<span class="ident">last_char</span> + } + + <span class="doccomment">/// Lex and return the next token.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement `int gettok();` from the tutorial.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">gettok</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Token</span> { + <span class="comment">// Eat up whitespaces.</span> + <span class="kw">while</span> <span class="macro">matches!</span>(<span class="self">self</span>.<span class="ident">last_char</span>, <span class="prelude-val">Some</span>(<span class="ident">c</span>) <span class="kw">if</span> <span class="ident">c</span>.<span class="ident">is_ascii_whitespace</span>()) { + <span class="self">self</span>.<span class="ident">step</span>(); + } + + <span class="comment">// Unpack last char or return EOF.</span> + <span class="kw">let</span> <span class="ident">last_char</span> <span class="op">=</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">c</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">last_char</span> { + <span class="ident">c</span> + } <span class="kw">else</span> { + <span class="kw">return</span> <span class="ident">Token::Eof</span>; + }; + + <span class="comment">// Identifier: [a-zA-Z][a-zA-Z0-9]*</span> + <span class="kw">if</span> <span class="ident">last_char</span>.<span class="ident">is_ascii_alphabetic</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">ident</span> <span class="op">=</span> <span class="ident">String::new</span>(); + <span class="ident">ident</span>.<span class="ident">push</span>(<span class="ident">last_char</span>); + + <span class="kw">while</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">c</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">step</span>() { + <span class="kw">if</span> <span class="ident">c</span>.<span class="ident">is_ascii_alphanumeric</span>() { + <span class="ident">ident</span>.<span class="ident">push</span>(<span class="ident">c</span>) + } <span class="kw">else</span> { + <span class="kw">break</span>; + } + } + + <span class="kw">match</span> <span class="ident">ident</span>.<span class="ident">as_ref</span>() { + <span class="string">"def"</span> <span class="op">=</span><span class="op">></span> <span class="kw">return</span> <span class="ident">Token::Def</span>, + <span class="string">"extern"</span> <span class="op">=</span><span class="op">></span> <span class="kw">return</span> <span class="ident">Token::Extern</span>, + <span class="kw">_</span> <span class="op">=</span><span class="op">></span> {} + } + + <span class="kw">return</span> <span class="ident">Token::Identifier</span>(<span class="ident">ident</span>); + } + + <span class="comment">// Number: [0-9.]+</span> + <span class="kw">if</span> <span class="ident">last_char</span>.<span class="ident">is_ascii_digit</span>() <span class="op">|</span><span class="op">|</span> <span class="ident">last_char</span> <span class="op">=</span><span class="op">=</span> <span class="string">'.'</span> { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">num</span> <span class="op">=</span> <span class="ident">String::new</span>(); + <span class="ident">num</span>.<span class="ident">push</span>(<span class="ident">last_char</span>); + + <span class="kw">while</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">c</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">step</span>() { + <span class="kw">if</span> <span class="ident">c</span>.<span class="ident">is_ascii_digit</span>() <span class="op">|</span><span class="op">|</span> <span class="ident">c</span> <span class="op">=</span><span class="op">=</span> <span class="string">'.'</span> { + <span class="ident">num</span>.<span class="ident">push</span>(<span class="ident">c</span>) + } <span class="kw">else</span> { + <span class="kw">break</span>; + } + } + + <span class="kw">let</span> <span class="ident">num</span>: <span class="ident">f64</span> <span class="op">=</span> <span class="ident">num</span>.<span class="ident">parse</span>().<span class="ident">unwrap_or_default</span>(); + <span class="kw">return</span> <span class="ident">Token::Number</span>(<span class="ident">num</span>); + } + + <span class="comment">// Eat up comment.</span> + <span class="kw">if</span> <span class="ident">last_char</span> <span class="op">=</span><span class="op">=</span> <span class="string">'#'</span> { + <span class="kw">loop</span> { + <span class="kw">match</span> <span class="self">self</span>.<span class="ident">step</span>() { + <span class="prelude-val">Some</span>(<span class="ident">c</span>) <span class="kw">if</span> <span class="ident">c</span> <span class="op">=</span><span class="op">=</span> <span class="string">'\r'</span> <span class="op">|</span><span class="op">|</span> <span class="ident">c</span> <span class="op">=</span><span class="op">=</span> <span class="string">'\n'</span> <span class="op">=</span><span class="op">></span> <span class="kw">return</span> <span class="self">self</span>.<span class="ident">gettok</span>(), + <span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> <span class="kw">return</span> <span class="ident">Token::Eof</span>, + <span class="kw">_</span> <span class="op">=</span><span class="op">></span> { <span class="comment">/* consume comment */</span> } + } + } + } + + <span class="comment">// Advance last char and return currently last char.</span> + <span class="self">self</span>.<span class="ident">step</span>(); + <span class="ident">Token::Char</span>(<span class="ident">last_char</span>) + } +} + +<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> +<span class="kw">mod</span> <span class="ident">test</span> { + <span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">Lexer</span>, <span class="ident">Token</span>}; + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">test_identifier</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lex</span> <span class="op">=</span> <span class="ident">Lexer::new</span>(<span class="string">"a b c"</span>.<span class="ident">chars</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"a"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"b"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"c"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Eof</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">test_keyword</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lex</span> <span class="op">=</span> <span class="ident">Lexer::new</span>(<span class="string">"def extern"</span>.<span class="ident">chars</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Def</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Extern</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Eof</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">test_number</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lex</span> <span class="op">=</span> <span class="ident">Lexer::new</span>(<span class="string">"12.34"</span>.<span class="ident">chars</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Number</span>(<span class="number">12.34f64</span>), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Eof</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lex</span> <span class="op">=</span> <span class="ident">Lexer::new</span>(<span class="string">" 1.0 2.0 3.0"</span>.<span class="ident">chars</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Number</span>(<span class="number">1.0f64</span>), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Number</span>(<span class="number">2.0f64</span>), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Number</span>(<span class="number">3.0f64</span>), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Eof</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lex</span> <span class="op">=</span> <span class="ident">Lexer::new</span>(<span class="string">"12.34.56"</span>.<span class="ident">chars</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Number</span>(<span class="number">0f64</span>), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Eof</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">test_comment</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lex</span> <span class="op">=</span> <span class="ident">Lexer::new</span>(<span class="string">"# some comment"</span>.<span class="ident">chars</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Eof</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lex</span> <span class="op">=</span> <span class="ident">Lexer::new</span>(<span class="string">"abc # some comment \n xyz"</span>.<span class="ident">chars</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"abc"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"xyz"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Eof</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">test_chars</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lex</span> <span class="op">=</span> <span class="ident">Lexer::new</span>(<span class="string">"a+b-c"</span>.<span class="ident">chars</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"a"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Char</span>(<span class="string">'+'</span>), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"b"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Char</span>(<span class="string">'-'</span>), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"c"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Eof</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">test_whitespaces</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lex</span> <span class="op">=</span> <span class="ident">Lexer::new</span>(<span class="string">" +a b c! "</span>.<span class="ident">chars</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Char</span>(<span class="string">'+'</span>), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"a"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"b"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"c"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Char</span>(<span class="string">'!'</span>), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Eof</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lex</span> <span class="op">=</span> <span class="ident">Lexer::new</span>(<span class="string">"\n a \n\r b \r \n c \r\r \n "</span>.<span class="ident">chars</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"a"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"b"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Identifier</span>(<span class="string">"c"</span>.<span class="ident">into</span>()), <span class="ident">lex</span>.<span class="ident">gettok</span>()); + <span class="macro">assert_eq!</span>(<span class="ident">Token::Eof</span>, <span class="ident">lex</span>.<span class="ident">gettok</span>()); + } +} +</pre></div> +</section><section id="search" class="content hidden"></section><div id="rustdoc-vars" data-root-path="../../" data-current-crate="llvm_kaleidoscope_rs" data-search-index-js="../../search-index.js" data-search-js="../../search.js"></div><script src="../../main.js"></script><script src="../../source-script.js"></script><script src="../../source-files.js"></script></body></html>
\ No newline at end of file diff --git a/src/llvm_kaleidoscope_rs/lib.rs.html b/src/llvm_kaleidoscope_rs/lib.rs.html new file mode 100644 index 0000000..d2fcdb6 --- /dev/null +++ b/src/llvm_kaleidoscope_rs/lib.rs.html @@ -0,0 +1,223 @@ +<!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/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.rs - 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="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings"></script><script 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alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img src="../../wheel.svg" width="18" height="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1"> 1</span> +<span id="2"> 2</span> +<span id="3"> 3</span> +<span id="4"> 4</span> +<span id="5"> 5</span> +<span id="6"> 6</span> +<span id="7"> 7</span> +<span id="8"> 8</span> +<span id="9"> 9</span> +<span id="10"> 10</span> +<span id="11"> 11</span> +<span id="12"> 12</span> +<span id="13"> 13</span> +<span id="14"> 14</span> +<span id="15"> 15</span> +<span id="16"> 16</span> +<span id="17"> 17</span> +<span id="18"> 18</span> +<span id="19"> 19</span> +<span id="20"> 20</span> +<span id="21"> 21</span> +<span id="22"> 22</span> +<span id="23"> 23</span> +<span id="24"> 24</span> +<span id="25"> 25</span> +<span id="26"> 26</span> +<span id="27"> 27</span> +<span id="28"> 28</span> +<span id="29"> 29</span> +<span id="30"> 30</span> +<span id="31"> 31</span> +<span id="32"> 32</span> +<span id="33"> 33</span> +<span id="34"> 34</span> +<span id="35"> 35</span> +<span id="36"> 36</span> +<span id="37"> 37</span> +<span id="38"> 38</span> +<span id="39"> 39</span> +<span id="40"> 40</span> +<span id="41"> 41</span> +<span id="42"> 42</span> +<span id="43"> 43</span> +<span id="44"> 44</span> +<span id="45"> 45</span> +<span id="46"> 46</span> +<span id="47"> 47</span> +<span id="48"> 48</span> +<span id="49"> 49</span> +<span id="50"> 50</span> +<span id="51"> 51</span> +<span id="52"> 52</span> +<span id="53"> 53</span> +<span id="54"> 54</span> +<span id="55"> 55</span> +<span id="56"> 56</span> +<span id="57"> 57</span> +<span id="58"> 58</span> +<span id="59"> 59</span> +<span id="60"> 60</span> +<span id="61"> 61</span> +<span id="62"> 62</span> +<span id="63"> 63</span> +<span id="64"> 64</span> +<span id="65"> 65</span> +<span id="66"> 66</span> +<span id="67"> 67</span> +<span id="68"> 68</span> +<span id="69"> 69</span> +<span id="70"> 70</span> +<span id="71"> 71</span> +<span id="72"> 72</span> +<span id="73"> 73</span> +<span id="74"> 74</span> +<span id="75"> 75</span> +<span id="76"> 76</span> +<span id="77"> 77</span> +<span id="78"> 78</span> +<span id="79"> 79</span> +<span id="80"> 80</span> +<span id="81"> 81</span> +<span id="82"> 82</span> +<span id="83"> 83</span> +<span id="84"> 84</span> +<span id="85"> 85</span> +<span id="86"> 86</span> +<span id="87"> 87</span> +<span id="88"> 88</span> +<span id="89"> 89</span> +<span id="90"> 90</span> +<span id="91"> 91</span> +<span id="92"> 92</span> +<span id="93"> 93</span> +<span id="94"> 94</span> +<span id="95"> 95</span> +<span id="96"> 96</span> +<span id="97"> 97</span> +<span id="98"> 98</span> +<span id="99"> 99</span> +<span id="100">100</span> +<span id="101">101</span> +<span id="102">102</span> +<span id="103">103</span> +<span id="104">104</span> +<span id="105">105</span> +<span id="106">106</span> +<span id="107">107</span> +<span id="108">108</span> +<span id="109">109</span> +</pre><pre class="rust"> +<span class="kw">use</span> <span class="ident">std::convert::TryFrom</span>; + +<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">codegen</span>; +<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">lexer</span>; +<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">llvm</span>; +<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">parser</span>; + +<span class="doccomment">/// Fixed size of [`SmallCStr`] including the trailing `\0` byte.</span> +<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">SMALL_STR_SIZE</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="number">16</span>; + +<span class="doccomment">/// Small C string on the stack with fixed size [`SMALL_STR_SIZE`].</span> +<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">SmallCStr</span>([<span class="ident">u8</span>; <span class="ident">SMALL_STR_SIZE</span>]); + +<span class="kw">impl</span> <span class="ident">SmallCStr</span> { + <span class="doccomment">/// Create a new C string from `src`.</span> + <span class="doccomment">/// Returns [`None`] if `src` exceeds the fixed size or contains any `\0` bytes.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">AsRef</span><span class="op"><</span>[<span class="ident">u8</span>]<span class="op">></span><span class="op">></span>(<span class="ident">src</span>: <span class="kw-2">&</span><span class="ident">T</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">SmallCStr</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> <span class="ident">src</span>.<span class="ident">as_ref</span>(); + <span class="kw">let</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">src</span>.<span class="ident">len</span>(); + + <span class="comment">// Check for \0 bytes.</span> + <span class="kw">let</span> <span class="ident">contains_null</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="op">!</span><span class="ident">libc::memchr</span>(<span class="ident">src</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), <span class="number">0</span>, <span class="ident">len</span>).<span class="ident">is_null</span>() }; + + <span class="kw">if</span> <span class="ident">contains_null</span> <span class="op">|</span><span class="op">|</span> <span class="ident">len</span> <span class="op">></span> <span class="ident">SMALL_STR_SIZE</span> <span class="op">-</span> <span class="number">1</span> { + <span class="prelude-val">None</span> + } <span class="kw">else</span> { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">dest</span> <span class="op">=</span> [<span class="number">0</span>; <span class="ident">SMALL_STR_SIZE</span>]; + <span class="ident">dest</span>[..<span class="ident">len</span>].<span class="ident">copy_from_slice</span>(<span class="ident">src</span>); + <span class="prelude-val">Some</span>(<span class="ident">SmallCStr</span>(<span class="ident">dest</span>)) + } + } + + <span class="doccomment">/// Return pointer to C string.</span> + <span class="kw">pub</span> <span class="kw">const</span> <span class="kw">fn</span> <span class="ident">as_ptr</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">libc::c_char</span> { + <span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>() + } +} + +<span class="kw">impl</span> <span class="ident">TryFrom</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span><span class="op">></span> <span class="kw">for</span> <span class="ident">SmallCStr</span> { + <span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> (); + + <span class="kw">fn</span> <span class="ident">try_from</span>(<span class="ident">value</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span>, <span class="self">Self</span><span class="ident">::Error</span><span class="op">></span> { + <span class="ident">SmallCStr::new</span>(<span class="kw-2">&</span><span class="ident">value</span>).<span class="ident">ok_or</span>(()) + } +} + +<span class="doccomment">/// Either type, for APIs accepting two types.</span> +<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">Either</span><span class="op"><</span><span class="ident">A</span>, <span class="ident">B</span><span class="op">></span> { + <span class="ident">A</span>(<span class="ident">A</span>), + <span class="ident">B</span>(<span class="ident">B</span>), +} + +<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> +<span class="kw">mod</span> <span class="ident">test</span> { + <span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">SmallCStr</span>, <span class="ident">SMALL_STR_SIZE</span>}; + <span class="kw">use</span> <span class="ident">std::convert::TryInto</span>; + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">test_create</span>() { + <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> <span class="string">"\x30\x31\x32\x33"</span>; + <span class="kw">let</span> <span class="ident">scs</span> <span class="op">=</span> <span class="ident">SmallCStr::new</span>(<span class="kw-2">&</span><span class="ident">src</span>).<span class="ident">unwrap</span>(); + <span class="macro">assert_eq!</span>(<span class="kw-2">&</span><span class="ident">scs</span>.<span class="number">0</span>[..<span class="number">5</span>], <span class="kw-2">&</span>[<span class="number">0x30</span>, <span class="number">0x31</span>, <span class="number">0x32</span>, <span class="number">0x33</span>, <span class="number">0x00</span>]); + + <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> <span class="string">b"abcd1234"</span>; + <span class="kw">let</span> <span class="ident">scs</span> <span class="op">=</span> <span class="ident">SmallCStr::new</span>(<span class="kw-2">&</span><span class="ident">src</span>).<span class="ident">unwrap</span>(); + <span class="macro">assert_eq!</span>( + <span class="kw-2">&</span><span class="ident">scs</span>.<span class="number">0</span>[..<span class="number">9</span>], + <span class="kw-2">&</span>[<span class="number">0x61</span>, <span class="number">0x62</span>, <span class="number">0x63</span>, <span class="number">0x64</span>, <span class="number">0x31</span>, <span class="number">0x32</span>, <span class="number">0x33</span>, <span class="number">0x34</span>, <span class="number">0x00</span>] + ); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">test_contain_null</span>() { + <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> <span class="string">"\x30\x00\x32\x33"</span>; + <span class="kw">let</span> <span class="ident">scs</span> <span class="op">=</span> <span class="ident">SmallCStr::new</span>(<span class="kw-2">&</span><span class="ident">src</span>); + <span class="macro">assert_eq!</span>(<span class="ident">scs</span>, <span class="prelude-val">None</span>); + + <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> <span class="string">"\x30\x31\x32\x33\x00"</span>; + <span class="kw">let</span> <span class="ident">scs</span> <span class="op">=</span> <span class="ident">SmallCStr::new</span>(<span class="kw-2">&</span><span class="ident">src</span>); + <span class="macro">assert_eq!</span>(<span class="ident">scs</span>, <span class="prelude-val">None</span>); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">test_too_large</span>() { + <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> (<span class="number">0</span>..<span class="ident">SMALL_STR_SIZE</span>).<span class="ident">map</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="string">'a'</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(); + <span class="kw">let</span> <span class="ident">scs</span> <span class="op">=</span> <span class="ident">SmallCStr::new</span>(<span class="kw-2">&</span><span class="ident">src</span>); + <span class="macro">assert_eq!</span>(<span class="ident">scs</span>, <span class="prelude-val">None</span>); + + <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> (<span class="number">0</span>..<span class="ident">SMALL_STR_SIZE</span> <span class="op">+</span> <span class="number">10</span>).<span class="ident">map</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="string">'a'</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(); + <span class="kw">let</span> <span class="ident">scs</span> <span class="op">=</span> <span class="ident">SmallCStr::new</span>(<span class="kw-2">&</span><span class="ident">src</span>); + <span class="macro">assert_eq!</span>(<span class="ident">scs</span>, <span class="prelude-val">None</span>); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">test_try_into</span>() { + <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> <span class="string">"\x30\x31\x32\x33"</span>; + <span class="kw">let</span> <span class="ident">scs</span>: <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">SmallCStr</span>, ()<span class="op">></span> <span class="op">=</span> <span class="ident">src</span>.<span class="ident">try_into</span>(); + <span class="macro">assert!</span>(<span class="ident">scs</span>.<span class="ident">is_ok</span>()); + + <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> (<span class="number">0</span>..<span class="ident">SMALL_STR_SIZE</span>).<span class="ident">map</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="string">'a'</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(); + <span class="kw">let</span> <span class="ident">scs</span>: <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">SmallCStr</span>, ()<span class="op">></span> <span class="op">=</span> <span class="ident">src</span>.<span class="ident">as_str</span>().<span class="ident">try_into</span>(); + <span class="macro">assert!</span>(<span class="ident">scs</span>.<span class="ident">is_err</span>()); + + <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> (<span class="number">0</span>..<span class="ident">SMALL_STR_SIZE</span> <span class="op">+</span> <span class="number">10</span>).<span class="ident">map</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="string">'a'</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(); + <span class="kw">let</span> <span class="ident">scs</span>: <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">SmallCStr</span>, ()<span class="op">></span> <span class="op">=</span> <span class="ident">src</span>.<span class="ident">as_str</span>().<span class="ident">try_into</span>(); + <span class="macro">assert!</span>(<span class="ident">scs</span>.<span class="ident">is_err</span>()); + } +} +</pre></div> +</section><section id="search" class="content hidden"></section><div id="rustdoc-vars" data-root-path="../../" data-current-crate="llvm_kaleidoscope_rs" data-search-index-js="../../search-index.js" data-search-js="../../search.js"></div><script src="../../main.js"></script><script src="../../source-script.js"></script><script src="../../source-files.js"></script></body></html>
\ No newline at end of file diff --git a/src/llvm_kaleidoscope_rs/llvm.rs.html b/src/llvm_kaleidoscope_rs/llvm.rs.html new file mode 100644 index 0000000..2da418a --- /dev/null +++ b/src/llvm_kaleidoscope_rs/llvm.rs.html @@ -0,0 +1,1073 @@ +<!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/llvm.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>llvm.rs - 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="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings"></script><script 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alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img src="../../wheel.svg" width="18" height="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1"> 1</span> +<span id="2"> 2</span> +<span id="3"> 3</span> +<span id="4"> 4</span> +<span id="5"> 5</span> +<span id="6"> 6</span> +<span id="7"> 7</span> +<span id="8"> 8</span> +<span id="9"> 9</span> +<span id="10"> 10</span> +<span id="11"> 11</span> +<span id="12"> 12</span> +<span id="13"> 13</span> +<span id="14"> 14</span> +<span id="15"> 15</span> +<span id="16"> 16</span> +<span id="17"> 17</span> +<span id="18"> 18</span> +<span id="19"> 19</span> +<span id="20"> 20</span> +<span id="21"> 21</span> +<span id="22"> 22</span> +<span id="23"> 23</span> +<span id="24"> 24</span> +<span id="25"> 25</span> +<span id="26"> 26</span> +<span id="27"> 27</span> +<span id="28"> 28</span> +<span id="29"> 29</span> +<span id="30"> 30</span> +<span id="31"> 31</span> +<span id="32"> 32</span> +<span id="33"> 33</span> +<span id="34"> 34</span> +<span id="35"> 35</span> +<span id="36"> 36</span> +<span id="37"> 37</span> +<span id="38"> 38</span> +<span id="39"> 39</span> +<span id="40"> 40</span> +<span id="41"> 41</span> +<span id="42"> 42</span> +<span id="43"> 43</span> +<span id="44"> 44</span> +<span id="45"> 45</span> +<span id="46"> 46</span> +<span id="47"> 47</span> +<span id="48"> 48</span> +<span id="49"> 49</span> +<span id="50"> 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+<span id="89"> 89</span> +<span id="90"> 90</span> +<span id="91"> 91</span> +<span id="92"> 92</span> +<span id="93"> 93</span> +<span id="94"> 94</span> +<span id="95"> 95</span> +<span id="96"> 96</span> +<span id="97"> 97</span> +<span id="98"> 98</span> +<span id="99"> 99</span> +<span id="100">100</span> +<span id="101">101</span> +<span id="102">102</span> +<span id="103">103</span> +<span id="104">104</span> +<span id="105">105</span> +<span id="106">106</span> +<span id="107">107</span> +<span id="108">108</span> +<span id="109">109</span> +<span id="110">110</span> +<span id="111">111</span> +<span id="112">112</span> +<span id="113">113</span> +<span id="114">114</span> +<span id="115">115</span> +<span id="116">116</span> +<span id="117">117</span> +<span id="118">118</span> +<span id="119">119</span> +<span id="120">120</span> +<span id="121">121</span> +<span id="122">122</span> +<span id="123">123</span> +<span id="124">124</span> +<span id="125">125</span> +<span id="126">126</span> +<span id="127">127</span> +<span id="128">128</span> +<span id="129">129</span> +<span id="130">130</span> +<span id="131">131</span> +<span id="132">132</span> +<span id="133">133</span> +<span id="134">134</span> +<span id="135">135</span> +<span id="136">136</span> +<span id="137">137</span> +<span id="138">138</span> +<span id="139">139</span> +<span id="140">140</span> +<span id="141">141</span> +<span id="142">142</span> +<span id="143">143</span> +<span id="144">144</span> +<span id="145">145</span> +<span id="146">146</span> +<span id="147">147</span> +<span id="148">148</span> +<span id="149">149</span> +<span id="150">150</span> +<span id="151">151</span> +<span id="152">152</span> +<span id="153">153</span> +<span id="154">154</span> +<span id="155">155</span> +<span id="156">156</span> +<span id="157">157</span> +<span id="158">158</span> +<span id="159">159</span> +<span id="160">160</span> +<span id="161">161</span> +<span id="162">162</span> +<span id="163">163</span> +<span id="164">164</span> +<span id="165">165</span> +<span id="166">166</span> +<span id="167">167</span> +<span id="168">168</span> +<span id="169">169</span> +<span id="170">170</span> +<span id="171">171</span> +<span id="172">172</span> +<span id="173">173</span> +<span id="174">174</span> +<span id="175">175</span> +<span id="176">176</span> +<span id="177">177</span> +<span id="178">178</span> +<span id="179">179</span> +<span id="180">180</span> +<span id="181">181</span> +<span id="182">182</span> +<span id="183">183</span> +<span id="184">184</span> +<span id="185">185</span> +<span id="186">186</span> +<span id="187">187</span> +<span id="188">188</span> +<span id="189">189</span> +<span id="190">190</span> +<span id="191">191</span> +<span id="192">192</span> +<span id="193">193</span> +<span id="194">194</span> +<span id="195">195</span> +<span id="196">196</span> +<span id="197">197</span> +<span id="198">198</span> +<span id="199">199</span> +<span id="200">200</span> +<span id="201">201</span> +<span id="202">202</span> +<span id="203">203</span> +<span id="204">204</span> +<span id="205">205</span> +<span id="206">206</span> +<span id="207">207</span> +<span id="208">208</span> +<span id="209">209</span> +<span id="210">210</span> +<span id="211">211</span> +<span id="212">212</span> +<span id="213">213</span> +<span id="214">214</span> +<span id="215">215</span> +<span id="216">216</span> +<span id="217">217</span> +<span id="218">218</span> +<span id="219">219</span> +<span id="220">220</span> +<span id="221">221</span> +<span id="222">222</span> +<span id="223">223</span> +<span id="224">224</span> +<span id="225">225</span> +<span id="226">226</span> +<span id="227">227</span> +<span id="228">228</span> +<span id="229">229</span> +<span id="230">230</span> +<span id="231">231</span> +<span id="232">232</span> +<span id="233">233</span> +<span id="234">234</span> +<span id="235">235</span> +<span id="236">236</span> +<span id="237">237</span> +<span id="238">238</span> +<span id="239">239</span> +<span id="240">240</span> +<span id="241">241</span> +<span id="242">242</span> +<span id="243">243</span> +<span id="244">244</span> +<span id="245">245</span> +<span id="246">246</span> +<span id="247">247</span> +<span id="248">248</span> +<span id="249">249</span> +<span id="250">250</span> +<span id="251">251</span> +<span id="252">252</span> +<span id="253">253</span> +<span id="254">254</span> +<span id="255">255</span> +<span id="256">256</span> +<span id="257">257</span> +<span id="258">258</span> +<span id="259">259</span> +<span id="260">260</span> +<span id="261">261</span> +<span id="262">262</span> +<span id="263">263</span> +<span id="264">264</span> +<span id="265">265</span> +<span id="266">266</span> +<span id="267">267</span> +<span id="268">268</span> +<span id="269">269</span> +<span id="270">270</span> +<span id="271">271</span> +<span id="272">272</span> +<span id="273">273</span> +<span id="274">274</span> +<span id="275">275</span> +<span id="276">276</span> +<span id="277">277</span> +<span id="278">278</span> +<span id="279">279</span> +<span id="280">280</span> +<span id="281">281</span> +<span id="282">282</span> +<span id="283">283</span> +<span id="284">284</span> +<span id="285">285</span> +<span id="286">286</span> +<span id="287">287</span> +<span id="288">288</span> +<span id="289">289</span> +<span id="290">290</span> +<span id="291">291</span> +<span id="292">292</span> +<span id="293">293</span> +<span id="294">294</span> +<span id="295">295</span> +<span id="296">296</span> +<span id="297">297</span> +<span id="298">298</span> +<span id="299">299</span> +<span id="300">300</span> +<span id="301">301</span> +<span id="302">302</span> +<span id="303">303</span> +<span id="304">304</span> +<span id="305">305</span> +<span id="306">306</span> +<span id="307">307</span> +<span id="308">308</span> +<span id="309">309</span> +<span id="310">310</span> +<span id="311">311</span> +<span id="312">312</span> +<span id="313">313</span> +<span id="314">314</span> +<span id="315">315</span> +<span id="316">316</span> +<span id="317">317</span> +<span id="318">318</span> +<span id="319">319</span> +<span id="320">320</span> +<span id="321">321</span> +<span id="322">322</span> +<span id="323">323</span> +<span id="324">324</span> +<span id="325">325</span> +<span id="326">326</span> +<span id="327">327</span> +<span id="328">328</span> +<span id="329">329</span> +<span id="330">330</span> +<span id="331">331</span> +<span id="332">332</span> +<span id="333">333</span> +<span id="334">334</span> +<span id="335">335</span> +<span id="336">336</span> +<span id="337">337</span> +<span id="338">338</span> +<span id="339">339</span> +<span id="340">340</span> +<span id="341">341</span> +<span id="342">342</span> +<span id="343">343</span> +<span id="344">344</span> +<span id="345">345</span> +<span id="346">346</span> +<span id="347">347</span> +<span id="348">348</span> +<span id="349">349</span> +<span id="350">350</span> +<span id="351">351</span> +<span id="352">352</span> +<span id="353">353</span> +<span id="354">354</span> +<span id="355">355</span> +<span id="356">356</span> +<span id="357">357</span> +<span id="358">358</span> +<span id="359">359</span> +<span id="360">360</span> +<span id="361">361</span> +<span id="362">362</span> +<span id="363">363</span> +<span id="364">364</span> +<span id="365">365</span> +<span id="366">366</span> +<span id="367">367</span> +<span id="368">368</span> +<span id="369">369</span> +<span id="370">370</span> +<span id="371">371</span> +<span id="372">372</span> +<span id="373">373</span> +<span id="374">374</span> +<span id="375">375</span> +<span id="376">376</span> +<span id="377">377</span> +<span id="378">378</span> +<span id="379">379</span> +<span id="380">380</span> +<span id="381">381</span> +<span id="382">382</span> +<span id="383">383</span> +<span id="384">384</span> +<span id="385">385</span> +<span id="386">386</span> +<span id="387">387</span> +<span id="388">388</span> +<span id="389">389</span> +<span id="390">390</span> +<span id="391">391</span> +<span id="392">392</span> +<span id="393">393</span> +<span id="394">394</span> +<span id="395">395</span> +<span id="396">396</span> +<span id="397">397</span> +<span id="398">398</span> +<span id="399">399</span> +<span id="400">400</span> +<span id="401">401</span> +<span id="402">402</span> +<span id="403">403</span> +<span id="404">404</span> +<span id="405">405</span> +<span id="406">406</span> +<span id="407">407</span> +<span id="408">408</span> +<span id="409">409</span> +<span id="410">410</span> +<span id="411">411</span> +<span id="412">412</span> +<span id="413">413</span> +<span id="414">414</span> +<span id="415">415</span> +<span id="416">416</span> +<span id="417">417</span> +<span id="418">418</span> +<span id="419">419</span> +<span id="420">420</span> +<span id="421">421</span> +<span id="422">422</span> +<span id="423">423</span> +<span id="424">424</span> +<span id="425">425</span> +<span id="426">426</span> +<span id="427">427</span> +<span id="428">428</span> +<span id="429">429</span> +<span id="430">430</span> +<span id="431">431</span> +<span id="432">432</span> +<span id="433">433</span> +<span id="434">434</span> +<span id="435">435</span> +<span id="436">436</span> +<span id="437">437</span> +<span id="438">438</span> +<span id="439">439</span> +<span id="440">440</span> +<span id="441">441</span> +<span id="442">442</span> +<span id="443">443</span> +<span id="444">444</span> +<span id="445">445</span> +<span id="446">446</span> +<span id="447">447</span> +<span id="448">448</span> +<span id="449">449</span> +<span id="450">450</span> +<span id="451">451</span> +<span id="452">452</span> +<span id="453">453</span> +<span id="454">454</span> +<span id="455">455</span> +<span id="456">456</span> +<span id="457">457</span> +<span id="458">458</span> +<span id="459">459</span> +<span id="460">460</span> +<span id="461">461</span> +<span id="462">462</span> +<span id="463">463</span> +<span id="464">464</span> +<span id="465">465</span> +<span id="466">466</span> +<span id="467">467</span> +<span id="468">468</span> +<span id="469">469</span> +<span id="470">470</span> +<span id="471">471</span> +<span id="472">472</span> +<span id="473">473</span> +<span id="474">474</span> +<span id="475">475</span> +<span id="476">476</span> +<span id="477">477</span> +<span id="478">478</span> +<span id="479">479</span> +<span id="480">480</span> +<span id="481">481</span> +<span id="482">482</span> +<span id="483">483</span> +<span id="484">484</span> +<span id="485">485</span> +<span id="486">486</span> +<span id="487">487</span> +<span id="488">488</span> +<span id="489">489</span> +<span id="490">490</span> +<span id="491">491</span> +<span id="492">492</span> +<span id="493">493</span> +<span id="494">494</span> +<span id="495">495</span> +<span id="496">496</span> +<span id="497">497</span> +<span id="498">498</span> +<span id="499">499</span> +<span id="500">500</span> +<span id="501">501</span> +<span id="502">502</span> +<span id="503">503</span> +<span id="504">504</span> +<span id="505">505</span> +<span id="506">506</span> +<span id="507">507</span> +<span id="508">508</span> +<span id="509">509</span> +<span id="510">510</span> +<span id="511">511</span> +<span id="512">512</span> +<span id="513">513</span> +<span id="514">514</span> +<span id="515">515</span> +<span id="516">516</span> +<span id="517">517</span> +<span id="518">518</span> +<span id="519">519</span> +<span id="520">520</span> +<span id="521">521</span> +<span id="522">522</span> +<span id="523">523</span> +<span id="524">524</span> +<span id="525">525</span> +<span id="526">526</span> +<span id="527">527</span> +<span id="528">528</span> +<span id="529">529</span> +<span id="530">530</span> +<span id="531">531</span> +<span id="532">532</span> +<span id="533">533</span> +<span id="534">534</span> +</pre><pre class="rust"> +<span class="doccomment">//! Safe wrapper around the LLVM C API.</span> +<span class="doccomment">//!</span> +<span class="doccomment">//! References returned from the LLVM API are tied to the `'llvm` lifetime which is bound to the</span> +<span class="doccomment">//! context where the objects are created in.</span> +<span class="doccomment">//! We do not offer wrappers to remove or delete any objects in the context and therefore all the</span> +<span class="doccomment">//! references will be valid for the liftime of the context.</span> + +<span class="kw">use</span> <span class="ident">llvm_sys::analysis</span>::{<span class="ident">LLVMVerifierFailureAction</span>, <span class="ident">LLVMVerifyFunction</span>}; +<span class="kw">use</span> <span class="ident">llvm_sys::core</span>::{ + <span class="ident">LLVMAddFunction</span>, <span class="ident">LLVMAppendBasicBlockInContext</span>, <span class="ident">LLVMBuildFAdd</span>, <span class="ident">LLVMBuildFCmp</span>, <span class="ident">LLVMBuildFMul</span>, + <span class="ident">LLVMBuildFSub</span>, <span class="ident">LLVMBuildRet</span>, <span class="ident">LLVMBuildUIToFP</span>, <span class="ident">LLVMConstReal</span>, <span class="ident">LLVMContextCreate</span>, + <span class="ident">LLVMContextDispose</span>, <span class="ident">LLVMCountBasicBlocks</span>, <span class="ident">LLVMCountParams</span>, <span class="ident">LLVMCreateBuilderInContext</span>, + <span class="ident">LLVMDisposeBuilder</span>, <span class="ident">LLVMDisposeModule</span>, <span class="ident">LLVMDoubleTypeInContext</span>, <span class="ident">LLVMDumpModule</span>, <span class="ident">LLVMDumpType</span>, + <span class="ident">LLVMDumpValue</span>, <span class="ident">LLVMGetNamedFunction</span>, <span class="ident">LLVMGetParam</span>, <span class="ident">LLVMGetReturnType</span>, <span class="ident">LLVMGetTypeKind</span>, + <span class="ident">LLVMGetValueKind</span>, <span class="ident">LLVMGetValueName2</span>, <span class="ident">LLVMModuleCreateWithNameInContext</span>, + <span class="ident">LLVMPositionBuilderAtEnd</span>, <span class="ident">LLVMSetValueName2</span>, <span class="ident">LLVMTypeOf</span>, +}; +<span class="kw">use</span> <span class="ident">llvm_sys::prelude</span>::{ + <span class="ident">LLVMBasicBlockRef</span>, <span class="ident">LLVMBool</span>, <span class="ident">LLVMBuilderRef</span>, <span class="ident">LLVMContextRef</span>, <span class="ident">LLVMModuleRef</span>, <span class="ident">LLVMTypeRef</span>, + <span class="ident">LLVMValueRef</span>, +}; +<span class="kw">use</span> <span class="ident">llvm_sys</span>::{<span class="ident">LLVMRealPredicate</span>, <span class="ident">LLVMTypeKind</span>, <span class="ident">LLVMValueKind</span>}; + +<span class="kw">use</span> <span class="ident">std::convert::TryFrom</span>; +<span class="kw">use</span> <span class="ident">std::ffi::CStr</span>; +<span class="kw">use</span> <span class="ident">std::marker::PhantomData</span>; +<span class="kw">use</span> <span class="ident">std::ops::Deref</span>; + +<span class="kw">use</span> <span class="kw">crate</span><span class="ident">::SmallCStr</span>; + +<span class="comment">// Definition of LLVM C API functions using our `repr(transparent)` types.</span> +<span class="kw">extern</span> <span class="string">"C"</span> { + <span class="kw">fn</span> <span class="ident">LLVMFunctionType</span>( + <span class="ident">ReturnType</span>: <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>, + <span class="ident">ParamTypes</span>: <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>, + <span class="ident">ParamCount</span>: <span class="ident">::libc::c_uint</span>, + <span class="ident">IsVarArg</span>: <span class="ident">LLVMBool</span>, + ) <span class="op">-</span><span class="op">></span> <span class="ident">LLVMTypeRef</span>; + <span class="kw">fn</span> <span class="ident">LLVMBuildCall2</span>( + <span class="ident">arg1</span>: <span class="ident">LLVMBuilderRef</span>, + <span class="ident">arg2</span>: <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>, + <span class="ident">Fn</span>: <span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>, + <span class="ident">Args</span>: <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>, + <span class="ident">NumArgs</span>: <span class="ident">::libc::c_uint</span>, + <span class="ident">Name</span>: <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">::libc::c_char</span>, + ) <span class="op">-</span><span class="op">></span> <span class="ident">LLVMValueRef</span>; +} + +<span class="comment">// ====================</span> +<span class="comment">// Module / Context</span> +<span class="comment">// ====================</span> + +<span class="doccomment">/// Wrapper for a LLVM Module with its own LLVM Context.</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Module</span> { + <span class="ident">ctx</span>: <span class="ident">LLVMContextRef</span>, + <span class="ident">module</span>: <span class="ident">LLVMModuleRef</span>, +} + +<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> <span class="ident">Module</span> { + <span class="doccomment">/// Create a new Module instance.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if creating the context or the module fails.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { + <span class="kw">let</span> (<span class="ident">ctx</span>, <span class="ident">module</span>) <span class="op">=</span> <span class="kw">unsafe</span> { + <span class="kw">let</span> <span class="ident">c</span> <span class="op">=</span> <span class="ident">LLVMContextCreate</span>(); + <span class="kw">let</span> <span class="ident">m</span> <span class="op">=</span> <span class="ident">LLVMModuleCreateWithNameInContext</span>(<span class="string">b"module\0"</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), <span class="ident">c</span>); + <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">c</span>.<span class="ident">is_null</span>() <span class="op">&&</span> <span class="op">!</span><span class="ident">m</span>.<span class="ident">is_null</span>()); + (<span class="ident">c</span>, <span class="ident">m</span>) + }; + + <span class="ident">Module</span> { <span class="ident">ctx</span>, <span class="ident">module</span> } + } + + <span class="doccomment">/// Dump LLVM IR emitted into the Module to stdout.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dump</span>(<span class="kw-2">&</span><span class="self">self</span>) { + <span class="kw">unsafe</span> { <span class="ident">LLVMDumpModule</span>(<span class="self">self</span>.<span class="ident">module</span>) }; + } + + <span class="doccomment">/// Get a type reference representing a `f64` float.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">type_f64</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">type_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMDoubleTypeInContext</span>(<span class="self">self</span>.<span class="ident">ctx</span>) }; + <span class="ident">Type::new</span>(<span class="ident">type_ref</span>) + } + + <span class="doccomment">/// Get a type reference representing a `fn(args) -> ret` function.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">type_fn</span>(<span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="self">self</span>, <span class="ident">args</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> [<span class="ident">Type</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>], <span class="ident">ret</span>: <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">type_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { + <span class="ident">LLVMFunctionType</span>( + <span class="ident">ret</span>, + <span class="ident">args</span>.<span class="ident">as_mut_ptr</span>(), + <span class="ident">args</span>.<span class="ident">len</span>() <span class="kw">as</span> <span class="ident">libc::c_uint</span>, + <span class="number">0</span>, <span class="comment">/* IsVarArg */</span> + ) + }; + <span class="ident">Type::new</span>(<span class="ident">type_ref</span>) + } + + <span class="doccomment">/// Add a function with the given `name` and `fn_type` to the module and return a value</span> + <span class="doccomment">/// reference representing the function.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer or `name` could not be converted to a</span> + <span class="doccomment">/// [`SmallCStr`].</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add_fn</span>(<span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="self">self</span>, <span class="ident">name</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">fn_type</span>: <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="macro">debug_assert_eq!</span>( + <span class="ident">fn_type</span>.<span class="ident">kind</span>(), + <span class="ident">LLVMTypeKind::LLVMFunctionTypeKind</span>, + <span class="string">"Expected a function type when adding a function!"</span> + ); + + <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">SmallCStr::try_from</span>(<span class="ident">name</span>) + .<span class="ident">expect</span>(<span class="string">"Failed to convert 'name' argument to small C string!"</span>); + + <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMAddFunction</span>(<span class="self">self</span>.<span class="ident">module</span>, <span class="ident">name</span>.<span class="ident">as_ptr</span>(), <span class="ident">fn_type</span>.<span class="number">0</span>) }; + <span class="ident">FnValue::new</span>(<span class="ident">value_ref</span>) + } + + <span class="doccomment">/// Get a function value reference to the function with the given `name` if it was previously</span> + <span class="doccomment">/// added to the module with [`add_fn`][Module::add_fn].</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if `name` could not be converted to a [`SmallCStr`].</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_fn</span>(<span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="self">self</span>, <span class="ident">name</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">SmallCStr::try_from</span>(<span class="ident">name</span>) + .<span class="ident">expect</span>(<span class="string">"Failed to convert 'name' argument to small C string!"</span>); + + <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMGetNamedFunction</span>(<span class="self">self</span>.<span class="ident">module</span>, <span class="ident">name</span>.<span class="ident">as_ptr</span>()) }; + + (<span class="op">!</span><span class="ident">value_ref</span>.<span class="ident">is_null</span>()).<span class="ident">then</span>(<span class="op">|</span><span class="op">|</span> <span class="ident">FnValue::new</span>(<span class="ident">value_ref</span>)) + } + + <span class="doccomment">/// Append a Basic Block to the end of the function referenced by the value reference</span> + <span class="doccomment">/// `fn_value`.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">append_basic_block</span>(<span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="self">self</span>, <span class="ident">fn_value</span>: <span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">BasicBlock</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">block</span> <span class="op">=</span> <span class="kw">unsafe</span> { + <span class="ident">LLVMAppendBasicBlockInContext</span>( + <span class="self">self</span>.<span class="ident">ctx</span>, + <span class="ident">fn_value</span>.<span class="ident">value_ref</span>(), + <span class="string">b"block\0"</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), + ) + }; + <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">block</span>.<span class="ident">is_null</span>()); + + <span class="ident">BasicBlock</span>(<span class="ident">block</span>, <span class="ident">PhantomData</span>) + } +} + +<span class="kw">impl</span> <span class="ident">Drop</span> <span class="kw">for</span> <span class="ident">Module</span> { + <span class="kw">fn</span> <span class="ident">drop</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) { + <span class="kw">unsafe</span> { + <span class="ident">LLVMDisposeModule</span>(<span class="self">self</span>.<span class="ident">module</span>); + <span class="ident">LLVMContextDispose</span>(<span class="self">self</span>.<span class="ident">ctx</span>); + } + } +} + +<span class="comment">// ===========</span> +<span class="comment">// Builder</span> +<span class="comment">// ===========</span> + +<span class="doccomment">/// Wrapper for a LLVM IR Builder.</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Builder</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="ident">builder</span>: <span class="ident">LLVMBuilderRef</span>, + <span class="ident">_ctx</span>: <span class="ident">PhantomData</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'llvm</span> ()<span class="op">></span>, +} + +<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> <span class="ident">Builder</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="doccomment">/// Create a new LLVM IR Builder with the `module`s context.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if creating the IR Builder fails.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_ctx</span>(<span class="ident">module</span>: <span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="ident">Module</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Builder</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">builder</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMCreateBuilderInContext</span>(<span class="ident">module</span>.<span class="ident">ctx</span>) }; + <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">builder</span>.<span class="ident">is_null</span>()); + + <span class="ident">Builder</span> { + <span class="ident">builder</span>, + <span class="ident">_ctx</span>: <span class="ident">PhantomData</span>, + } + } + + <span class="doccomment">/// Position the IR Builder at the end of the given Basic Block.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">pos_at_end</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">bb</span>: <span class="ident">BasicBlock</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>) { + <span class="kw">unsafe</span> { + <span class="ident">LLVMPositionBuilderAtEnd</span>(<span class="self">self</span>.<span class="ident">builder</span>, <span class="ident">bb</span>.<span class="number">0</span>); + } + } + + <span class="doccomment">/// Emit a [fadd](https://llvm.org/docs/LangRef.html#fadd-instruction) instruction.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">fadd</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">lhs</span>: <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>, <span class="ident">rhs</span>: <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="macro">debug_assert!</span>(<span class="ident">lhs</span>.<span class="ident">is_f64</span>(), <span class="string">"fadd: Expected f64 as lhs operand!"</span>); + <span class="macro">debug_assert!</span>(<span class="ident">rhs</span>.<span class="ident">is_f64</span>(), <span class="string">"fadd: Expected f64 as rhs operand!"</span>); + + <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { + <span class="ident">LLVMBuildFAdd</span>( + <span class="self">self</span>.<span class="ident">builder</span>, + <span class="ident">lhs</span>.<span class="ident">value_ref</span>(), + <span class="ident">rhs</span>.<span class="ident">value_ref</span>(), + <span class="string">b"fadd\0"</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), + ) + }; + <span class="ident">Value::new</span>(<span class="ident">value_ref</span>) + } + + <span class="doccomment">/// Emit a [fsub](https://llvm.org/docs/LangRef.html#fsub-instruction) instruction.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">fsub</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">lhs</span>: <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>, <span class="ident">rhs</span>: <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="macro">debug_assert!</span>(<span class="ident">lhs</span>.<span class="ident">is_f64</span>(), <span class="string">"fsub: Expected f64 as lhs operand!"</span>); + <span class="macro">debug_assert!</span>(<span class="ident">rhs</span>.<span class="ident">is_f64</span>(), <span class="string">"fsub: Expected f64 as rhs operand!"</span>); + + <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { + <span class="ident">LLVMBuildFSub</span>( + <span class="self">self</span>.<span class="ident">builder</span>, + <span class="ident">lhs</span>.<span class="ident">value_ref</span>(), + <span class="ident">rhs</span>.<span class="ident">value_ref</span>(), + <span class="string">b"fsub\0"</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), + ) + }; + <span class="ident">Value::new</span>(<span class="ident">value_ref</span>) + } + + <span class="doccomment">/// Emit a [fmul](https://llvm.org/docs/LangRef.html#fmul-instruction) instruction.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">fmul</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">lhs</span>: <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>, <span class="ident">rhs</span>: <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="macro">debug_assert!</span>(<span class="ident">lhs</span>.<span class="ident">is_f64</span>(), <span class="string">"fmul: Expected f64 as lhs operand!"</span>); + <span class="macro">debug_assert!</span>(<span class="ident">rhs</span>.<span class="ident">is_f64</span>(), <span class="string">"fmul: Expected f64 as rhs operand!"</span>); + + <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { + <span class="ident">LLVMBuildFMul</span>( + <span class="self">self</span>.<span class="ident">builder</span>, + <span class="ident">lhs</span>.<span class="ident">value_ref</span>(), + <span class="ident">rhs</span>.<span class="ident">value_ref</span>(), + <span class="string">b"fmul\0"</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), + ) + }; + <span class="ident">Value::new</span>(<span class="ident">value_ref</span>) + } + + <span class="doccomment">/// Emit a [fcmult](https://llvm.org/docs/LangRef.html#fcmp-instruction) instruction.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">fcmpult</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">lhs</span>: <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>, <span class="ident">rhs</span>: <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="macro">debug_assert!</span>(<span class="ident">lhs</span>.<span class="ident">is_f64</span>(), <span class="string">"fcmplt: Expected f64 as lhs operand!"</span>); + <span class="macro">debug_assert!</span>(<span class="ident">rhs</span>.<span class="ident">is_f64</span>(), <span class="string">"fcmplt: Expected f64 as rhs operand!"</span>); + + <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { + <span class="ident">LLVMBuildFCmp</span>( + <span class="self">self</span>.<span class="ident">builder</span>, + <span class="ident">LLVMRealPredicate::LLVMRealULT</span>, + <span class="ident">lhs</span>.<span class="ident">value_ref</span>(), + <span class="ident">rhs</span>.<span class="ident">value_ref</span>(), + <span class="string">b"fcmplt\0"</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), + ) + }; + <span class="ident">Value::new</span>(<span class="ident">value_ref</span>) + } + + <span class="doccomment">/// Emit a [uitofp](https://llvm.org/docs/LangRef.html#uitofp-to-instruction) instruction.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">uitofp</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">val</span>: <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>, <span class="ident">dest_type</span>: <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="macro">debug_assert!</span>(<span class="ident">val</span>.<span class="ident">is_int</span>(), <span class="string">"uitofp: Expected integer operand!"</span>); + + <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { + <span class="ident">LLVMBuildUIToFP</span>( + <span class="self">self</span>.<span class="ident">builder</span>, + <span class="ident">val</span>.<span class="ident">value_ref</span>(), + <span class="ident">dest_type</span>.<span class="number">0</span>, + <span class="string">b"uitofp\0"</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), + ) + }; + <span class="ident">Value::new</span>(<span class="ident">value_ref</span>) + } + + <span class="doccomment">/// Emit a [call](https://llvm.org/docs/LangRef.html#call-instruction) instruction.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">call</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">fn_value</span>: <span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>, <span class="ident">args</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> [<span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>]) <span class="op">-</span><span class="op">></span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { + <span class="ident">LLVMBuildCall2</span>( + <span class="self">self</span>.<span class="ident">builder</span>, + <span class="ident">fn_value</span>.<span class="ident">ret_type</span>(), + <span class="ident">fn_value</span>, + <span class="ident">args</span>.<span class="ident">as_mut_ptr</span>(), + <span class="ident">args</span>.<span class="ident">len</span>() <span class="kw">as</span> <span class="ident">libc::c_uint</span>, + <span class="string">b"call\0"</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), + ) + }; + <span class="ident">Value::new</span>(<span class="ident">value_ref</span>) + } + + <span class="doccomment">/// Emit a [ret](https://llvm.org/docs/LangRef.html#ret-instruction) instruction.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">ret</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">ret</span>: <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>) { + <span class="kw">let</span> <span class="ident">ret</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMBuildRet</span>(<span class="self">self</span>.<span class="ident">builder</span>, <span class="ident">ret</span>.<span class="ident">value_ref</span>()) }; + <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">ret</span>.<span class="ident">is_null</span>()); + } +} + +<span class="kw">impl</span> <span class="ident">Drop</span> <span class="kw">for</span> <span class="ident">Builder</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span> { + <span class="kw">fn</span> <span class="ident">drop</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) { + <span class="kw">unsafe</span> { <span class="ident">LLVMDisposeBuilder</span>(<span class="self">self</span>.<span class="ident">builder</span>) } + } +} + +<span class="comment">// ==============</span> +<span class="comment">// BasicBlock</span> +<span class="comment">// ==============</span> + +<span class="doccomment">/// Wrapper for a LLVM Basic Block.</span> +<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">Clone</span>)]</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BasicBlock</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>(<span class="ident">LLVMBasicBlockRef</span>, <span class="ident">PhantomData</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'llvm</span> ()<span class="op">></span>); + +<span class="comment">// ========</span> +<span class="comment">// Type</span> +<span class="comment">// ========</span> + +<span class="doccomment">/// Wrapper for a LLVM Type Reference.</span> +<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">Clone</span>)]</span> +<span class="attribute">#[<span class="ident">repr</span>(<span class="ident">transparent</span>)]</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>(<span class="ident">LLVMTypeRef</span>, <span class="ident">PhantomData</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'llvm</span> ()<span class="op">></span>); + +<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">type_ref</span>: <span class="ident">LLVMTypeRef</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { + <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">type_ref</span>.<span class="ident">is_null</span>()); + <span class="ident">Type</span>(<span class="ident">type_ref</span>, <span class="ident">PhantomData</span>) + } + + <span class="kw">fn</span> <span class="ident">kind</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">LLVMTypeKind</span> { + <span class="kw">unsafe</span> { <span class="ident">LLVMGetTypeKind</span>(<span class="self">self</span>.<span class="number">0</span>) } + } + + <span class="doccomment">/// Dump the LLVM Type to stdout.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dump</span>(<span class="kw-2">&</span><span class="self">self</span>) { + <span class="kw">unsafe</span> { <span class="ident">LLVMDumpType</span>(<span class="self">self</span>.<span class="number">0</span>) }; + } + + <span class="doccomment">/// Get a value reference representing the const `f64` value.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">const_f64</span>(<span class="self">self</span>, <span class="ident">n</span>: <span class="ident">f64</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="macro">debug_assert_eq!</span>( + <span class="self">self</span>.<span class="ident">kind</span>(), + <span class="ident">LLVMTypeKind::LLVMDoubleTypeKind</span>, + <span class="string">"Expected a double type when creating const f64 value!"</span> + ); + + <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMConstReal</span>(<span class="self">self</span>.<span class="number">0</span>, <span class="ident">n</span>) }; + <span class="ident">Value::new</span>(<span class="ident">value_ref</span>) + } +} + +<span class="comment">// =========</span> +<span class="comment">// Value</span> +<span class="comment">// =========</span> + +<span class="doccomment">/// Wrapper for a LLVM Value Reference.</span> +<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">Clone</span>)]</span> +<span class="attribute">#[<span class="ident">repr</span>(<span class="ident">transparent</span>)]</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>(<span class="ident">LLVMValueRef</span>, <span class="ident">PhantomData</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'llvm</span> ()<span class="op">></span>); + +<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">value_ref</span>: <span class="ident">LLVMValueRef</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { + <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">value_ref</span>.<span class="ident">is_null</span>()); + <span class="ident">Value</span>(<span class="ident">value_ref</span>, <span class="ident">PhantomData</span>) + } + + <span class="attribute">#[<span class="ident">inline</span>]</span> + <span class="kw">fn</span> <span class="ident">value_ref</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">LLVMValueRef</span> { + <span class="self">self</span>.<span class="number">0</span> + } + + <span class="kw">fn</span> <span class="ident">kind</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">LLVMValueKind</span> { + <span class="kw">unsafe</span> { <span class="ident">LLVMGetValueKind</span>(<span class="self">self</span>.<span class="ident">value_ref</span>()) } + } + + <span class="doccomment">/// Dump the LLVM Value to stdout.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dump</span>(<span class="kw-2">&</span><span class="self">self</span>) { + <span class="kw">unsafe</span> { <span class="ident">LLVMDumpValue</span>(<span class="self">self</span>.<span class="ident">value_ref</span>()) }; + } + + <span class="doccomment">/// Get a type reference representing for the given value reference.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">type_of</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">type_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMTypeOf</span>(<span class="self">self</span>.<span class="ident">value_ref</span>()) }; + <span class="ident">Type::new</span>(<span class="ident">type_ref</span>) + } + + <span class="doccomment">/// Set the name for the given value reference.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_name</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">name</span>: <span class="kw-2">&</span><span class="ident">str</span>) { + <span class="kw">unsafe</span> { <span class="ident">LLVMSetValueName2</span>(<span class="self">self</span>.<span class="ident">value_ref</span>(), <span class="ident">name</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), <span class="ident">name</span>.<span class="ident">len</span>()) }; + } + + <span class="doccomment">/// Get the name for the given value reference.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_name</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="lifetime">'llvm</span> <span class="ident">str</span> { + <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="kw">unsafe</span> { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">len</span>: <span class="ident">libc::size_t</span> <span class="op">=</span> <span class="number">0</span>; + <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">LLVMGetValueName2</span>(<span class="self">self</span>.<span class="number">0</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">len</span> <span class="kw">as</span> <span class="kw">_</span>); + <span class="macro">assert!</span>(<span class="op">!</span><span class="ident">name</span>.<span class="ident">is_null</span>()); + + <span class="ident">CStr::from_ptr</span>(<span class="ident">name</span>) + }; + + <span class="comment">// TODO: Does this string live for the time of the LLVM context?!</span> + <span class="ident">name</span>.<span class="ident">to_str</span>() + .<span class="ident">expect</span>(<span class="string">"Expected valid UTF8 string from LLVM API"</span>) + } + + <span class="doccomment">/// Check if value is of `f64` type.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_f64</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">bool</span> { + <span class="self">self</span>.<span class="ident">type_of</span>().<span class="ident">kind</span>() <span class="op">=</span><span class="op">=</span> <span class="ident">LLVMTypeKind::LLVMDoubleTypeKind</span> + } + + <span class="doccomment">/// Check if value is of integer type.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_int</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">bool</span> { + <span class="self">self</span>.<span class="ident">type_of</span>().<span class="ident">kind</span>() <span class="op">=</span><span class="op">=</span> <span class="ident">LLVMTypeKind::LLVMIntegerTypeKind</span> + } +} + +<span class="doccomment">/// Wrapper for a LLVM Value Reference specialized for contexts where function values are needed.</span> +<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">Clone</span>)]</span> +<span class="attribute">#[<span class="ident">repr</span>(<span class="ident">transparent</span>)]</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>(<span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>); + +<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> <span class="ident">Deref</span> <span class="kw">for</span> <span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">type</span> <span class="ident">Target</span> <span class="op">=</span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span>; + <span class="kw">fn</span> <span class="ident">deref</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="self">Self</span><span class="ident">::Target</span> { + <span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span> + } +} + +<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> <span class="ident">FnValue</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">value_ref</span>: <span class="ident">LLVMValueRef</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { + <span class="kw">let</span> <span class="ident">value</span> <span class="op">=</span> <span class="ident">Value::new</span>(<span class="ident">value_ref</span>); + <span class="macro">debug_assert_eq!</span>( + <span class="ident">value</span>.<span class="ident">kind</span>(), + <span class="ident">LLVMValueKind::LLVMFunctionValueKind</span>, + <span class="string">"Expected a fn value when constructing FnValue!"</span> + ); + + <span class="ident">FnValue</span>(<span class="ident">value</span>) + } + + <span class="doccomment">/// Get a type reference representing the return value of the given function value.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">ret_type</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Type</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">type_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMGetReturnType</span>(<span class="ident">LLVMTypeOf</span>(<span class="self">self</span>.<span class="ident">value_ref</span>())) }; + <span class="ident">Type::new</span>(<span class="ident">type_ref</span>) + } + + <span class="doccomment">/// Get the number of function arguments for the given function value.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">args</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">usize</span> { + <span class="kw">unsafe</span> { <span class="ident">LLVMCountParams</span>(<span class="self">self</span>.<span class="ident">value_ref</span>()) <span class="kw">as</span> <span class="ident">usize</span> } + } + + <span class="doccomment">/// Get a value reference for the function argument at index `idx`.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Panics if LLVM API returns a `null` pointer or indexed out of bounds.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">arg</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">idx</span>: <span class="ident">usize</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Value</span><span class="op"><</span><span class="lifetime">'llvm</span><span class="op">></span> { + <span class="macro">assert!</span>(<span class="ident">idx</span> <span class="op"><</span> <span class="self">self</span>.<span class="ident">args</span>()); + + <span class="kw">let</span> <span class="ident">value_ref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">LLVMGetParam</span>(<span class="self">self</span>.<span class="ident">value_ref</span>(), <span class="ident">idx</span> <span class="kw">as</span> <span class="ident">libc::c_uint</span>) }; + <span class="ident">Value::new</span>(<span class="ident">value_ref</span>) + } + + <span class="doccomment">/// Get the number of Basic Blocks for the given function value.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">basic_blocks</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">usize</span> { + <span class="kw">unsafe</span> { <span class="ident">LLVMCountBasicBlocks</span>(<span class="self">self</span>.<span class="ident">value_ref</span>()) <span class="kw">as</span> <span class="ident">usize</span> } + } + + <span class="doccomment">/// Verify that the given function is valid.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">verify</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">bool</span> { + <span class="kw">unsafe</span> { + <span class="ident">LLVMVerifyFunction</span>( + <span class="self">self</span>.<span class="ident">value_ref</span>(), + <span class="ident">LLVMVerifierFailureAction::LLVMPrintMessageAction</span>, + ) <span class="op">=</span><span class="op">=</span> <span class="number">0</span> + } + } +} +</pre></div> +</section><section id="search" class="content hidden"></section><div id="rustdoc-vars" data-root-path="../../" data-current-crate="llvm_kaleidoscope_rs" data-search-index-js="../../search-index.js" data-search-js="../../search.js"></div><script src="../../main.js"></script><script src="../../source-script.js"></script><script src="../../source-files.js"></script></body></html>
\ No newline at end of file diff --git a/src/llvm_kaleidoscope_rs/parser.rs.html b/src/llvm_kaleidoscope_rs/parser.rs.html new file mode 100644 index 0000000..3bd0dc8 --- /dev/null +++ b/src/llvm_kaleidoscope_rs/parser.rs.html @@ -0,0 +1,925 @@ +<!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/parser.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>parser.rs - 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="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings"></script><script 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alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img src="../../wheel.svg" width="18" height="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1"> 1</span> +<span id="2"> 2</span> +<span id="3"> 3</span> +<span id="4"> 4</span> +<span id="5"> 5</span> +<span id="6"> 6</span> +<span id="7"> 7</span> +<span id="8"> 8</span> +<span id="9"> 9</span> +<span id="10"> 10</span> +<span id="11"> 11</span> +<span 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id="237">237</span> +<span id="238">238</span> +<span id="239">239</span> +<span id="240">240</span> +<span id="241">241</span> +<span id="242">242</span> +<span id="243">243</span> +<span id="244">244</span> +<span id="245">245</span> +<span id="246">246</span> +<span id="247">247</span> +<span id="248">248</span> +<span id="249">249</span> +<span id="250">250</span> +<span id="251">251</span> +<span id="252">252</span> +<span id="253">253</span> +<span id="254">254</span> +<span id="255">255</span> +<span id="256">256</span> +<span id="257">257</span> +<span id="258">258</span> +<span id="259">259</span> +<span id="260">260</span> +<span id="261">261</span> +<span id="262">262</span> +<span id="263">263</span> +<span id="264">264</span> +<span id="265">265</span> +<span id="266">266</span> +<span id="267">267</span> +<span id="268">268</span> +<span id="269">269</span> +<span id="270">270</span> +<span id="271">271</span> +<span id="272">272</span> +<span id="273">273</span> +<span id="274">274</span> +<span id="275">275</span> +<span id="276">276</span> +<span id="277">277</span> +<span id="278">278</span> +<span id="279">279</span> +<span id="280">280</span> +<span id="281">281</span> +<span id="282">282</span> +<span id="283">283</span> +<span id="284">284</span> +<span id="285">285</span> +<span id="286">286</span> +<span id="287">287</span> +<span id="288">288</span> +<span id="289">289</span> +<span id="290">290</span> +<span id="291">291</span> +<span id="292">292</span> +<span id="293">293</span> +<span id="294">294</span> +<span id="295">295</span> +<span id="296">296</span> +<span id="297">297</span> +<span id="298">298</span> +<span id="299">299</span> +<span id="300">300</span> +<span id="301">301</span> +<span id="302">302</span> +<span id="303">303</span> +<span id="304">304</span> +<span id="305">305</span> +<span id="306">306</span> +<span id="307">307</span> +<span id="308">308</span> +<span id="309">309</span> +<span id="310">310</span> +<span id="311">311</span> +<span id="312">312</span> +<span id="313">313</span> +<span id="314">314</span> +<span id="315">315</span> +<span id="316">316</span> +<span id="317">317</span> +<span id="318">318</span> +<span id="319">319</span> +<span id="320">320</span> +<span id="321">321</span> +<span id="322">322</span> +<span id="323">323</span> +<span id="324">324</span> +<span id="325">325</span> +<span id="326">326</span> +<span id="327">327</span> +<span id="328">328</span> +<span id="329">329</span> +<span id="330">330</span> +<span id="331">331</span> +<span id="332">332</span> +<span id="333">333</span> +<span id="334">334</span> +<span id="335">335</span> +<span id="336">336</span> +<span id="337">337</span> +<span id="338">338</span> +<span id="339">339</span> +<span id="340">340</span> +<span id="341">341</span> +<span id="342">342</span> +<span id="343">343</span> +<span id="344">344</span> +<span id="345">345</span> +<span id="346">346</span> +<span id="347">347</span> +<span id="348">348</span> +<span id="349">349</span> +<span id="350">350</span> +<span id="351">351</span> +<span id="352">352</span> +<span id="353">353</span> +<span id="354">354</span> +<span id="355">355</span> +<span id="356">356</span> +<span id="357">357</span> +<span id="358">358</span> +<span id="359">359</span> +<span id="360">360</span> +<span id="361">361</span> +<span id="362">362</span> +<span id="363">363</span> +<span id="364">364</span> +<span id="365">365</span> +<span id="366">366</span> +<span id="367">367</span> +<span id="368">368</span> +<span id="369">369</span> +<span id="370">370</span> +<span id="371">371</span> +<span id="372">372</span> +<span id="373">373</span> +<span id="374">374</span> +<span id="375">375</span> +<span id="376">376</span> +<span id="377">377</span> +<span id="378">378</span> +<span id="379">379</span> +<span id="380">380</span> +<span id="381">381</span> +<span id="382">382</span> +<span id="383">383</span> +<span id="384">384</span> +<span id="385">385</span> +<span id="386">386</span> +<span id="387">387</span> +<span id="388">388</span> +<span id="389">389</span> +<span id="390">390</span> +<span id="391">391</span> +<span id="392">392</span> +<span id="393">393</span> +<span id="394">394</span> +<span id="395">395</span> +<span id="396">396</span> +<span id="397">397</span> +<span id="398">398</span> +<span id="399">399</span> +<span id="400">400</span> +<span id="401">401</span> +<span id="402">402</span> +<span id="403">403</span> +<span id="404">404</span> +<span id="405">405</span> +<span id="406">406</span> +<span id="407">407</span> +<span id="408">408</span> +<span id="409">409</span> +<span id="410">410</span> +<span id="411">411</span> +<span id="412">412</span> +<span id="413">413</span> +<span id="414">414</span> +<span id="415">415</span> +<span id="416">416</span> +<span id="417">417</span> +<span id="418">418</span> +<span id="419">419</span> +<span id="420">420</span> +<span id="421">421</span> +<span id="422">422</span> +<span id="423">423</span> +<span id="424">424</span> +<span id="425">425</span> +<span id="426">426</span> +<span id="427">427</span> +<span id="428">428</span> +<span id="429">429</span> +<span id="430">430</span> +<span id="431">431</span> +<span id="432">432</span> +<span id="433">433</span> +<span id="434">434</span> +<span id="435">435</span> +<span id="436">436</span> +<span id="437">437</span> +<span id="438">438</span> +<span id="439">439</span> +<span id="440">440</span> +<span id="441">441</span> +<span id="442">442</span> +<span id="443">443</span> +<span id="444">444</span> +<span id="445">445</span> +<span id="446">446</span> +<span id="447">447</span> +<span id="448">448</span> +<span id="449">449</span> +<span id="450">450</span> +<span id="451">451</span> +<span id="452">452</span> +<span id="453">453</span> +<span id="454">454</span> +<span id="455">455</span> +<span id="456">456</span> +<span id="457">457</span> +<span id="458">458</span> +<span id="459">459</span> +<span id="460">460</span> +</pre><pre class="rust"> +<span class="kw">use</span> <span class="kw">crate</span><span class="ident">::lexer</span>::{<span class="ident">Lexer</span>, <span class="ident">Token</span>}; + +<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span> +<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">ExprAST</span> { + <span class="doccomment">/// Number - Expression class for numeric literals like "1.0".</span> + <span class="ident">Number</span>(<span class="ident">f64</span>), + + <span class="doccomment">/// Variable - Expression class for referencing a variable, like "a".</span> + <span class="ident">Variable</span>(<span class="ident">String</span>), + + <span class="doccomment">/// Binary - Expression class for a binary operator.</span> + <span class="ident">Binary</span>(<span class="ident">char</span>, <span class="ident">Box</span><span class="op"><</span><span class="ident">ExprAST</span><span class="op">></span>, <span class="ident">Box</span><span class="op"><</span><span class="ident">ExprAST</span><span class="op">></span>), + + <span class="doccomment">/// Call - Expression class for function calls.</span> + <span class="ident">Call</span>(<span class="ident">String</span>, <span class="ident">Vec</span><span class="op"><</span><span class="ident">ExprAST</span><span class="op">></span>), +} + +<span class="doccomment">/// PrototypeAST - This class represents the "prototype" for a function,</span> +<span class="doccomment">/// which captures its name, and its argument names (thus implicitly the number</span> +<span class="doccomment">/// of arguments the function takes).</span> +<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">PrototypeAST</span>(<span class="kw">pub</span> <span class="ident">String</span>, <span class="kw">pub</span> <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>); + +<span class="doccomment">/// FunctionAST - This class represents a function definition itself.</span> +<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">FunctionAST</span>(<span class="kw">pub</span> <span class="ident">PrototypeAST</span>, <span class="kw">pub</span> <span class="ident">ExprAST</span>); + +<span class="doccomment">/// Parse result with String as Error type (to be compliant with tutorial).</span> +<span class="kw">type</span> <span class="ident">ParseResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="op">=</span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">String</span><span class="op">></span>; + +<span class="doccomment">/// Parser for the `kaleidoscope` language.</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Parser</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> +<span class="kw">where</span> + <span class="ident">I</span>: <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">char</span><span class="op">></span>, +{ + <span class="ident">lexer</span>: <span class="ident">Lexer</span><span class="op"><</span><span class="ident">I</span><span class="op">></span>, + <span class="ident">cur_tok</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Token</span><span class="op">></span>, +} + +<span class="kw">impl</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> <span class="ident">Parser</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> +<span class="kw">where</span> + <span class="ident">I</span>: <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">char</span><span class="op">></span>, +{ + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">lexer</span>: <span class="ident">Lexer</span><span class="op"><</span><span class="ident">I</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> { + <span class="ident">Parser</span> { + <span class="ident">lexer</span>, + <span class="ident">cur_tok</span>: <span class="prelude-val">None</span>, + } + } + + <span class="comment">// -----------------------</span> + <span class="comment">// Simple Token Buffer</span> + <span class="comment">// -----------------------</span> + + <span class="doccomment">/// Implement the global variable `int CurTok;` from the tutorial.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// # Panics</span> + <span class="doccomment">/// Panics if the parser doesn't have a current token.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">cur_tok</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="ident">Token</span> { + <span class="self">self</span>.<span class="ident">cur_tok</span>.<span class="ident">as_ref</span>().<span class="ident">expect</span>(<span class="string">"Parser: Expected cur_token!"</span>) + } + + <span class="doccomment">/// Advance the `cur_tok` by getting the next token from the lexer.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement the fucntion `int getNextToken();` from the tutorial.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_next_token</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) { + <span class="self">self</span>.<span class="ident">cur_tok</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">lexer</span>.<span class="ident">gettok</span>()); + } + + <span class="comment">// ----------------------------</span> + <span class="comment">// Basic Expression Parsing</span> + <span class="comment">// ----------------------------</span> + + <span class="doccomment">/// numberexpr ::= number</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement `std::unique_ptr<ExprAST> ParseNumberExpr();` from the tutorial.</span> + <span class="kw">fn</span> <span class="ident">parse_num_expr</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">ParseResult</span><span class="op"><</span><span class="ident">ExprAST</span><span class="op">></span> { + <span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>() { + <span class="ident">Token::Number</span>(<span class="ident">num</span>) <span class="op">=</span><span class="op">></span> { + <span class="comment">// Consume the number token.</span> + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + <span class="prelude-val">Ok</span>(<span class="ident">ExprAST::Number</span>(<span class="ident">num</span>)) + } + <span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable!</span>(), + } + } + + <span class="doccomment">/// parenexpr ::= '(' expression ')'</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement `std::unique_ptr<ExprAST> ParseParenExpr();` from the tutorial.</span> + <span class="kw">fn</span> <span class="ident">parse_paren_expr</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">ParseResult</span><span class="op"><</span><span class="ident">ExprAST</span><span class="op">></span> { + <span class="comment">// Eat '(' token.</span> + <span class="macro">assert_eq!</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>(), <span class="ident">Token::Char</span>(<span class="string">'('</span>)); + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + + <span class="kw">let</span> <span class="ident">v</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">parse_expression</span>()<span class="question-mark">?</span>; + + <span class="kw">if</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>() <span class="op">=</span><span class="op">=</span> <span class="ident">Token::Char</span>(<span class="string">')'</span>) { + <span class="comment">// Eat ')' token.</span> + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + <span class="prelude-val">Ok</span>(<span class="ident">v</span>) + } <span class="kw">else</span> { + <span class="prelude-val">Err</span>(<span class="string">"expected ')'"</span>.<span class="ident">into</span>()) + } + } + + <span class="doccomment">/// identifierexpr</span> + <span class="doccomment">/// ::= identifier</span> + <span class="doccomment">/// ::= identifier '(' expression* ')'</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement `std::unique_ptr<ExprAST> ParseIdentifierExpr();` from the tutorial.</span> + <span class="kw">fn</span> <span class="ident">parse_identifier_expr</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">ParseResult</span><span class="op"><</span><span class="ident">ExprAST</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">id_name</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">cur_tok</span>.<span class="ident">take</span>() { + <span class="prelude-val">Some</span>(<span class="ident">Token::Identifier</span>(<span class="ident">id</span>)) <span class="op">=</span><span class="op">></span> { + <span class="comment">// Consume identifier.</span> + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + <span class="ident">id</span> + } + <span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable!</span>(), + }; + + <span class="kw">if</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>() <span class="op">!</span><span class="op">=</span> <span class="ident">Token::Char</span>(<span class="string">'('</span>) { + <span class="comment">// Simple variable reference.</span> + <span class="prelude-val">Ok</span>(<span class="ident">ExprAST::Variable</span>(<span class="ident">id_name</span>)) + } <span class="kw">else</span> { + <span class="comment">// Call.</span> + + <span class="comment">// Eat '(' token.</span> + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">args</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">ExprAST</span><span class="op">></span> <span class="op">=</span> <span class="ident">Vec::new</span>(); + + <span class="comment">// If there are arguments collect them.</span> + <span class="kw">if</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>() <span class="op">!</span><span class="op">=</span> <span class="ident">Token::Char</span>(<span class="string">')'</span>) { + <span class="kw">loop</span> { + <span class="kw">let</span> <span class="ident">arg</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">parse_expression</span>()<span class="question-mark">?</span>; + <span class="ident">args</span>.<span class="ident">push</span>(<span class="ident">arg</span>); + + <span class="kw">if</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>() <span class="op">=</span><span class="op">=</span> <span class="ident">Token::Char</span>(<span class="string">')'</span>) { + <span class="comment">// Eat ')' token.</span> + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + <span class="kw">break</span>; + } + + <span class="kw">if</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>() <span class="op">!</span><span class="op">=</span> <span class="ident">Token::Char</span>(<span class="string">','</span>) { + <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="string">"Expected ')' or ',' in argument list"</span>.<span class="ident">into</span>()); + } + + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + } + } + + <span class="prelude-val">Ok</span>(<span class="ident">ExprAST::Call</span>(<span class="ident">id_name</span>, <span class="ident">args</span>)) + } + } + + <span class="doccomment">/// primary</span> + <span class="doccomment">/// ::= identifierexpr</span> + <span class="doccomment">/// ::= numberexpr</span> + <span class="doccomment">/// ::= parenexpr</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement `std::unique_ptr<ExprAST> ParsePrimary();` from the tutorial.</span> + <span class="kw">fn</span> <span class="ident">parse_primary</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">ParseResult</span><span class="op"><</span><span class="ident">ExprAST</span><span class="op">></span> { + <span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>() { + <span class="ident">Token::Identifier</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="self">self</span>.<span class="ident">parse_identifier_expr</span>(), + <span class="ident">Token::Number</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="self">self</span>.<span class="ident">parse_num_expr</span>(), + <span class="ident">Token::Char</span>(<span class="string">'('</span>) <span class="op">=</span><span class="op">></span> <span class="self">self</span>.<span class="ident">parse_paren_expr</span>(), + <span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="string">"unknown token when expecting an expression"</span>.<span class="ident">into</span>()), + } + } + + <span class="comment">// -----------------------------</span> + <span class="comment">// Binary Expression Parsing</span> + <span class="comment">// -----------------------------</span> + + <span class="doccomment">/// /// expression</span> + <span class="doccomment">/// ::= primary binoprhs</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement `std::unique_ptr<ExprAST> ParseExpression();` from the tutorial.</span> + <span class="kw">fn</span> <span class="ident">parse_expression</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">ParseResult</span><span class="op"><</span><span class="ident">ExprAST</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">lhs</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">parse_primary</span>()<span class="question-mark">?</span>; + <span class="self">self</span>.<span class="ident">parse_bin_op_rhs</span>(<span class="number">0</span>, <span class="ident">lhs</span>) + } + + <span class="doccomment">/// binoprhs</span> + <span class="doccomment">/// ::= ('+' primary)*</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement `std::unique_ptr<ExprAST> ParseBinOpRHS(int ExprPrec, std::unique_ptr<ExprAST> LHS);` from the tutorial.</span> + <span class="kw">fn</span> <span class="ident">parse_bin_op_rhs</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">expr_prec</span>: <span class="ident">isize</span>, <span class="kw-2">mut</span> <span class="ident">lhs</span>: <span class="ident">ExprAST</span>) <span class="op">-</span><span class="op">></span> <span class="ident">ParseResult</span><span class="op"><</span><span class="ident">ExprAST</span><span class="op">></span> { + <span class="kw">loop</span> { + <span class="kw">let</span> <span class="ident">tok_prec</span> <span class="op">=</span> <span class="ident">get_tok_precedence</span>(<span class="self">self</span>.<span class="ident">cur_tok</span>()); + + <span class="comment">// Not a binary operator or precedence is too small.</span> + <span class="kw">if</span> <span class="ident">tok_prec</span> <span class="op"><</span> <span class="ident">expr_prec</span> { + <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">lhs</span>); + } + + <span class="kw">let</span> <span class="ident">binop</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">cur_tok</span>.<span class="ident">take</span>() { + <span class="prelude-val">Some</span>(<span class="ident">Token::Char</span>(<span class="ident">c</span>)) <span class="op">=</span><span class="op">></span> { + <span class="comment">// Eat binary operator.</span> + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + <span class="ident">c</span> + } + <span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable!</span>(), + }; + + <span class="comment">// lhs BINOP1 rhs BINOP2 remrhs</span> + <span class="comment">// ^^^^^^ ^^^^^^</span> + <span class="comment">// tok_prec next_prec</span> + <span class="comment">//</span> + <span class="comment">// In case BINOP1 has higher precedence, we are done here and can build a 'Binary' AST</span> + <span class="comment">// node between 'lhs' and 'rhs'.</span> + <span class="comment">//</span> + <span class="comment">// In case BINOP2 has higher precedence, we take 'rhs' as 'lhs' and recurse into the</span> + <span class="comment">// 'remrhs' expression first.</span> + + <span class="comment">// Parse primary expression after binary operator.</span> + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">rhs</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">parse_primary</span>()<span class="question-mark">?</span>; + + <span class="kw">let</span> <span class="ident">next_prec</span> <span class="op">=</span> <span class="ident">get_tok_precedence</span>(<span class="self">self</span>.<span class="ident">cur_tok</span>()); + <span class="kw">if</span> <span class="ident">tok_prec</span> <span class="op"><</span> <span class="ident">next_prec</span> { + <span class="comment">// BINOP2 has higher precedence thatn BINOP1, recurse into 'remhs'.</span> + <span class="ident">rhs</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">parse_bin_op_rhs</span>(<span class="ident">tok_prec</span> <span class="op">+</span> <span class="number">1</span>, <span class="ident">rhs</span>)<span class="question-mark">?</span> + } + + <span class="ident">lhs</span> <span class="op">=</span> <span class="ident">ExprAST::Binary</span>(<span class="ident">binop</span>, <span class="ident">Box::new</span>(<span class="ident">lhs</span>), <span class="ident">Box::new</span>(<span class="ident">rhs</span>)); + } + } + + <span class="comment">// --------------------</span> + <span class="comment">// Parsing the Rest</span> + <span class="comment">// --------------------</span> + + <span class="doccomment">/// prototype</span> + <span class="doccomment">/// ::= id '(' id* ')'</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement `std::unique_ptr<PrototypeAST> ParsePrototype();` from the tutorial.</span> + <span class="kw">fn</span> <span class="ident">parse_prototype</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">ParseResult</span><span class="op"><</span><span class="ident">PrototypeAST</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">id_name</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">cur_tok</span>.<span class="ident">take</span>() { + <span class="prelude-val">Some</span>(<span class="ident">Token::Identifier</span>(<span class="ident">id</span>)) <span class="op">=</span><span class="op">></span> { + <span class="comment">// Consume the identifier.</span> + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + <span class="ident">id</span> + } + <span class="ident">other</span> <span class="op">=</span><span class="op">></span> { + <span class="comment">// Plug back current token.</span> + <span class="self">self</span>.<span class="ident">cur_tok</span> <span class="op">=</span> <span class="ident">other</span>; + <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="string">"Expected function name in prototype"</span>.<span class="ident">into</span>()); + } + }; + + <span class="kw">if</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>() <span class="op">!</span><span class="op">=</span> <span class="ident">Token::Char</span>(<span class="string">'('</span>) { + <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="string">"Expected '(' in prototype"</span>.<span class="ident">into</span>()); + } + + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">args</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="op">=</span> <span class="ident">Vec::new</span>(); + <span class="kw">loop</span> { + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + + <span class="kw">match</span> <span class="self">self</span>.<span class="ident">cur_tok</span>.<span class="ident">take</span>() { + <span class="prelude-val">Some</span>(<span class="ident">Token::Identifier</span>(<span class="ident">arg</span>)) <span class="op">=</span><span class="op">></span> <span class="ident">args</span>.<span class="ident">push</span>(<span class="ident">arg</span>), + <span class="prelude-val">Some</span>(<span class="ident">Token::Char</span>(<span class="string">','</span>)) <span class="op">=</span><span class="op">></span> {} + <span class="ident">other</span> <span class="op">=</span><span class="op">></span> { + <span class="self">self</span>.<span class="ident">cur_tok</span> <span class="op">=</span> <span class="ident">other</span>; + <span class="kw">break</span>; + } + } + } + + <span class="kw">if</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>() <span class="op">!</span><span class="op">=</span> <span class="ident">Token::Char</span>(<span class="string">')'</span>) { + <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="string">"Expected ')' in prototype"</span>.<span class="ident">into</span>()); + } + + <span class="comment">// Consume ')'.</span> + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + + <span class="prelude-val">Ok</span>(<span class="ident">PrototypeAST</span>(<span class="ident">id_name</span>, <span class="ident">args</span>)) + } + + <span class="doccomment">/// definition ::= 'def' prototype expression</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement `std::unique_ptr<FunctionAST> ParseDefinition();` from the tutorial.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">parse_definition</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">ParseResult</span><span class="op"><</span><span class="ident">FunctionAST</span><span class="op">></span> { + <span class="comment">// Consume 'def' token.</span> + <span class="macro">assert_eq!</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>(), <span class="ident">Token::Def</span>); + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + + <span class="kw">let</span> <span class="ident">proto</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">parse_prototype</span>()<span class="question-mark">?</span>; + <span class="kw">let</span> <span class="ident">expr</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">parse_expression</span>()<span class="question-mark">?</span>; + + <span class="prelude-val">Ok</span>(<span class="ident">FunctionAST</span>(<span class="ident">proto</span>, <span class="ident">expr</span>)) + } + + <span class="doccomment">/// external ::= 'extern' prototype</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement `std::unique_ptr<PrototypeAST> ParseExtern();` from the tutorial.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">parse_extern</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">ParseResult</span><span class="op"><</span><span class="ident">PrototypeAST</span><span class="op">></span> { + <span class="comment">// Consume 'extern' token.</span> + <span class="macro">assert_eq!</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">cur_tok</span>(), <span class="ident">Token::Extern</span>); + <span class="self">self</span>.<span class="ident">get_next_token</span>(); + + <span class="self">self</span>.<span class="ident">parse_prototype</span>() + } + + <span class="doccomment">/// toplevelexpr ::= expression</span> + <span class="doccomment">///</span> + <span class="doccomment">/// Implement `std::unique_ptr<FunctionAST> ParseTopLevelExpr();` from the tutorial.</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">parse_top_level_expr</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">ParseResult</span><span class="op"><</span><span class="ident">FunctionAST</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">e</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">parse_expression</span>()<span class="question-mark">?</span>; + <span class="kw">let</span> <span class="ident">proto</span> <span class="op">=</span> <span class="ident">PrototypeAST</span>(<span class="string">""</span>.<span class="ident">into</span>(), <span class="ident">Vec::new</span>()); + <span class="prelude-val">Ok</span>(<span class="ident">FunctionAST</span>(<span class="ident">proto</span>, <span class="ident">e</span>)) + } +} + +<span class="doccomment">/// Get the binary operator precedence.</span> +<span class="doccomment">///</span> +<span class="doccomment">/// Implement `int GetTokPrecedence();` from the tutorial.</span> +<span class="kw">fn</span> <span class="ident">get_tok_precedence</span>(<span class="ident">tok</span>: <span class="kw-2">&</span><span class="ident">Token</span>) <span class="op">-</span><span class="op">></span> <span class="ident">isize</span> { + <span class="kw">match</span> <span class="ident">tok</span> { + <span class="ident">Token::Char</span>(<span class="string">'<'</span>) <span class="op">=</span><span class="op">></span> <span class="number">10</span>, + <span class="ident">Token::Char</span>(<span class="string">'+'</span>) <span class="op">=</span><span class="op">></span> <span class="number">20</span>, + <span class="ident">Token::Char</span>(<span class="string">'-'</span>) <span class="op">=</span><span class="op">></span> <span class="number">20</span>, + <span class="ident">Token::Char</span>(<span class="string">'*'</span>) <span class="op">=</span><span class="op">></span> <span class="number">40</span>, + <span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="op">-</span><span class="number">1</span>, + } +} + +<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> +<span class="kw">mod</span> <span class="ident">test</span> { + <span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">ExprAST</span>, <span class="ident">FunctionAST</span>, <span class="ident">Parser</span>, <span class="ident">PrototypeAST</span>}; + <span class="kw">use</span> <span class="kw">crate</span><span class="ident">::lexer::Lexer</span>; + + <span class="kw">fn</span> <span class="ident">parser</span>(<span class="ident">input</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Parser</span><span class="op"><</span><span class="ident">std::str::Chars</span><span class="op">></span> { + <span class="kw">let</span> <span class="ident">l</span> <span class="op">=</span> <span class="ident">Lexer::new</span>(<span class="ident">input</span>.<span class="ident">chars</span>()); + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">Parser::new</span>(<span class="ident">l</span>); + + <span class="comment">// Drop initial coin, initialize cur_tok.</span> + <span class="ident">p</span>.<span class="ident">get_next_token</span>(); + + <span class="ident">p</span> + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">parse_number</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">parser</span>(<span class="string">"13.37"</span>); + + <span class="macro">assert_eq!</span>(<span class="ident">p</span>.<span class="ident">parse_num_expr</span>(), <span class="prelude-val">Ok</span>(<span class="ident">ExprAST::Number</span>(<span class="number">13.37f64</span>))); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">parse_variable</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">parser</span>(<span class="string">"foop"</span>); + + <span class="macro">assert_eq!</span>( + <span class="ident">p</span>.<span class="ident">parse_identifier_expr</span>(), + <span class="prelude-val">Ok</span>(<span class="ident">ExprAST::Variable</span>(<span class="string">"foop"</span>.<span class="ident">into</span>())) + ); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">parse_primary</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">parser</span>(<span class="string">"1337 foop \n bla(123)"</span>); + + <span class="macro">assert_eq!</span>(<span class="ident">p</span>.<span class="ident">parse_primary</span>(), <span class="prelude-val">Ok</span>(<span class="ident">ExprAST::Number</span>(<span class="number">1337f64</span>))); + + <span class="macro">assert_eq!</span>(<span class="ident">p</span>.<span class="ident">parse_primary</span>(), <span class="prelude-val">Ok</span>(<span class="ident">ExprAST::Variable</span>(<span class="string">"foop"</span>.<span class="ident">into</span>()))); + + <span class="macro">assert_eq!</span>( + <span class="ident">p</span>.<span class="ident">parse_primary</span>(), + <span class="prelude-val">Ok</span>(<span class="ident">ExprAST::Call</span>(<span class="string">"bla"</span>.<span class="ident">into</span>(), <span class="macro">vec!</span>[<span class="ident">ExprAST::Number</span>(<span class="number">123f64</span>)])) + ); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">parse_binary_op</span>() { + <span class="comment">// Operator before RHS has higher precedence, expected AST</span> + <span class="comment">//</span> + <span class="comment">// -</span> + <span class="comment">// / \</span> + <span class="comment">// + c</span> + <span class="comment">// / \</span> + <span class="comment">// a b</span> + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">parser</span>(<span class="string">"a + b - c"</span>); + + <span class="kw">let</span> <span class="ident">binexpr_ab</span> <span class="op">=</span> <span class="ident">ExprAST::Binary</span>( + <span class="string">'+'</span>, + <span class="ident">Box::new</span>(<span class="ident">ExprAST::Variable</span>(<span class="string">"a"</span>.<span class="ident">into</span>())), + <span class="ident">Box::new</span>(<span class="ident">ExprAST::Variable</span>(<span class="string">"b"</span>.<span class="ident">into</span>())), + ); + + <span class="kw">let</span> <span class="ident">binexpr_abc</span> <span class="op">=</span> <span class="ident">ExprAST::Binary</span>( + <span class="string">'-'</span>, + <span class="ident">Box::new</span>(<span class="ident">binexpr_ab</span>), + <span class="ident">Box::new</span>(<span class="ident">ExprAST::Variable</span>(<span class="string">"c"</span>.<span class="ident">into</span>())), + ); + + <span class="macro">assert_eq!</span>(<span class="ident">p</span>.<span class="ident">parse_expression</span>(), <span class="prelude-val">Ok</span>(<span class="ident">binexpr_abc</span>)); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">parse_binary_op2</span>() { + <span class="comment">// Operator after RHS has higher precedence, expected AST</span> + <span class="comment">//</span> + <span class="comment">// +</span> + <span class="comment">// / \</span> + <span class="comment">// a *</span> + <span class="comment">// / \</span> + <span class="comment">// b c</span> + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">parser</span>(<span class="string">"a + b * c"</span>); + + <span class="kw">let</span> <span class="ident">binexpr_bc</span> <span class="op">=</span> <span class="ident">ExprAST::Binary</span>( + <span class="string">'*'</span>, + <span class="ident">Box::new</span>(<span class="ident">ExprAST::Variable</span>(<span class="string">"b"</span>.<span class="ident">into</span>())), + <span class="ident">Box::new</span>(<span class="ident">ExprAST::Variable</span>(<span class="string">"c"</span>.<span class="ident">into</span>())), + ); + + <span class="kw">let</span> <span class="ident">binexpr_abc</span> <span class="op">=</span> <span class="ident">ExprAST::Binary</span>( + <span class="string">'+'</span>, + <span class="ident">Box::new</span>(<span class="ident">ExprAST::Variable</span>(<span class="string">"a"</span>.<span class="ident">into</span>())), + <span class="ident">Box::new</span>(<span class="ident">binexpr_bc</span>), + ); + + <span class="macro">assert_eq!</span>(<span class="ident">p</span>.<span class="ident">parse_expression</span>(), <span class="prelude-val">Ok</span>(<span class="ident">binexpr_abc</span>)); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">parse_prototype</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">parser</span>(<span class="string">"foo(a,b)"</span>); + + <span class="kw">let</span> <span class="ident">proto</span> <span class="op">=</span> <span class="ident">PrototypeAST</span>(<span class="string">"foo"</span>.<span class="ident">into</span>(), <span class="macro">vec!</span>[<span class="string">"a"</span>.<span class="ident">into</span>(), <span class="string">"b"</span>.<span class="ident">into</span>()]); + + <span class="macro">assert_eq!</span>(<span class="ident">p</span>.<span class="ident">parse_prototype</span>(), <span class="prelude-val">Ok</span>(<span class="ident">proto</span>)); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">parse_definition</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">parser</span>(<span class="string">"def bar( arg0 , arg1 ) arg0 + arg1"</span>); + + <span class="kw">let</span> <span class="ident">proto</span> <span class="op">=</span> <span class="ident">PrototypeAST</span>(<span class="string">"bar"</span>.<span class="ident">into</span>(), <span class="macro">vec!</span>[<span class="string">"arg0"</span>.<span class="ident">into</span>(), <span class="string">"arg1"</span>.<span class="ident">into</span>()]); + + <span class="kw">let</span> <span class="ident">body</span> <span class="op">=</span> <span class="ident">ExprAST::Binary</span>( + <span class="string">'+'</span>, + <span class="ident">Box::new</span>(<span class="ident">ExprAST::Variable</span>(<span class="string">"arg0"</span>.<span class="ident">into</span>())), + <span class="ident">Box::new</span>(<span class="ident">ExprAST::Variable</span>(<span class="string">"arg1"</span>.<span class="ident">into</span>())), + ); + + <span class="kw">let</span> <span class="ident">func</span> <span class="op">=</span> <span class="ident">FunctionAST</span>(<span class="ident">proto</span>, <span class="ident">body</span>); + + <span class="macro">assert_eq!</span>(<span class="ident">p</span>.<span class="ident">parse_definition</span>(), <span class="prelude-val">Ok</span>(<span class="ident">func</span>)); + } + + <span class="attribute">#[<span class="ident">test</span>]</span> + <span class="kw">fn</span> <span class="ident">parse_extern</span>() { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">parser</span>(<span class="string">"extern baz()"</span>); + + <span class="kw">let</span> <span class="ident">proto</span> <span class="op">=</span> <span class="ident">PrototypeAST</span>(<span class="string">"baz"</span>.<span class="ident">into</span>(), <span class="macro">vec!</span>[]); + + <span class="macro">assert_eq!</span>(<span class="ident">p</span>.<span class="ident">parse_extern</span>(), <span class="prelude-val">Ok</span>(<span class="ident">proto</span>)); + } +} +</pre></div> +</section><section id="search" class="content hidden"></section><div id="rustdoc-vars" data-root-path="../../" data-current-crate="llvm_kaleidoscope_rs" data-search-index-js="../../search-index.js" data-search-js="../../search.js"></div><script src="../../main.js"></script><script src="../../source-script.js"></script><script src="../../source-files.js"></script></body></html>
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