| <!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`."><title>lib.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="rustc_demangle" data-themes="" data-resource-suffix="" data-rustdoc-version="1.92.0 (ded5c06cf 2025-12-08)" data-channel="1.92.0" data-search-js="search-d69d8955.js" data-stringdex-js="stringdex-c3e638e9.js" data-settings-js="settings-c38705f0.js" ><script src="../../static.files/storage-e2aeef58.js"></script><script defer src="../../static.files/src-script-813739b1.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-ce535bd0.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">rustc_demangle/</div>lib.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-3"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="doccomment">//! Demangle Rust compiler symbol names. |
| <a href=#2 id=2 data-nosnippet>2</a>//! |
| <a href=#3 id=3 data-nosnippet>3</a>//! This crate provides a `demangle` function which will return a `Demangle` |
| <a href=#4 id=4 data-nosnippet>4</a>//! sentinel value that can be used to learn about the demangled version of a |
| <a href=#5 id=5 data-nosnippet>5</a>//! symbol name. The demangled representation will be the same as the original |
| <a href=#6 id=6 data-nosnippet>6</a>//! if it doesn't look like a mangled symbol name. |
| <a href=#7 id=7 data-nosnippet>7</a>//! |
| <a href=#8 id=8 data-nosnippet>8</a>//! `Demangle` can be formatted with the `Display` trait. The alternate |
| <a href=#9 id=9 data-nosnippet>9</a>//! modifier (`#`) can be used to format the symbol name without the |
| <a href=#10 id=10 data-nosnippet>10</a>//! trailing hash value. |
| <a href=#11 id=11 data-nosnippet>11</a>//! |
| <a href=#12 id=12 data-nosnippet>12</a>//! # Examples |
| <a href=#13 id=13 data-nosnippet>13</a>//! |
| <a href=#14 id=14 data-nosnippet>14</a>//! ``` |
| <a href=#15 id=15 data-nosnippet>15</a>//! use rustc_demangle::demangle; |
| <a href=#16 id=16 data-nosnippet>16</a>//! |
| <a href=#17 id=17 data-nosnippet>17</a>//! assert_eq!(demangle("_ZN4testE").to_string(), "test"); |
| <a href=#18 id=18 data-nosnippet>18</a>//! assert_eq!(demangle("_ZN3foo3barE").to_string(), "foo::bar"); |
| <a href=#19 id=19 data-nosnippet>19</a>//! assert_eq!(demangle("foo").to_string(), "foo"); |
| <a href=#20 id=20 data-nosnippet>20</a>//! // With hash |
| <a href=#21 id=21 data-nosnippet>21</a>//! assert_eq!(format!("{}", demangle("_ZN3foo17h05af221e174051e9E")), "foo::h05af221e174051e9"); |
| <a href=#22 id=22 data-nosnippet>22</a>//! // Without hash |
| <a href=#23 id=23 data-nosnippet>23</a>//! assert_eq!(format!("{:#}", demangle("_ZN3foo17h05af221e174051e9E")), "foo"); |
| <a href=#24 id=24 data-nosnippet>24</a>//! ``` |
| <a href=#25 id=25 data-nosnippet>25</a> |
| <a href=#26 id=26 data-nosnippet>26</a></span><span class="attr">#![no_std] |
| <a href=#27 id=27 data-nosnippet>27</a>#![deny(missing_docs)] |
| <a href=#28 id=28 data-nosnippet>28</a>#![cfg_attr(docsrs, feature(doc_cfg))] |
| <a href=#29 id=29 data-nosnippet>29</a> |
| <a href=#30 id=30 data-nosnippet>30</a>#[cfg(any(test, feature = <span class="string">"std"</span>))] |
| <a href=#31 id=31 data-nosnippet>31</a>#[macro_use] |
| <a href=#32 id=32 data-nosnippet>32</a></span><span class="kw">extern crate </span>std; |
| <a href=#33 id=33 data-nosnippet>33</a> |
| <a href=#34 id=34 data-nosnippet>34</a><span class="comment">// HACK(eddyb) helper macros for tests. |
| <a href=#35 id=35 data-nosnippet>35</a></span><span class="attr">#[cfg(test)] |
| <a href=#36 id=36 data-nosnippet>36</a></span><span class="macro">macro_rules!</span> assert_contains { |
| <a href=#37 id=37 data-nosnippet>37</a> (<span class="macro-nonterminal">$s</span>:expr, <span class="macro-nonterminal">$needle</span>:expr) => {{ |
| <a href=#38 id=38 data-nosnippet>38</a> <span class="kw">let </span>(s, needle) = (<span class="macro-nonterminal">$s</span>, <span class="macro-nonterminal">$needle</span>); |
| <a href=#39 id=39 data-nosnippet>39</a> <span class="macro">assert!</span>( |
| <a href=#40 id=40 data-nosnippet>40</a> s.contains(needle), |
| <a href=#41 id=41 data-nosnippet>41</a> <span class="string">"{:?} should've contained {:?}"</span>, |
| <a href=#42 id=42 data-nosnippet>42</a> s, |
| <a href=#43 id=43 data-nosnippet>43</a> needle |
| <a href=#44 id=44 data-nosnippet>44</a> ); |
| <a href=#45 id=45 data-nosnippet>45</a> }}; |
| <a href=#46 id=46 data-nosnippet>46</a>} |
| <a href=#47 id=47 data-nosnippet>47</a><span class="attr">#[cfg(test)] |
| <a href=#48 id=48 data-nosnippet>48</a></span><span class="macro">macro_rules!</span> assert_ends_with { |
| <a href=#49 id=49 data-nosnippet>49</a> (<span class="macro-nonterminal">$s</span>:expr, <span class="macro-nonterminal">$suffix</span>:expr) => {{ |
| <a href=#50 id=50 data-nosnippet>50</a> <span class="kw">let </span>(s, suffix) = (<span class="macro-nonterminal">$s</span>, <span class="macro-nonterminal">$suffix</span>); |
| <a href=#51 id=51 data-nosnippet>51</a> <span class="macro">assert!</span>( |
| <a href=#52 id=52 data-nosnippet>52</a> s.ends_with(suffix), |
| <a href=#53 id=53 data-nosnippet>53</a> <span class="string">"{:?} should've ended in {:?}"</span>, |
| <a href=#54 id=54 data-nosnippet>54</a> s, |
| <a href=#55 id=55 data-nosnippet>55</a> suffix |
| <a href=#56 id=56 data-nosnippet>56</a> ); |
| <a href=#57 id=57 data-nosnippet>57</a> }}; |
| <a href=#58 id=58 data-nosnippet>58</a>} |
| <a href=#59 id=59 data-nosnippet>59</a> |
| <a href=#60 id=60 data-nosnippet>60</a><span class="kw">mod </span>legacy; |
| <a href=#61 id=61 data-nosnippet>61</a><span class="kw">mod </span>v0; |
| <a href=#62 id=62 data-nosnippet>62</a> |
| <a href=#63 id=63 data-nosnippet>63</a><span class="kw">use </span>core::fmt::{<span class="self">self</span>, Write <span class="kw">as _</span>}; |
| <a href=#64 id=64 data-nosnippet>64</a> |
| <a href=#65 id=65 data-nosnippet>65</a><span class="doccomment">/// Representation of a demangled symbol name. |
| <a href=#66 id=66 data-nosnippet>66</a></span><span class="kw">pub struct </span>Demangle<<span class="lifetime">'a</span>> { |
| <a href=#67 id=67 data-nosnippet>67</a> style: <span class="prelude-ty">Option</span><DemangleStyle<<span class="lifetime">'a</span>>>, |
| <a href=#68 id=68 data-nosnippet>68</a> original: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| <a href=#69 id=69 data-nosnippet>69</a> suffix: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| <a href=#70 id=70 data-nosnippet>70</a>} |
| <a href=#71 id=71 data-nosnippet>71</a> |
| <a href=#72 id=72 data-nosnippet>72</a><span class="kw">enum </span>DemangleStyle<<span class="lifetime">'a</span>> { |
| <a href=#73 id=73 data-nosnippet>73</a> Legacy(legacy::Demangle<<span class="lifetime">'a</span>>), |
| <a href=#74 id=74 data-nosnippet>74</a> V0(v0::Demangle<<span class="lifetime">'a</span>>), |
| <a href=#75 id=75 data-nosnippet>75</a>} |
| <a href=#76 id=76 data-nosnippet>76</a> |
| <a href=#77 id=77 data-nosnippet>77</a><span class="doccomment">/// De-mangles a Rust symbol into a more readable version |
| <a href=#78 id=78 data-nosnippet>78</a>/// |
| <a href=#79 id=79 data-nosnippet>79</a>/// This function will take a **mangled** symbol and return a value. When printed, |
| <a href=#80 id=80 data-nosnippet>80</a>/// the de-mangled version will be written. If the symbol does not look like |
| <a href=#81 id=81 data-nosnippet>81</a>/// a mangled symbol, the original value will be written instead. |
| <a href=#82 id=82 data-nosnippet>82</a>/// |
| <a href=#83 id=83 data-nosnippet>83</a>/// # Examples |
| <a href=#84 id=84 data-nosnippet>84</a>/// |
| <a href=#85 id=85 data-nosnippet>85</a>/// ``` |
| <a href=#86 id=86 data-nosnippet>86</a>/// use rustc_demangle::demangle; |
| <a href=#87 id=87 data-nosnippet>87</a>/// |
| <a href=#88 id=88 data-nosnippet>88</a>/// assert_eq!(demangle("_ZN4testE").to_string(), "test"); |
| <a href=#89 id=89 data-nosnippet>89</a>/// assert_eq!(demangle("_ZN3foo3barE").to_string(), "foo::bar"); |
| <a href=#90 id=90 data-nosnippet>90</a>/// assert_eq!(demangle("foo").to_string(), "foo"); |
| <a href=#91 id=91 data-nosnippet>91</a>/// ``` |
| <a href=#92 id=92 data-nosnippet>92</a></span><span class="kw">pub fn </span>demangle(<span class="kw-2">mut </span>s: <span class="kw-2">&</span>str) -> Demangle { |
| <a href=#93 id=93 data-nosnippet>93</a> <span class="comment">// During ThinLTO LLVM may import and rename internal symbols, so strip out |
| <a href=#94 id=94 data-nosnippet>94</a> // those endings first as they're one of the last manglings applied to symbol |
| <a href=#95 id=95 data-nosnippet>95</a> // names. |
| <a href=#96 id=96 data-nosnippet>96</a> </span><span class="kw">let </span>llvm = <span class="string">".llvm."</span>; |
| <a href=#97 id=97 data-nosnippet>97</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(i) = s.find(llvm) { |
| <a href=#98 id=98 data-nosnippet>98</a> <span class="kw">let </span>candidate = <span class="kw-2">&</span>s[i + llvm.len()..]; |
| <a href=#99 id=99 data-nosnippet>99</a> <span class="kw">let </span>all_hex = candidate.chars().all(|c| <span class="kw">match </span>c { |
| <a href=#100 id=100 data-nosnippet>100</a> <span class="string">'A'</span>..=<span class="string">'F' </span>| <span class="string">'0'</span>..=<span class="string">'9' </span>| <span class="string">'@' </span>=> <span class="bool-val">true</span>, |
| <a href=#101 id=101 data-nosnippet>101</a> <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| <a href=#102 id=102 data-nosnippet>102</a> }); |
| <a href=#103 id=103 data-nosnippet>103</a> |
| <a href=#104 id=104 data-nosnippet>104</a> <span class="kw">if </span>all_hex { |
| <a href=#105 id=105 data-nosnippet>105</a> s = <span class="kw-2">&</span>s[..i]; |
| <a href=#106 id=106 data-nosnippet>106</a> } |
| <a href=#107 id=107 data-nosnippet>107</a> } |
| <a href=#108 id=108 data-nosnippet>108</a> |
| <a href=#109 id=109 data-nosnippet>109</a> <span class="kw">let </span><span class="kw-2">mut </span>suffix = <span class="string">""</span>; |
| <a href=#110 id=110 data-nosnippet>110</a> <span class="kw">let </span><span class="kw-2">mut </span>style = <span class="kw">match </span>legacy::demangle(s) { |
| <a href=#111 id=111 data-nosnippet>111</a> <span class="prelude-val">Ok</span>((d, s)) => { |
| <a href=#112 id=112 data-nosnippet>112</a> suffix = s; |
| <a href=#113 id=113 data-nosnippet>113</a> <span class="prelude-val">Some</span>(DemangleStyle::Legacy(d)) |
| <a href=#114 id=114 data-nosnippet>114</a> } |
| <a href=#115 id=115 data-nosnippet>115</a> <span class="prelude-val">Err</span>(()) => <span class="kw">match </span>v0::demangle(s) { |
| <a href=#116 id=116 data-nosnippet>116</a> <span class="prelude-val">Ok</span>((d, s)) => { |
| <a href=#117 id=117 data-nosnippet>117</a> suffix = s; |
| <a href=#118 id=118 data-nosnippet>118</a> <span class="prelude-val">Some</span>(DemangleStyle::V0(d)) |
| <a href=#119 id=119 data-nosnippet>119</a> } |
| <a href=#120 id=120 data-nosnippet>120</a> <span class="comment">// FIXME(eddyb) would it make sense to treat an unknown-validity |
| <a href=#121 id=121 data-nosnippet>121</a> // symbol (e.g. one that errored with `RecursedTooDeep`) as |
| <a href=#122 id=122 data-nosnippet>122</a> // v0-mangled, and have the error show up in the demangling? |
| <a href=#123 id=123 data-nosnippet>123</a> // (that error already gets past this initial check, and therefore |
| <a href=#124 id=124 data-nosnippet>124</a> // will show up in the demangling, if hidden behind a backref) |
| <a href=#125 id=125 data-nosnippet>125</a> </span><span class="prelude-val">Err</span>(v0::ParseError::Invalid) | <span class="prelude-val">Err</span>(v0::ParseError::RecursedTooDeep) => <span class="prelude-val">None</span>, |
| <a href=#126 id=126 data-nosnippet>126</a> }, |
| <a href=#127 id=127 data-nosnippet>127</a> }; |
| <a href=#128 id=128 data-nosnippet>128</a> |
| <a href=#129 id=129 data-nosnippet>129</a> <span class="comment">// Output like LLVM IR adds extra period-delimited words. See if |
| <a href=#130 id=130 data-nosnippet>130</a> // we are in that case and save the trailing words if so. |
| <a href=#131 id=131 data-nosnippet>131</a> </span><span class="kw">if </span>!suffix.is_empty() { |
| <a href=#132 id=132 data-nosnippet>132</a> <span class="kw">if </span>suffix.starts_with(<span class="string">'.'</span>) && is_symbol_like(suffix) { |
| <a href=#133 id=133 data-nosnippet>133</a> <span class="comment">// Keep the suffix. |
| <a href=#134 id=134 data-nosnippet>134</a> </span>} <span class="kw">else </span>{ |
| <a href=#135 id=135 data-nosnippet>135</a> <span class="comment">// Reset the suffix and invalidate the demangling. |
| <a href=#136 id=136 data-nosnippet>136</a> </span>suffix = <span class="string">""</span>; |
| <a href=#137 id=137 data-nosnippet>137</a> style = <span class="prelude-val">None</span>; |
| <a href=#138 id=138 data-nosnippet>138</a> } |
| <a href=#139 id=139 data-nosnippet>139</a> } |
| <a href=#140 id=140 data-nosnippet>140</a> |
| <a href=#141 id=141 data-nosnippet>141</a> Demangle { |
| <a href=#142 id=142 data-nosnippet>142</a> style, |
| <a href=#143 id=143 data-nosnippet>143</a> original: s, |
| <a href=#144 id=144 data-nosnippet>144</a> suffix, |
| <a href=#145 id=145 data-nosnippet>145</a> } |
| <a href=#146 id=146 data-nosnippet>146</a>} |
| <a href=#147 id=147 data-nosnippet>147</a> |
| <a href=#148 id=148 data-nosnippet>148</a><span class="attr">#[cfg(feature = <span class="string">"std"</span>)] |
| <a href=#149 id=149 data-nosnippet>149</a></span><span class="kw">fn </span>demangle_line( |
| <a href=#150 id=150 data-nosnippet>150</a> line: <span class="kw-2">&</span>str, |
| <a href=#151 id=151 data-nosnippet>151</a> output: <span class="kw-2">&mut </span><span class="kw">impl </span>std::io::Write, |
| <a href=#152 id=152 data-nosnippet>152</a> include_hash: bool, |
| <a href=#153 id=153 data-nosnippet>153</a>) -> std::io::Result<()> { |
| <a href=#154 id=154 data-nosnippet>154</a> <span class="kw">let </span><span class="kw-2">mut </span>head = <span class="number">0</span>; |
| <a href=#155 id=155 data-nosnippet>155</a> <span class="kw">while </span>head < line.len() { |
| <a href=#156 id=156 data-nosnippet>156</a> <span class="comment">// Move to the next potential match |
| <a href=#157 id=157 data-nosnippet>157</a> </span><span class="kw">let </span>next_head = <span class="kw">match </span>(line[head..].find(<span class="string">"_ZN"</span>), line[head..].find(<span class="string">"_R"</span>)) { |
| <a href=#158 id=158 data-nosnippet>158</a> (<span class="prelude-val">Some</span>(idx), <span class="prelude-val">None</span>) | (<span class="prelude-val">None</span>, <span class="prelude-val">Some</span>(idx)) => head + idx, |
| <a href=#159 id=159 data-nosnippet>159</a> (<span class="prelude-val">Some</span>(idx1), <span class="prelude-val">Some</span>(idx2)) => head + idx1.min(idx2), |
| <a href=#160 id=160 data-nosnippet>160</a> (<span class="prelude-val">None</span>, <span class="prelude-val">None</span>) => { |
| <a href=#161 id=161 data-nosnippet>161</a> <span class="comment">// No more matches... |
| <a href=#162 id=162 data-nosnippet>162</a> </span>line.len() |
| <a href=#163 id=163 data-nosnippet>163</a> } |
| <a href=#164 id=164 data-nosnippet>164</a> }; |
| <a href=#165 id=165 data-nosnippet>165</a> output.write_all(line[head..next_head].as_bytes())<span class="question-mark">?</span>; |
| <a href=#166 id=166 data-nosnippet>166</a> head = next_head; |
| <a href=#167 id=167 data-nosnippet>167</a> <span class="comment">// Find the non-matching character. |
| <a href=#168 id=168 data-nosnippet>168</a> // |
| <a href=#169 id=169 data-nosnippet>169</a> // If we do not find a character, then until the end of the line is the |
| <a href=#170 id=170 data-nosnippet>170</a> // thing to demangle. |
| <a href=#171 id=171 data-nosnippet>171</a> </span><span class="kw">let </span>match_end = line[head..] |
| <a href=#172 id=172 data-nosnippet>172</a> .find(|ch: char| !(ch == <span class="string">'$' </span>|| ch == <span class="string">'.' </span>|| ch == <span class="string">'_' </span>|| ch.is_ascii_alphanumeric())) |
| <a href=#173 id=173 data-nosnippet>173</a> .map(|idx| head + idx) |
| <a href=#174 id=174 data-nosnippet>174</a> .unwrap_or(line.len()); |
| <a href=#175 id=175 data-nosnippet>175</a> |
| <a href=#176 id=176 data-nosnippet>176</a> <span class="kw">let </span>mangled = <span class="kw-2">&</span>line[head..match_end]; |
| <a href=#177 id=177 data-nosnippet>177</a> head = head + mangled.len(); |
| <a href=#178 id=178 data-nosnippet>178</a> <span class="kw">if let </span><span class="prelude-val">Ok</span>(demangled) = try_demangle(mangled) { |
| <a href=#179 id=179 data-nosnippet>179</a> <span class="kw">if </span>include_hash { |
| <a href=#180 id=180 data-nosnippet>180</a> <span class="macro">write!</span>(output, <span class="string">"{}"</span>, demangled)<span class="question-mark">?</span>; |
| <a href=#181 id=181 data-nosnippet>181</a> } <span class="kw">else </span>{ |
| <a href=#182 id=182 data-nosnippet>182</a> <span class="macro">write!</span>(output, <span class="string">"{:#}"</span>, demangled)<span class="question-mark">?</span>; |
| <a href=#183 id=183 data-nosnippet>183</a> } |
| <a href=#184 id=184 data-nosnippet>184</a> } <span class="kw">else </span>{ |
| <a href=#185 id=185 data-nosnippet>185</a> output.write_all(mangled.as_bytes())<span class="question-mark">?</span>; |
| <a href=#186 id=186 data-nosnippet>186</a> } |
| <a href=#187 id=187 data-nosnippet>187</a> } |
| <a href=#188 id=188 data-nosnippet>188</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#189 id=189 data-nosnippet>189</a>} |
| <a href=#190 id=190 data-nosnippet>190</a> |
| <a href=#191 id=191 data-nosnippet>191</a><span class="doccomment">/// Process a stream of data from `input` into the provided `output`, demangling any symbols found |
| <a href=#192 id=192 data-nosnippet>192</a>/// within. |
| <a href=#193 id=193 data-nosnippet>193</a>/// |
| <a href=#194 id=194 data-nosnippet>194</a>/// Note that the underlying implementation will perform many relatively small writes to the |
| <a href=#195 id=195 data-nosnippet>195</a>/// output. If the output is expensive to write to (e.g., requires syscalls), consider using |
| <a href=#196 id=196 data-nosnippet>196</a>/// `std::io::BufWriter`. |
| <a href=#197 id=197 data-nosnippet>197</a></span><span class="attr">#[cfg(feature = <span class="string">"std"</span>)] |
| <a href=#198 id=198 data-nosnippet>198</a>#[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"std"</span>)))] |
| <a href=#199 id=199 data-nosnippet>199</a></span><span class="kw">pub fn </span>demangle_stream<R: std::io::BufRead, W: std::io::Write>( |
| <a href=#200 id=200 data-nosnippet>200</a> input: <span class="kw-2">&mut </span>R, |
| <a href=#201 id=201 data-nosnippet>201</a> output: <span class="kw-2">&mut </span>W, |
| <a href=#202 id=202 data-nosnippet>202</a> include_hash: bool, |
| <a href=#203 id=203 data-nosnippet>203</a>) -> std::io::Result<()> { |
| <a href=#204 id=204 data-nosnippet>204</a> <span class="kw">let </span><span class="kw-2">mut </span>buf = std::string::String::new(); |
| <a href=#205 id=205 data-nosnippet>205</a> <span class="comment">// We read in lines to reduce the memory usage at any time. |
| <a href=#206 id=206 data-nosnippet>206</a> // |
| <a href=#207 id=207 data-nosnippet>207</a> // demangle_line is also more efficient with relatively small buffers as it will copy around |
| <a href=#208 id=208 data-nosnippet>208</a> // trailing data during demangling. In the future we might directly stream to the output but at |
| <a href=#209 id=209 data-nosnippet>209</a> // least right now that seems to be less efficient. |
| <a href=#210 id=210 data-nosnippet>210</a> </span><span class="kw">while </span>input.read_line(<span class="kw-2">&mut </span>buf)<span class="question-mark">? </span>> <span class="number">0 </span>{ |
| <a href=#211 id=211 data-nosnippet>211</a> demangle_line(<span class="kw-2">&</span>buf, output, include_hash)<span class="question-mark">?</span>; |
| <a href=#212 id=212 data-nosnippet>212</a> buf.clear(); |
| <a href=#213 id=213 data-nosnippet>213</a> } |
| <a href=#214 id=214 data-nosnippet>214</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#215 id=215 data-nosnippet>215</a>} |
| <a href=#216 id=216 data-nosnippet>216</a> |
| <a href=#217 id=217 data-nosnippet>217</a><span class="doccomment">/// Error returned from the `try_demangle` function below when demangling fails. |
| <a href=#218 id=218 data-nosnippet>218</a></span><span class="attr">#[derive(Debug, Clone)] |
| <a href=#219 id=219 data-nosnippet>219</a></span><span class="kw">pub struct </span>TryDemangleError { |
| <a href=#220 id=220 data-nosnippet>220</a> _priv: (), |
| <a href=#221 id=221 data-nosnippet>221</a>} |
| <a href=#222 id=222 data-nosnippet>222</a> |
| <a href=#223 id=223 data-nosnippet>223</a><span class="doccomment">/// The same as `demangle`, except return an `Err` if the string does not appear |
| <a href=#224 id=224 data-nosnippet>224</a>/// to be a Rust symbol, rather than "demangling" the given string as a no-op. |
| <a href=#225 id=225 data-nosnippet>225</a>/// |
| <a href=#226 id=226 data-nosnippet>226</a>/// ``` |
| <a href=#227 id=227 data-nosnippet>227</a>/// extern crate rustc_demangle; |
| <a href=#228 id=228 data-nosnippet>228</a>/// |
| <a href=#229 id=229 data-nosnippet>229</a>/// let not_a_rust_symbol = "la la la"; |
| <a href=#230 id=230 data-nosnippet>230</a>/// |
| <a href=#231 id=231 data-nosnippet>231</a>/// // The `try_demangle` function will reject strings which are not Rust symbols. |
| <a href=#232 id=232 data-nosnippet>232</a>/// assert!(rustc_demangle::try_demangle(not_a_rust_symbol).is_err()); |
| <a href=#233 id=233 data-nosnippet>233</a>/// |
| <a href=#234 id=234 data-nosnippet>234</a>/// // While `demangle` will just pass the non-symbol through as a no-op. |
| <a href=#235 id=235 data-nosnippet>235</a>/// assert_eq!(rustc_demangle::demangle(not_a_rust_symbol).as_str(), not_a_rust_symbol); |
| <a href=#236 id=236 data-nosnippet>236</a>/// ``` |
| <a href=#237 id=237 data-nosnippet>237</a></span><span class="kw">pub fn </span>try_demangle(s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Demangle, TryDemangleError> { |
| <a href=#238 id=238 data-nosnippet>238</a> <span class="kw">let </span>sym = demangle(s); |
| <a href=#239 id=239 data-nosnippet>239</a> <span class="kw">if </span>sym.style.is_some() { |
| <a href=#240 id=240 data-nosnippet>240</a> <span class="prelude-val">Ok</span>(sym) |
| <a href=#241 id=241 data-nosnippet>241</a> } <span class="kw">else </span>{ |
| <a href=#242 id=242 data-nosnippet>242</a> <span class="prelude-val">Err</span>(TryDemangleError { _priv: () }) |
| <a href=#243 id=243 data-nosnippet>243</a> } |
| <a href=#244 id=244 data-nosnippet>244</a>} |
| <a href=#245 id=245 data-nosnippet>245</a> |
| <a href=#246 id=246 data-nosnippet>246</a><span class="kw">impl</span><<span class="lifetime">'a</span>> Demangle<<span class="lifetime">'a</span>> { |
| <a href=#247 id=247 data-nosnippet>247</a> <span class="doccomment">/// Returns the underlying string that's being demangled. |
| <a href=#248 id=248 data-nosnippet>248</a> </span><span class="kw">pub fn </span>as_str(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span><span class="lifetime">'a </span>str { |
| <a href=#249 id=249 data-nosnippet>249</a> <span class="self">self</span>.original |
| <a href=#250 id=250 data-nosnippet>250</a> } |
| <a href=#251 id=251 data-nosnippet>251</a>} |
| <a href=#252 id=252 data-nosnippet>252</a> |
| <a href=#253 id=253 data-nosnippet>253</a><span class="kw">fn </span>is_symbol_like(s: <span class="kw-2">&</span>str) -> bool { |
| <a href=#254 id=254 data-nosnippet>254</a> s.chars().all(|c| { |
| <a href=#255 id=255 data-nosnippet>255</a> <span class="comment">// Once `char::is_ascii_punctuation` and `char::is_ascii_alphanumeric` |
| <a href=#256 id=256 data-nosnippet>256</a> // have been stable for long enough, use those instead for clarity |
| <a href=#257 id=257 data-nosnippet>257</a> </span>is_ascii_alphanumeric(c) || is_ascii_punctuation(c) |
| <a href=#258 id=258 data-nosnippet>258</a> }) |
| <a href=#259 id=259 data-nosnippet>259</a>} |
| <a href=#260 id=260 data-nosnippet>260</a> |
| <a href=#261 id=261 data-nosnippet>261</a><span class="comment">// Copied from the documentation of `char::is_ascii_alphanumeric` |
| <a href=#262 id=262 data-nosnippet>262</a></span><span class="kw">fn </span>is_ascii_alphanumeric(c: char) -> bool { |
| <a href=#263 id=263 data-nosnippet>263</a> <span class="kw">match </span>c { |
| <a href=#264 id=264 data-nosnippet>264</a> <span class="string">'\u{0041}'</span>..=<span class="string">'\u{005A}' </span>| <span class="string">'\u{0061}'</span>..=<span class="string">'\u{007A}' </span>| <span class="string">'\u{0030}'</span>..=<span class="string">'\u{0039}' </span>=> <span class="bool-val">true</span>, |
| <a href=#265 id=265 data-nosnippet>265</a> <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| <a href=#266 id=266 data-nosnippet>266</a> } |
| <a href=#267 id=267 data-nosnippet>267</a>} |
| <a href=#268 id=268 data-nosnippet>268</a> |
| <a href=#269 id=269 data-nosnippet>269</a><span class="comment">// Copied from the documentation of `char::is_ascii_punctuation` |
| <a href=#270 id=270 data-nosnippet>270</a></span><span class="kw">fn </span>is_ascii_punctuation(c: char) -> bool { |
| <a href=#271 id=271 data-nosnippet>271</a> <span class="kw">match </span>c { |
| <a href=#272 id=272 data-nosnippet>272</a> <span class="string">'\u{0021}'</span>..=<span class="string">'\u{002F}' |
| <a href=#273 id=273 data-nosnippet>273</a> </span>| <span class="string">'\u{003A}'</span>..=<span class="string">'\u{0040}' |
| <a href=#274 id=274 data-nosnippet>274</a> </span>| <span class="string">'\u{005B}'</span>..=<span class="string">'\u{0060}' |
| <a href=#275 id=275 data-nosnippet>275</a> </span>| <span class="string">'\u{007B}'</span>..=<span class="string">'\u{007E}' </span>=> <span class="bool-val">true</span>, |
| <a href=#276 id=276 data-nosnippet>276</a> <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| <a href=#277 id=277 data-nosnippet>277</a> } |
| <a href=#278 id=278 data-nosnippet>278</a>} |
| <a href=#279 id=279 data-nosnippet>279</a> |
| <a href=#280 id=280 data-nosnippet>280</a><span class="kw">impl</span><<span class="lifetime">'a</span>> fmt::Display <span class="kw">for </span>DemangleStyle<<span class="lifetime">'a</span>> { |
| <a href=#281 id=281 data-nosnippet>281</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| <a href=#282 id=282 data-nosnippet>282</a> <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| <a href=#283 id=283 data-nosnippet>283</a> DemangleStyle::Legacy(<span class="kw-2">ref </span>d) => fmt::Display::fmt(d, f), |
| <a href=#284 id=284 data-nosnippet>284</a> DemangleStyle::V0(<span class="kw-2">ref </span>d) => fmt::Display::fmt(d, f), |
| <a href=#285 id=285 data-nosnippet>285</a> } |
| <a href=#286 id=286 data-nosnippet>286</a> } |
| <a href=#287 id=287 data-nosnippet>287</a>} |
| <a href=#288 id=288 data-nosnippet>288</a> |
| <a href=#289 id=289 data-nosnippet>289</a><span class="comment">// Maximum size of the symbol that we'll print. |
| <a href=#290 id=290 data-nosnippet>290</a></span><span class="kw">const </span>MAX_SIZE: usize = <span class="number">1_000_000</span>; |
| <a href=#291 id=291 data-nosnippet>291</a> |
| <a href=#292 id=292 data-nosnippet>292</a><span class="attr">#[derive(Copy, Clone, Debug)] |
| <a href=#293 id=293 data-nosnippet>293</a></span><span class="kw">struct </span>SizeLimitExhausted; |
| <a href=#294 id=294 data-nosnippet>294</a> |
| <a href=#295 id=295 data-nosnippet>295</a><span class="kw">struct </span>SizeLimitedFmtAdapter<F> { |
| <a href=#296 id=296 data-nosnippet>296</a> remaining: <span class="prelude-ty">Result</span><usize, SizeLimitExhausted>, |
| <a href=#297 id=297 data-nosnippet>297</a> inner: F, |
| <a href=#298 id=298 data-nosnippet>298</a>} |
| <a href=#299 id=299 data-nosnippet>299</a> |
| <a href=#300 id=300 data-nosnippet>300</a><span class="kw">impl</span><F: fmt::Write> fmt::Write <span class="kw">for </span>SizeLimitedFmtAdapter<F> { |
| <a href=#301 id=301 data-nosnippet>301</a> <span class="kw">fn </span>write_str(<span class="kw-2">&mut </span><span class="self">self</span>, s: <span class="kw-2">&</span>str) -> fmt::Result { |
| <a href=#302 id=302 data-nosnippet>302</a> <span class="self">self</span>.remaining = <span class="self">self |
| <a href=#303 id=303 data-nosnippet>303</a> </span>.remaining |
| <a href=#304 id=304 data-nosnippet>304</a> .and_then(|r| r.checked_sub(s.len()).ok_or(SizeLimitExhausted)); |
| <a href=#305 id=305 data-nosnippet>305</a> |
| <a href=#306 id=306 data-nosnippet>306</a> <span class="kw">match </span><span class="self">self</span>.remaining { |
| <a href=#307 id=307 data-nosnippet>307</a> <span class="prelude-val">Ok</span>(<span class="kw">_</span>) => <span class="self">self</span>.inner.write_str(s), |
| <a href=#308 id=308 data-nosnippet>308</a> <span class="prelude-val">Err</span>(SizeLimitExhausted) => <span class="prelude-val">Err</span>(fmt::Error), |
| <a href=#309 id=309 data-nosnippet>309</a> } |
| <a href=#310 id=310 data-nosnippet>310</a> } |
| <a href=#311 id=311 data-nosnippet>311</a>} |
| <a href=#312 id=312 data-nosnippet>312</a> |
| <a href=#313 id=313 data-nosnippet>313</a><span class="kw">impl</span><<span class="lifetime">'a</span>> fmt::Display <span class="kw">for </span>Demangle<<span class="lifetime">'a</span>> { |
| <a href=#314 id=314 data-nosnippet>314</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| <a href=#315 id=315 data-nosnippet>315</a> <span class="kw">match </span><span class="self">self</span>.style { |
| <a href=#316 id=316 data-nosnippet>316</a> <span class="prelude-val">None </span>=> f.write_str(<span class="self">self</span>.original)<span class="question-mark">?</span>, |
| <a href=#317 id=317 data-nosnippet>317</a> <span class="prelude-val">Some</span>(<span class="kw-2">ref </span>d) => { |
| <a href=#318 id=318 data-nosnippet>318</a> <span class="kw">let </span>alternate = f.alternate(); |
| <a href=#319 id=319 data-nosnippet>319</a> <span class="kw">let </span><span class="kw-2">mut </span>size_limited_fmt = SizeLimitedFmtAdapter { |
| <a href=#320 id=320 data-nosnippet>320</a> remaining: <span class="prelude-val">Ok</span>(MAX_SIZE), |
| <a href=#321 id=321 data-nosnippet>321</a> inner: <span class="kw-2">&mut *</span>f, |
| <a href=#322 id=322 data-nosnippet>322</a> }; |
| <a href=#323 id=323 data-nosnippet>323</a> <span class="kw">let </span>fmt_result = <span class="kw">if </span>alternate { |
| <a href=#324 id=324 data-nosnippet>324</a> <span class="macro">write!</span>(size_limited_fmt, <span class="string">"{:#}"</span>, d) |
| <a href=#325 id=325 data-nosnippet>325</a> } <span class="kw">else </span>{ |
| <a href=#326 id=326 data-nosnippet>326</a> <span class="macro">write!</span>(size_limited_fmt, <span class="string">"{}"</span>, d) |
| <a href=#327 id=327 data-nosnippet>327</a> }; |
| <a href=#328 id=328 data-nosnippet>328</a> <span class="kw">let </span>size_limit_result = size_limited_fmt.remaining.map(|<span class="kw">_</span>| ()); |
| <a href=#329 id=329 data-nosnippet>329</a> |
| <a href=#330 id=330 data-nosnippet>330</a> <span class="comment">// Translate a `fmt::Error` generated by `SizeLimitedFmtAdapter` |
| <a href=#331 id=331 data-nosnippet>331</a> // into an error message, instead of propagating it upwards |
| <a href=#332 id=332 data-nosnippet>332</a> // (which could cause panicking from inside e.g. `std::io::print`). |
| <a href=#333 id=333 data-nosnippet>333</a> </span><span class="kw">match </span>(fmt_result, size_limit_result) { |
| <a href=#334 id=334 data-nosnippet>334</a> (<span class="prelude-val">Err</span>(<span class="kw">_</span>), <span class="prelude-val">Err</span>(SizeLimitExhausted)) => f.write_str(<span class="string">"{size limit reached}"</span>)<span class="question-mark">?</span>, |
| <a href=#335 id=335 data-nosnippet>335</a> |
| <a href=#336 id=336 data-nosnippet>336</a> <span class="kw">_ </span>=> { |
| <a href=#337 id=337 data-nosnippet>337</a> fmt_result<span class="question-mark">?</span>; |
| <a href=#338 id=338 data-nosnippet>338</a> size_limit_result |
| <a href=#339 id=339 data-nosnippet>339</a> .expect(<span class="string">"`fmt::Error` from `SizeLimitedFmtAdapter` was discarded"</span>); |
| <a href=#340 id=340 data-nosnippet>340</a> } |
| <a href=#341 id=341 data-nosnippet>341</a> } |
| <a href=#342 id=342 data-nosnippet>342</a> } |
| <a href=#343 id=343 data-nosnippet>343</a> } |
| <a href=#344 id=344 data-nosnippet>344</a> f.write_str(<span class="self">self</span>.suffix) |
| <a href=#345 id=345 data-nosnippet>345</a> } |
| <a href=#346 id=346 data-nosnippet>346</a>} |
| <a href=#347 id=347 data-nosnippet>347</a> |
| <a href=#348 id=348 data-nosnippet>348</a><span class="kw">impl</span><<span class="lifetime">'a</span>> fmt::Debug <span class="kw">for </span>Demangle<<span class="lifetime">'a</span>> { |
| <a href=#349 id=349 data-nosnippet>349</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| <a href=#350 id=350 data-nosnippet>350</a> fmt::Display::fmt(<span class="self">self</span>, f) |
| <a href=#351 id=351 data-nosnippet>351</a> } |
| <a href=#352 id=352 data-nosnippet>352</a>} |
| <a href=#353 id=353 data-nosnippet>353</a> |
| <a href=#354 id=354 data-nosnippet>354</a><span class="attr">#[cfg(test)] |
| <a href=#355 id=355 data-nosnippet>355</a></span><span class="kw">mod </span>tests { |
| <a href=#356 id=356 data-nosnippet>356</a> <span class="kw">use </span>std::prelude::v1::<span class="kw-2">*</span>; |
| <a href=#357 id=357 data-nosnippet>357</a> |
| <a href=#358 id=358 data-nosnippet>358</a> <span class="macro">macro_rules!</span> t { |
| <a href=#359 id=359 data-nosnippet>359</a> (<span class="macro-nonterminal">$a</span>:expr, <span class="macro-nonterminal">$b</span>:expr) => { |
| <a href=#360 id=360 data-nosnippet>360</a> <span class="macro">assert!</span>(ok(<span class="macro-nonterminal">$a</span>, <span class="macro-nonterminal">$b</span>)) |
| <a href=#361 id=361 data-nosnippet>361</a> }; |
| <a href=#362 id=362 data-nosnippet>362</a> } |
| <a href=#363 id=363 data-nosnippet>363</a> |
| <a href=#364 id=364 data-nosnippet>364</a> <span class="macro">macro_rules!</span> t_err { |
| <a href=#365 id=365 data-nosnippet>365</a> (<span class="macro-nonterminal">$a</span>:expr) => { |
| <a href=#366 id=366 data-nosnippet>366</a> <span class="macro">assert!</span>(ok_err(<span class="macro-nonterminal">$a</span>)) |
| <a href=#367 id=367 data-nosnippet>367</a> }; |
| <a href=#368 id=368 data-nosnippet>368</a> } |
| <a href=#369 id=369 data-nosnippet>369</a> |
| <a href=#370 id=370 data-nosnippet>370</a> <span class="macro">macro_rules!</span> t_nohash { |
| <a href=#371 id=371 data-nosnippet>371</a> (<span class="macro-nonterminal">$a</span>:expr, <span class="macro-nonterminal">$b</span>:expr) => {{ |
| <a href=#372 id=372 data-nosnippet>372</a> <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:#}"</span>, <span class="kw">super</span>::demangle(<span class="macro-nonterminal">$a</span>)), <span class="macro-nonterminal">$b</span>); |
| <a href=#373 id=373 data-nosnippet>373</a> }}; |
| <a href=#374 id=374 data-nosnippet>374</a> } |
| <a href=#375 id=375 data-nosnippet>375</a> |
| <a href=#376 id=376 data-nosnippet>376</a> <span class="kw">fn </span>ok(sym: <span class="kw-2">&</span>str, expected: <span class="kw-2">&</span>str) -> bool { |
| <a href=#377 id=377 data-nosnippet>377</a> <span class="kw">match </span><span class="kw">super</span>::try_demangle(sym) { |
| <a href=#378 id=378 data-nosnippet>378</a> <span class="prelude-val">Ok</span>(s) => { |
| <a href=#379 id=379 data-nosnippet>379</a> <span class="kw">if </span>s.to_string() == expected { |
| <a href=#380 id=380 data-nosnippet>380</a> <span class="bool-val">true |
| <a href=#381 id=381 data-nosnippet>381</a> </span>} <span class="kw">else </span>{ |
| <a href=#382 id=382 data-nosnippet>382</a> <span class="macro">println!</span>(<span class="string">"\n{}\n!=\n{}\n"</span>, s, expected); |
| <a href=#383 id=383 data-nosnippet>383</a> <span class="bool-val">false |
| <a href=#384 id=384 data-nosnippet>384</a> </span>} |
| <a href=#385 id=385 data-nosnippet>385</a> } |
| <a href=#386 id=386 data-nosnippet>386</a> <span class="prelude-val">Err</span>(<span class="kw">_</span>) => { |
| <a href=#387 id=387 data-nosnippet>387</a> <span class="macro">println!</span>(<span class="string">"error demangling"</span>); |
| <a href=#388 id=388 data-nosnippet>388</a> <span class="bool-val">false |
| <a href=#389 id=389 data-nosnippet>389</a> </span>} |
| <a href=#390 id=390 data-nosnippet>390</a> } |
| <a href=#391 id=391 data-nosnippet>391</a> } |
| <a href=#392 id=392 data-nosnippet>392</a> |
| <a href=#393 id=393 data-nosnippet>393</a> <span class="kw">fn </span>ok_err(sym: <span class="kw-2">&</span>str) -> bool { |
| <a href=#394 id=394 data-nosnippet>394</a> <span class="kw">match </span><span class="kw">super</span>::try_demangle(sym) { |
| <a href=#395 id=395 data-nosnippet>395</a> <span class="prelude-val">Ok</span>(<span class="kw">_</span>) => { |
| <a href=#396 id=396 data-nosnippet>396</a> <span class="macro">println!</span>(<span class="string">"succeeded in demangling"</span>); |
| <a href=#397 id=397 data-nosnippet>397</a> <span class="bool-val">false |
| <a href=#398 id=398 data-nosnippet>398</a> </span>} |
| <a href=#399 id=399 data-nosnippet>399</a> <span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="kw">super</span>::demangle(sym).to_string() == sym, |
| <a href=#400 id=400 data-nosnippet>400</a> } |
| <a href=#401 id=401 data-nosnippet>401</a> } |
| <a href=#402 id=402 data-nosnippet>402</a> |
| <a href=#403 id=403 data-nosnippet>403</a> <span class="attr">#[test] |
| <a href=#404 id=404 data-nosnippet>404</a> </span><span class="kw">fn </span>demangle() { |
| <a href=#405 id=405 data-nosnippet>405</a> <span class="macro">t_err!</span>(<span class="string">"test"</span>); |
| <a href=#406 id=406 data-nosnippet>406</a> <span class="macro">t!</span>(<span class="string">"_ZN4testE"</span>, <span class="string">"test"</span>); |
| <a href=#407 id=407 data-nosnippet>407</a> <span class="macro">t_err!</span>(<span class="string">"_ZN4test"</span>); |
| <a href=#408 id=408 data-nosnippet>408</a> <span class="macro">t!</span>(<span class="string">"_ZN4test1a2bcE"</span>, <span class="string">"test::a::bc"</span>); |
| <a href=#409 id=409 data-nosnippet>409</a> } |
| <a href=#410 id=410 data-nosnippet>410</a> |
| <a href=#411 id=411 data-nosnippet>411</a> <span class="attr">#[test] |
| <a href=#412 id=412 data-nosnippet>412</a> </span><span class="kw">fn </span>demangle_dollars() { |
| <a href=#413 id=413 data-nosnippet>413</a> <span class="macro">t!</span>(<span class="string">"_ZN4$RP$E"</span>, <span class="string">")"</span>); |
| <a href=#414 id=414 data-nosnippet>414</a> <span class="macro">t!</span>(<span class="string">"_ZN8$RF$testE"</span>, <span class="string">"&test"</span>); |
| <a href=#415 id=415 data-nosnippet>415</a> <span class="macro">t!</span>(<span class="string">"_ZN8$BP$test4foobE"</span>, <span class="string">"*test::foob"</span>); |
| <a href=#416 id=416 data-nosnippet>416</a> <span class="macro">t!</span>(<span class="string">"_ZN9$u20$test4foobE"</span>, <span class="string">" test::foob"</span>); |
| <a href=#417 id=417 data-nosnippet>417</a> <span class="macro">t!</span>(<span class="string">"_ZN35Bar$LT$$u5b$u32$u3b$$u20$4$u5d$$GT$E"</span>, <span class="string">"Bar<[u32; 4]>"</span>); |
| <a href=#418 id=418 data-nosnippet>418</a> } |
| <a href=#419 id=419 data-nosnippet>419</a> |
| <a href=#420 id=420 data-nosnippet>420</a> <span class="attr">#[test] |
| <a href=#421 id=421 data-nosnippet>421</a> </span><span class="kw">fn </span>demangle_many_dollars() { |
| <a href=#422 id=422 data-nosnippet>422</a> <span class="macro">t!</span>(<span class="string">"_ZN13test$u20$test4foobE"</span>, <span class="string">"test test::foob"</span>); |
| <a href=#423 id=423 data-nosnippet>423</a> <span class="macro">t!</span>(<span class="string">"_ZN12test$BP$test4foobE"</span>, <span class="string">"test*test::foob"</span>); |
| <a href=#424 id=424 data-nosnippet>424</a> } |
| <a href=#425 id=425 data-nosnippet>425</a> |
| <a href=#426 id=426 data-nosnippet>426</a> <span class="attr">#[test] |
| <a href=#427 id=427 data-nosnippet>427</a> </span><span class="kw">fn </span>demangle_osx() { |
| <a href=#428 id=428 data-nosnippet>428</a> <span class="macro">t!</span>( |
| <a href=#429 id=429 data-nosnippet>429</a> <span class="string">"__ZN5alloc9allocator6Layout9for_value17h02a996811f781011E"</span>, |
| <a href=#430 id=430 data-nosnippet>430</a> <span class="string">"alloc::allocator::Layout::for_value::h02a996811f781011" |
| <a href=#431 id=431 data-nosnippet>431</a> </span>); |
| <a href=#432 id=432 data-nosnippet>432</a> <span class="macro">t!</span>(<span class="string">"__ZN38_$LT$core..option..Option$LT$T$GT$$GT$6unwrap18_MSG_FILE_LINE_COL17haf7cb8d5824ee659E"</span>, <span class="string">"<core::option::Option<T>>::unwrap::_MSG_FILE_LINE_COL::haf7cb8d5824ee659"</span>); |
| <a href=#433 id=433 data-nosnippet>433</a> <span class="macro">t!</span>(<span class="string">"__ZN4core5slice89_$LT$impl$u20$core..iter..traits..IntoIterator$u20$for$u20$$RF$$u27$a$u20$$u5b$T$u5d$$GT$9into_iter17h450e234d27262170E"</span>, <span class="string">"core::slice::<impl core::iter::traits::IntoIterator for &'a [T]>::into_iter::h450e234d27262170"</span>); |
| <a href=#434 id=434 data-nosnippet>434</a> } |
| <a href=#435 id=435 data-nosnippet>435</a> |
| <a href=#436 id=436 data-nosnippet>436</a> <span class="attr">#[test] |
| <a href=#437 id=437 data-nosnippet>437</a> </span><span class="kw">fn </span>demangle_windows() { |
| <a href=#438 id=438 data-nosnippet>438</a> <span class="macro">t!</span>(<span class="string">"ZN4testE"</span>, <span class="string">"test"</span>); |
| <a href=#439 id=439 data-nosnippet>439</a> <span class="macro">t!</span>(<span class="string">"ZN13test$u20$test4foobE"</span>, <span class="string">"test test::foob"</span>); |
| <a href=#440 id=440 data-nosnippet>440</a> <span class="macro">t!</span>(<span class="string">"ZN12test$RF$test4foobE"</span>, <span class="string">"test&test::foob"</span>); |
| <a href=#441 id=441 data-nosnippet>441</a> } |
| <a href=#442 id=442 data-nosnippet>442</a> |
| <a href=#443 id=443 data-nosnippet>443</a> <span class="attr">#[test] |
| <a href=#444 id=444 data-nosnippet>444</a> </span><span class="kw">fn </span>demangle_elements_beginning_with_underscore() { |
| <a href=#445 id=445 data-nosnippet>445</a> <span class="macro">t!</span>(<span class="string">"_ZN13_$LT$test$GT$E"</span>, <span class="string">"<test>"</span>); |
| <a href=#446 id=446 data-nosnippet>446</a> <span class="macro">t!</span>(<span class="string">"_ZN28_$u7b$$u7b$closure$u7d$$u7d$E"</span>, <span class="string">"{{closure}}"</span>); |
| <a href=#447 id=447 data-nosnippet>447</a> <span class="macro">t!</span>(<span class="string">"_ZN15__STATIC_FMTSTRE"</span>, <span class="string">"__STATIC_FMTSTR"</span>); |
| <a href=#448 id=448 data-nosnippet>448</a> } |
| <a href=#449 id=449 data-nosnippet>449</a> |
| <a href=#450 id=450 data-nosnippet>450</a> <span class="attr">#[test] |
| <a href=#451 id=451 data-nosnippet>451</a> </span><span class="kw">fn </span>demangle_trait_impls() { |
| <a href=#452 id=452 data-nosnippet>452</a> <span class="macro">t!</span>( |
| <a href=#453 id=453 data-nosnippet>453</a> <span class="string">"_ZN71_$LT$Test$u20$$u2b$$u20$$u27$static$u20$as$u20$foo..Bar$LT$Test$GT$$GT$3barE"</span>, |
| <a href=#454 id=454 data-nosnippet>454</a> <span class="string">"<Test + 'static as foo::Bar<Test>>::bar" |
| <a href=#455 id=455 data-nosnippet>455</a> </span>); |
| <a href=#456 id=456 data-nosnippet>456</a> } |
| <a href=#457 id=457 data-nosnippet>457</a> |
| <a href=#458 id=458 data-nosnippet>458</a> <span class="attr">#[test] |
| <a href=#459 id=459 data-nosnippet>459</a> </span><span class="kw">fn </span>demangle_without_hash() { |
| <a href=#460 id=460 data-nosnippet>460</a> <span class="kw">let </span>s = <span class="string">"_ZN3foo17h05af221e174051e9E"</span>; |
| <a href=#461 id=461 data-nosnippet>461</a> <span class="macro">t!</span>(s, <span class="string">"foo::h05af221e174051e9"</span>); |
| <a href=#462 id=462 data-nosnippet>462</a> <span class="macro">t_nohash!</span>(s, <span class="string">"foo"</span>); |
| <a href=#463 id=463 data-nosnippet>463</a> } |
| <a href=#464 id=464 data-nosnippet>464</a> |
| <a href=#465 id=465 data-nosnippet>465</a> <span class="attr">#[test] |
| <a href=#466 id=466 data-nosnippet>466</a> </span><span class="kw">fn </span>demangle_without_hash_edgecases() { |
| <a href=#467 id=467 data-nosnippet>467</a> <span class="comment">// One element, no hash. |
| <a href=#468 id=468 data-nosnippet>468</a> </span><span class="macro">t_nohash!</span>(<span class="string">"_ZN3fooE"</span>, <span class="string">"foo"</span>); |
| <a href=#469 id=469 data-nosnippet>469</a> <span class="comment">// Two elements, no hash. |
| <a href=#470 id=470 data-nosnippet>470</a> </span><span class="macro">t_nohash!</span>(<span class="string">"_ZN3foo3barE"</span>, <span class="string">"foo::bar"</span>); |
| <a href=#471 id=471 data-nosnippet>471</a> <span class="comment">// Longer-than-normal hash. |
| <a href=#472 id=472 data-nosnippet>472</a> </span><span class="macro">t_nohash!</span>(<span class="string">"_ZN3foo20h05af221e174051e9abcE"</span>, <span class="string">"foo"</span>); |
| <a href=#473 id=473 data-nosnippet>473</a> <span class="comment">// Shorter-than-normal hash. |
| <a href=#474 id=474 data-nosnippet>474</a> </span><span class="macro">t_nohash!</span>(<span class="string">"_ZN3foo5h05afE"</span>, <span class="string">"foo"</span>); |
| <a href=#475 id=475 data-nosnippet>475</a> <span class="comment">// Valid hash, but not at the end. |
| <a href=#476 id=476 data-nosnippet>476</a> </span><span class="macro">t_nohash!</span>(<span class="string">"_ZN17h05af221e174051e93fooE"</span>, <span class="string">"h05af221e174051e9::foo"</span>); |
| <a href=#477 id=477 data-nosnippet>477</a> <span class="comment">// Not a valid hash, missing the 'h'. |
| <a href=#478 id=478 data-nosnippet>478</a> </span><span class="macro">t_nohash!</span>(<span class="string">"_ZN3foo16ffaf221e174051e9E"</span>, <span class="string">"foo::ffaf221e174051e9"</span>); |
| <a href=#479 id=479 data-nosnippet>479</a> <span class="comment">// Not a valid hash, has a non-hex-digit. |
| <a href=#480 id=480 data-nosnippet>480</a> </span><span class="macro">t_nohash!</span>(<span class="string">"_ZN3foo17hg5af221e174051e9E"</span>, <span class="string">"foo::hg5af221e174051e9"</span>); |
| <a href=#481 id=481 data-nosnippet>481</a> } |
| <a href=#482 id=482 data-nosnippet>482</a> |
| <a href=#483 id=483 data-nosnippet>483</a> <span class="attr">#[test] |
| <a href=#484 id=484 data-nosnippet>484</a> </span><span class="kw">fn </span>demangle_thinlto() { |
| <a href=#485 id=485 data-nosnippet>485</a> <span class="comment">// One element, no hash. |
| <a href=#486 id=486 data-nosnippet>486</a> </span><span class="macro">t!</span>(<span class="string">"_ZN3fooE.llvm.9D1C9369"</span>, <span class="string">"foo"</span>); |
| <a href=#487 id=487 data-nosnippet>487</a> <span class="macro">t!</span>(<span class="string">"_ZN3fooE.llvm.9D1C9369@@16"</span>, <span class="string">"foo"</span>); |
| <a href=#488 id=488 data-nosnippet>488</a> <span class="macro">t_nohash!</span>( |
| <a href=#489 id=489 data-nosnippet>489</a> <span class="string">"_ZN9backtrace3foo17hbb467fcdaea5d79bE.llvm.A5310EB9"</span>, |
| <a href=#490 id=490 data-nosnippet>490</a> <span class="string">"backtrace::foo" |
| <a href=#491 id=491 data-nosnippet>491</a> </span>); |
| <a href=#492 id=492 data-nosnippet>492</a> } |
| <a href=#493 id=493 data-nosnippet>493</a> |
| <a href=#494 id=494 data-nosnippet>494</a> <span class="attr">#[test] |
| <a href=#495 id=495 data-nosnippet>495</a> </span><span class="kw">fn </span>demangle_llvm_ir_branch_labels() { |
| <a href=#496 id=496 data-nosnippet>496</a> <span class="macro">t!</span>(<span class="string">"_ZN4core5slice77_$LT$impl$u20$core..ops..index..IndexMut$LT$I$GT$$u20$for$u20$$u5b$T$u5d$$GT$9index_mut17haf9727c2edfbc47bE.exit.i.i"</span>, <span class="string">"core::slice::<impl core::ops::index::IndexMut<I> for [T]>::index_mut::haf9727c2edfbc47b.exit.i.i"</span>); |
| <a href=#497 id=497 data-nosnippet>497</a> <span class="macro">t_nohash!</span>(<span class="string">"_ZN4core5slice77_$LT$impl$u20$core..ops..index..IndexMut$LT$I$GT$$u20$for$u20$$u5b$T$u5d$$GT$9index_mut17haf9727c2edfbc47bE.exit.i.i"</span>, <span class="string">"core::slice::<impl core::ops::index::IndexMut<I> for [T]>::index_mut.exit.i.i"</span>); |
| <a href=#498 id=498 data-nosnippet>498</a> } |
| <a href=#499 id=499 data-nosnippet>499</a> |
| <a href=#500 id=500 data-nosnippet>500</a> <span class="attr">#[test] |
| <a href=#501 id=501 data-nosnippet>501</a> </span><span class="kw">fn </span>demangle_ignores_suffix_that_doesnt_look_like_a_symbol() { |
| <a href=#502 id=502 data-nosnippet>502</a> <span class="macro">t_err!</span>(<span class="string">"_ZN3fooE.llvm moocow"</span>); |
| <a href=#503 id=503 data-nosnippet>503</a> } |
| <a href=#504 id=504 data-nosnippet>504</a> |
| <a href=#505 id=505 data-nosnippet>505</a> <span class="attr">#[test] |
| <a href=#506 id=506 data-nosnippet>506</a> </span><span class="kw">fn </span>dont_panic() { |
| <a href=#507 id=507 data-nosnippet>507</a> <span class="kw">super</span>::demangle(<span class="string">"_ZN2222222222222222222222EE"</span>).to_string(); |
| <a href=#508 id=508 data-nosnippet>508</a> <span class="kw">super</span>::demangle(<span class="string">"_ZN5*70527e27.ll34csaŅE"</span>).to_string(); |
| <a href=#509 id=509 data-nosnippet>509</a> <span class="kw">super</span>::demangle(<span class="string">"_ZN5*70527a54.ll34_$b.1E"</span>).to_string(); |
| <a href=#510 id=510 data-nosnippet>510</a> <span class="kw">super</span>::demangle( |
| <a href=#511 id=511 data-nosnippet>511</a> <span class="string">"\ |
| <a href=#512 id=512 data-nosnippet>512</a> _ZN5~saƤb4e\n\ |
| <a href=#513 id=513 data-nosnippet>513</a> 2734cOsbE\n\ |
| <a href=#514 id=514 data-nosnippet>514</a> 5usage20h)3\0\0\0\0\0\0\07e2734cOsbE\ |
| <a href=#515 id=515 data-nosnippet>515</a> "</span>, |
| <a href=#516 id=516 data-nosnippet>516</a> ) |
| <a href=#517 id=517 data-nosnippet>517</a> .to_string(); |
| <a href=#518 id=518 data-nosnippet>518</a> } |
| <a href=#519 id=519 data-nosnippet>519</a> |
| <a href=#520 id=520 data-nosnippet>520</a> <span class="attr">#[test] |
| <a href=#521 id=521 data-nosnippet>521</a> </span><span class="kw">fn </span>invalid_no_chop() { |
| <a href=#522 id=522 data-nosnippet>522</a> <span class="macro">t_err!</span>(<span class="string">"_ZNfooE"</span>); |
| <a href=#523 id=523 data-nosnippet>523</a> } |
| <a href=#524 id=524 data-nosnippet>524</a> |
| <a href=#525 id=525 data-nosnippet>525</a> <span class="attr">#[test] |
| <a href=#526 id=526 data-nosnippet>526</a> </span><span class="kw">fn </span>handle_assoc_types() { |
| <a href=#527 id=527 data-nosnippet>527</a> <span class="macro">t!</span>(<span class="string">"_ZN151_$LT$alloc..boxed..Box$LT$alloc..boxed..FnBox$LT$A$C$$u20$Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$9call_once17h69e8f44b3723e1caE"</span>, <span class="string">"<alloc::boxed::Box<alloc::boxed::FnBox<A, Output=R> + 'a> as core::ops::function::FnOnce<A>>::call_once::h69e8f44b3723e1ca"</span>); |
| <a href=#528 id=528 data-nosnippet>528</a> } |
| <a href=#529 id=529 data-nosnippet>529</a> |
| <a href=#530 id=530 data-nosnippet>530</a> <span class="attr">#[test] |
| <a href=#531 id=531 data-nosnippet>531</a> </span><span class="kw">fn </span>handle_bang() { |
| <a href=#532 id=532 data-nosnippet>532</a> <span class="macro">t!</span>( |
| <a href=#533 id=533 data-nosnippet>533</a> <span class="string">"_ZN88_$LT$core..result..Result$LT$$u21$$C$$u20$E$GT$$u20$as$u20$std..process..Termination$GT$6report17hfc41d0da4a40b3e8E"</span>, |
| <a href=#534 id=534 data-nosnippet>534</a> <span class="string">"<core::result::Result<!, E> as std::process::Termination>::report::hfc41d0da4a40b3e8" |
| <a href=#535 id=535 data-nosnippet>535</a> </span>); |
| <a href=#536 id=536 data-nosnippet>536</a> } |
| <a href=#537 id=537 data-nosnippet>537</a> |
| <a href=#538 id=538 data-nosnippet>538</a> <span class="attr">#[test] |
| <a href=#539 id=539 data-nosnippet>539</a> </span><span class="kw">fn </span>limit_recursion() { |
| <a href=#540 id=540 data-nosnippet>540</a> <span class="macro">assert_contains!</span>( |
| <a href=#541 id=541 data-nosnippet>541</a> <span class="kw">super</span>::demangle(<span class="string">"_RNvB_1a"</span>).to_string(), |
| <a href=#542 id=542 data-nosnippet>542</a> <span class="string">"{recursion limit reached}" |
| <a href=#543 id=543 data-nosnippet>543</a> </span>); |
| <a href=#544 id=544 data-nosnippet>544</a> <span class="macro">assert_contains!</span>( |
| <a href=#545 id=545 data-nosnippet>545</a> <span class="kw">super</span>::demangle(<span class="string">"_RMC0RB2_"</span>).to_string(), |
| <a href=#546 id=546 data-nosnippet>546</a> <span class="string">"{recursion limit reached}" |
| <a href=#547 id=547 data-nosnippet>547</a> </span>); |
| <a href=#548 id=548 data-nosnippet>548</a> } |
| <a href=#549 id=549 data-nosnippet>549</a> |
| <a href=#550 id=550 data-nosnippet>550</a> <span class="attr">#[test] |
| <a href=#551 id=551 data-nosnippet>551</a> </span><span class="kw">fn </span>limit_output() { |
| <a href=#552 id=552 data-nosnippet>552</a> <span class="macro">assert_ends_with!</span>( |
| <a href=#553 id=553 data-nosnippet>553</a> <span class="kw">super</span>::demangle(<span class="string">"RYFG_FGyyEvRYFF_EvRYFFEvERLB_B_B_ERLRjB_B_B_"</span>).to_string(), |
| <a href=#554 id=554 data-nosnippet>554</a> <span class="string">"{size limit reached}" |
| <a href=#555 id=555 data-nosnippet>555</a> </span>); |
| <a href=#556 id=556 data-nosnippet>556</a> <span class="comment">// NOTE(eddyb) somewhat reduced version of the above, effectively |
| <a href=#557 id=557 data-nosnippet>557</a> // `<for<...> fn()>` with a larger number of lifetimes in `...`. |
| <a href=#558 id=558 data-nosnippet>558</a> </span><span class="macro">assert_ends_with!</span>( |
| <a href=#559 id=559 data-nosnippet>559</a> <span class="kw">super</span>::demangle(<span class="string">"_RMC0FGZZZ_Eu"</span>).to_string(), |
| <a href=#560 id=560 data-nosnippet>560</a> <span class="string">"{size limit reached}" |
| <a href=#561 id=561 data-nosnippet>561</a> </span>); |
| <a href=#562 id=562 data-nosnippet>562</a> } |
| <a href=#563 id=563 data-nosnippet>563</a> |
| <a href=#564 id=564 data-nosnippet>564</a> <span class="attr">#[cfg(feature = <span class="string">"std"</span>)] |
| <a href=#565 id=565 data-nosnippet>565</a> </span><span class="kw">fn </span>demangle_str(input: <span class="kw-2">&</span>str) -> String { |
| <a href=#566 id=566 data-nosnippet>566</a> <span class="kw">let </span><span class="kw-2">mut </span>output = Vec::new(); |
| <a href=#567 id=567 data-nosnippet>567</a> <span class="kw">super</span>::demangle_line(input, <span class="kw-2">&mut </span>output, <span class="bool-val">false</span>); |
| <a href=#568 id=568 data-nosnippet>568</a> String::from_utf8(output).unwrap() |
| <a href=#569 id=569 data-nosnippet>569</a> } |
| <a href=#570 id=570 data-nosnippet>570</a> |
| <a href=#571 id=571 data-nosnippet>571</a> <span class="attr">#[test] |
| <a href=#572 id=572 data-nosnippet>572</a> #[cfg(feature = <span class="string">"std"</span>)] |
| <a href=#573 id=573 data-nosnippet>573</a> </span><span class="kw">fn </span>find_multiple() { |
| <a href=#574 id=574 data-nosnippet>574</a> <span class="macro">assert_eq!</span>( |
| <a href=#575 id=575 data-nosnippet>575</a> demangle_str(<span class="string">"_ZN3fooE.llvm moocow _ZN3fooE.llvm"</span>), |
| <a href=#576 id=576 data-nosnippet>576</a> <span class="string">"foo.llvm moocow foo.llvm" |
| <a href=#577 id=577 data-nosnippet>577</a> </span>); |
| <a href=#578 id=578 data-nosnippet>578</a> } |
| <a href=#579 id=579 data-nosnippet>579</a> |
| <a href=#580 id=580 data-nosnippet>580</a> <span class="attr">#[test] |
| <a href=#581 id=581 data-nosnippet>581</a> #[cfg(feature = <span class="string">"std"</span>)] |
| <a href=#582 id=582 data-nosnippet>582</a> </span><span class="kw">fn </span>interleaved_new_legacy() { |
| <a href=#583 id=583 data-nosnippet>583</a> <span class="macro">assert_eq!</span>( |
| <a href=#584 id=584 data-nosnippet>584</a> demangle_str(<span class="string">"_ZN3fooE.llvm moocow _RNvMNtNtNtNtCs8a2262Dv4r_3mio3sys4unix8selector5epollNtB2_8Selector6select _ZN3fooE.llvm"</span>), |
| <a href=#585 id=585 data-nosnippet>585</a> <span class="string">"foo.llvm moocow <mio::sys::unix::selector::epoll::Selector>::select foo.llvm" |
| <a href=#586 id=586 data-nosnippet>586</a> </span>); |
| <a href=#587 id=587 data-nosnippet>587</a> } |
| <a href=#588 id=588 data-nosnippet>588</a>}</code></pre></div></section></main></body></html> |
