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<a href=#2 id=2 data-nosnippet>2</a>//!
<a href=#3 id=3 data-nosnippet>3</a>//! This module provides basic file operations, compression utilities,
<a href=#4 id=4 data-nosnippet>4</a>//! thread-safe counters, caching, and string interning for efficient I/O operations.
<a href=#5 id=5 data-nosnippet>5</a>//!
<a href=#6 id=6 data-nosnippet>6</a>//! ## Features
<a href=#7 id=7 data-nosnippet>7</a>//!
<a href=#8 id=8 data-nosnippet>8</a>//! - **Async File Operations**: Basic read/write operations using smol
<a href=#9 id=9 data-nosnippet>9</a>//! - **Compression**: Brotli compression/decompression integration
<a href=#10 id=10 data-nosnippet>10</a>//! - **Thread-Safe Utilities**: Atomic counters and LRU caching
<a href=#11 id=11 data-nosnippet>11</a>//! - **Memory Efficiency**: String interning for reduced memory usage
<a href=#12 id=12 data-nosnippet>12</a>//! - **Performance**: Optimized with ahash and `parking_lot`
<a href=#13 id=13 data-nosnippet>13</a>
<a href=#14 id=14 data-nosnippet>14</a></span><span class="comment">// Standard library imports
<a href=#15 id=15 data-nosnippet>15</a></span><span class="kw">use </span>std::sync::Arc;
<a href=#16 id=16 data-nosnippet>16</a>
<a href=#17 id=17 data-nosnippet>17</a><span class="comment">// External crate imports
<a href=#18 id=18 data-nosnippet>18</a></span><span class="kw">use </span>ahash::AHashMap;
<a href=#19 id=19 data-nosnippet>19</a><span class="kw">use </span>parking_lot::Mutex;
<a href=#20 id=20 data-nosnippet>20</a><span class="kw">use </span>smol::fs;
<a href=#21 id=21 data-nosnippet>21</a>
<a href=#22 id=22 data-nosnippet>22</a><span class="doccomment">/// Asynchronously reads the entire contents of a file into a string.
<a href=#23 id=23 data-nosnippet>23</a>///
<a href=#24 id=24 data-nosnippet>24</a>/// This function uses `smol::fs::read_to_string` for efficient async file reading.
<a href=#25 id=25 data-nosnippet>25</a>/// It's suitable for reading text files of reasonable size.
<a href=#26 id=26 data-nosnippet>26</a>///
<a href=#27 id=27 data-nosnippet>27</a>/// # Parameters
<a href=#28 id=28 data-nosnippet>28</a>/// - `path`: The path to the file to read, as a string slice.
<a href=#29 id=29 data-nosnippet>29</a>///
<a href=#30 id=30 data-nosnippet>30</a>/// # Returns
<a href=#31 id=31 data-nosnippet>31</a>/// - `Ok(String)` containing the file contents if successful.
<a href=#32 id=32 data-nosnippet>32</a>/// - `Err(std::io::Error)` if the file cannot be read (e.g., file not found, permission denied).
<a href=#33 id=33 data-nosnippet>33</a>///
<a href=#34 id=34 data-nosnippet>34</a>/// # Errors
<a href=#35 id=35 data-nosnippet>35</a>/// Returns an I/O error if the file cannot be opened or read.
<a href=#36 id=36 data-nosnippet>36</a>///
<a href=#37 id=37 data-nosnippet>37</a>/// # Examples
<a href=#38 id=38 data-nosnippet>38</a>/// ```rust,no_run
<a href=#39 id=39 data-nosnippet>39</a>/// use trash_utilities::io::read_file_async;
<a href=#40 id=40 data-nosnippet>40</a>///
<a href=#41 id=41 data-nosnippet>41</a>/// #[tokio::main]
<a href=#42 id=42 data-nosnippet>42</a>/// async fn main() -> std::io::Result<()> {
<a href=#43 id=43 data-nosnippet>43</a>/// let content = read_file_async("example.txt").await?;
<a href=#44 id=44 data-nosnippet>44</a>/// println!("{}", content);
<a href=#45 id=45 data-nosnippet>45</a>/// Ok(())
<a href=#46 id=46 data-nosnippet>46</a>/// }
<a href=#47 id=47 data-nosnippet>47</a>/// ```
<a href=#48 id=48 data-nosnippet>48</a></span><span class="kw">pub async fn </span>read_file_async(path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><String, std::io::Error> {
<a href=#49 id=49 data-nosnippet>49</a> fs::read_to_string(path).<span class="kw">await
<a href=#50 id=50 data-nosnippet>50</a></span>}
<a href=#51 id=51 data-nosnippet>51</a>
<a href=#52 id=52 data-nosnippet>52</a><span class="doccomment">/// Asynchronously writes a string to a file, creating the file if it doesn't exist.
<a href=#53 id=53 data-nosnippet>53</a>///
<a href=#54 id=54 data-nosnippet>54</a>/// # Parameters
<a href=#55 id=55 data-nosnippet>55</a>/// - `path`: The path to the file to write.
<a href=#56 id=56 data-nosnippet>56</a>/// - `content`: The content to write.
<a href=#57 id=57 data-nosnippet>57</a>///
<a href=#58 id=58 data-nosnippet>58</a>/// # Returns
<a href=#59 id=59 data-nosnippet>59</a>/// - `Ok(())` if successful.
<a href=#60 id=60 data-nosnippet>60</a>/// - `Err(std::io::Error)` if writing fails.
<a href=#61 id=61 data-nosnippet>61</a>///
<a href=#62 id=62 data-nosnippet>62</a>/// # Errors
<a href=#63 id=63 data-nosnippet>63</a>/// Returns an I/O error if the file cannot be created or written to.
<a href=#64 id=64 data-nosnippet>64</a>///
<a href=#65 id=65 data-nosnippet>65</a>/// # Examples
<a href=#66 id=66 data-nosnippet>66</a>/// ```rust,no_run
<a href=#67 id=67 data-nosnippet>67</a>/// use trash_utilities::io::write_file_async;
<a href=#68 id=68 data-nosnippet>68</a>///
<a href=#69 id=69 data-nosnippet>69</a>/// #[tokio::main]
<a href=#70 id=70 data-nosnippet>70</a>/// async fn main() -> std::io::Result<()> {
<a href=#71 id=71 data-nosnippet>71</a>/// write_file_async("output.txt", "Hello, world!").await?;
<a href=#72 id=72 data-nosnippet>72</a>/// Ok(())
<a href=#73 id=73 data-nosnippet>73</a>/// }
<a href=#74 id=74 data-nosnippet>74</a>/// ```
<a href=#75 id=75 data-nosnippet>75</a></span><span class="kw">pub async fn </span>write_file_async(path: <span class="kw-2">&</span>str, content: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><(), std::io::Error> {
<a href=#76 id=76 data-nosnippet>76</a> fs::write(path, content).<span class="kw">await
<a href=#77 id=77 data-nosnippet>77</a></span>}
<a href=#78 id=78 data-nosnippet>78</a>
<a href=#79 id=79 data-nosnippet>79</a><span class="doccomment">/// Asynchronously copies a file from source to destination.
<a href=#80 id=80 data-nosnippet>80</a>///
<a href=#81 id=81 data-nosnippet>81</a>/// # Parameters
<a href=#82 id=82 data-nosnippet>82</a>/// - `from`: The source file path.
<a href=#83 id=83 data-nosnippet>83</a>/// - `to`: The destination file path.
<a href=#84 id=84 data-nosnippet>84</a>///
<a href=#85 id=85 data-nosnippet>85</a>/// # Returns
<a href=#86 id=86 data-nosnippet>86</a>/// - `Ok(u64)` containing the number of bytes copied.
<a href=#87 id=87 data-nosnippet>87</a>/// - `Err(std::io::Error)` if copying fails.
<a href=#88 id=88 data-nosnippet>88</a>///
<a href=#89 id=89 data-nosnippet>89</a>/// # Errors
<a href=#90 id=90 data-nosnippet>90</a>/// Returns an I/O error if the source file cannot be read or the destination cannot be written to.
<a href=#91 id=91 data-nosnippet>91</a>///
<a href=#92 id=92 data-nosnippet>92</a>/// # Examples
<a href=#93 id=93 data-nosnippet>93</a>/// ```rust,no_run
<a href=#94 id=94 data-nosnippet>94</a>/// use trash_utilities::io::copy_file_async;
<a href=#95 id=95 data-nosnippet>95</a>///
<a href=#96 id=96 data-nosnippet>96</a>/// #[tokio::main]
<a href=#97 id=97 data-nosnippet>97</a>/// async fn main() -> std::io::Result<()> {
<a href=#98 id=98 data-nosnippet>98</a>/// let bytes = copy_file_async("source.txt", "dest.txt").await?;
<a href=#99 id=99 data-nosnippet>99</a>/// println!("Copied {} bytes", bytes);
<a href=#100 id=100 data-nosnippet>100</a>/// Ok(())
<a href=#101 id=101 data-nosnippet>101</a>/// }
<a href=#102 id=102 data-nosnippet>102</a>/// ```
<a href=#103 id=103 data-nosnippet>103</a></span><span class="kw">pub fn </span>copy_file_async(from: <span class="kw-2">&</span>str, to: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><u64, std::io::Error> {
<a href=#104 id=104 data-nosnippet>104</a> std::fs::copy(from, to)
<a href=#105 id=105 data-nosnippet>105</a>}
<a href=#106 id=106 data-nosnippet>106</a>
<a href=#107 id=107 data-nosnippet>107</a><span class="doccomment">/// Asynchronously reads a file as bytes.
<a href=#108 id=108 data-nosnippet>108</a>///
<a href=#109 id=109 data-nosnippet>109</a>/// # Parameters
<a href=#110 id=110 data-nosnippet>110</a>/// - `path`: The path to the file to read.
<a href=#111 id=111 data-nosnippet>111</a>///
<a href=#112 id=112 data-nosnippet>112</a>/// # Returns
<a href=#113 id=113 data-nosnippet>113</a>/// - `Ok(Vec<u8>)` containing the file contents as bytes.
<a href=#114 id=114 data-nosnippet>114</a>/// - `Err(std::io::Error)` if reading fails.
<a href=#115 id=115 data-nosnippet>115</a>///
<a href=#116 id=116 data-nosnippet>116</a>/// # Errors
<a href=#117 id=117 data-nosnippet>117</a>/// Returns an I/O error if the file cannot be opened or read.
<a href=#118 id=118 data-nosnippet>118</a>///
<a href=#119 id=119 data-nosnippet>119</a>/// # Examples
<a href=#120 id=120 data-nosnippet>120</a>/// ```rust,no_run
<a href=#121 id=121 data-nosnippet>121</a>/// use trash_utilities::io::read_file_bytes_async;
<a href=#122 id=122 data-nosnippet>122</a>///
<a href=#123 id=123 data-nosnippet>123</a>/// #[tokio::main]
<a href=#124 id=124 data-nosnippet>124</a>/// async fn main() -> std::io::Result<()> {
<a href=#125 id=125 data-nosnippet>125</a>/// let bytes = read_file_bytes_async("file.bin").await?;
<a href=#126 id=126 data-nosnippet>126</a>/// println!("Read {} bytes", bytes.len());
<a href=#127 id=127 data-nosnippet>127</a>/// Ok(())
<a href=#128 id=128 data-nosnippet>128</a>/// }
<a href=#129 id=129 data-nosnippet>129</a>/// ```
<a href=#130 id=130 data-nosnippet>130</a></span><span class="kw">pub async fn </span>read_file_bytes_async(path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Vec<u8>, std::io::Error> {
<a href=#131 id=131 data-nosnippet>131</a> fs::read(path).<span class="kw">await
<a href=#132 id=132 data-nosnippet>132</a></span>}
<a href=#133 id=133 data-nosnippet>133</a>
<a href=#134 id=134 data-nosnippet>134</a><span class="doccomment">/// Asynchronously writes bytes to a file.
<a href=#135 id=135 data-nosnippet>135</a>///
<a href=#136 id=136 data-nosnippet>136</a>/// # Parameters
<a href=#137 id=137 data-nosnippet>137</a>/// - `path`: The path to the file to write.
<a href=#138 id=138 data-nosnippet>138</a>/// - `data`: The bytes to write.
<a href=#139 id=139 data-nosnippet>139</a>///
<a href=#140 id=140 data-nosnippet>140</a>/// # Returns
<a href=#141 id=141 data-nosnippet>141</a>/// - `Ok(())` if successful.
<a href=#142 id=142 data-nosnippet>142</a>/// - `Err(std::io::Error)` if writing fails.
<a href=#143 id=143 data-nosnippet>143</a>///
<a href=#144 id=144 data-nosnippet>144</a>/// # Errors
<a href=#145 id=145 data-nosnippet>145</a>/// Returns an I/O error if the file cannot be created or written to.
<a href=#146 id=146 data-nosnippet>146</a>///
<a href=#147 id=147 data-nosnippet>147</a>/// # Examples
<a href=#148 id=148 data-nosnippet>148</a>/// ```rust,no_run
<a href=#149 id=149 data-nosnippet>149</a>/// use trash_utilities::io::write_file_bytes_async;
<a href=#150 id=150 data-nosnippet>150</a>///
<a href=#151 id=151 data-nosnippet>151</a>/// #[tokio::main]
<a href=#152 id=152 data-nosnippet>152</a>/// async fn main() -> std::io::Result<()> {
<a href=#153 id=153 data-nosnippet>153</a>/// write_file_bytes_async("output.bin", &[1, 2, 3]).await?;
<a href=#154 id=154 data-nosnippet>154</a>/// Ok(())
<a href=#155 id=155 data-nosnippet>155</a>/// }
<a href=#156 id=156 data-nosnippet>156</a>/// ```
<a href=#157 id=157 data-nosnippet>157</a></span><span class="kw">pub async fn </span>write_file_bytes_async(path: <span class="kw-2">&</span>str, data: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><(), std::io::Error> {
<a href=#158 id=158 data-nosnippet>158</a> fs::write(path, data).<span class="kw">await
<a href=#159 id=159 data-nosnippet>159</a></span>}
<a href=#160 id=160 data-nosnippet>160</a>
<a href=#161 id=161 data-nosnippet>161</a><span class="doccomment">/// Asynchronously creates a directory and all its parent directories.
<a href=#162 id=162 data-nosnippet>162</a>///
<a href=#163 id=163 data-nosnippet>163</a>/// # Parameters
<a href=#164 id=164 data-nosnippet>164</a>/// - `path`: The directory path to create.
<a href=#165 id=165 data-nosnippet>165</a>///
<a href=#166 id=166 data-nosnippet>166</a>/// # Returns
<a href=#167 id=167 data-nosnippet>167</a>/// - `Ok(())` if successful.
<a href=#168 id=168 data-nosnippet>168</a>/// - `Err(std::io::Error)` if creation fails.
<a href=#169 id=169 data-nosnippet>169</a>///
<a href=#170 id=170 data-nosnippet>170</a>/// # Errors
<a href=#171 id=171 data-nosnippet>171</a>/// Returns an I/O error if the directory cannot be created.
<a href=#172 id=172 data-nosnippet>172</a>///
<a href=#173 id=173 data-nosnippet>173</a>/// # Examples
<a href=#174 id=174 data-nosnippet>174</a>/// ```rust,no_run
<a href=#175 id=175 data-nosnippet>175</a>/// use trash_utilities::io::create_dir_async;
<a href=#176 id=176 data-nosnippet>176</a>///
<a href=#177 id=177 data-nosnippet>177</a>/// #[tokio::main]
<a href=#178 id=178 data-nosnippet>178</a>/// async fn main() -> std::io::Result<()> {
<a href=#179 id=179 data-nosnippet>179</a>/// create_dir_async("path/to/dir").await?;
<a href=#180 id=180 data-nosnippet>180</a>/// Ok(())
<a href=#181 id=181 data-nosnippet>181</a>/// }
<a href=#182 id=182 data-nosnippet>182</a>/// ```
<a href=#183 id=183 data-nosnippet>183</a></span><span class="kw">pub async fn </span>create_dir_async(path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><(), std::io::Error> {
<a href=#184 id=184 data-nosnippet>184</a> fs::create_dir_all(path).<span class="kw">await
<a href=#185 id=185 data-nosnippet>185</a></span>}
<a href=#186 id=186 data-nosnippet>186</a>
<a href=#187 id=187 data-nosnippet>187</a><span class="doccomment">/// Asynchronously reads the contents of a directory.
<a href=#188 id=188 data-nosnippet>188</a>///
<a href=#189 id=189 data-nosnippet>189</a>/// # Parameters
<a href=#190 id=190 data-nosnippet>190</a>/// - `path`: The directory path to read.
<a href=#191 id=191 data-nosnippet>191</a>///
<a href=#192 id=192 data-nosnippet>192</a>/// # Returns
<a href=#193 id=193 data-nosnippet>193</a>/// - `Ok(Vec<String>)` containing the names of entries in the directory.
<a href=#194 id=194 data-nosnippet>194</a>/// - `Err(std::io::Error)` if reading fails.
<a href=#195 id=195 data-nosnippet>195</a>///
<a href=#196 id=196 data-nosnippet>196</a>/// # Errors
<a href=#197 id=197 data-nosnippet>197</a>/// Returns an I/O error if the directory cannot be opened or read.
<a href=#198 id=198 data-nosnippet>198</a>///
<a href=#199 id=199 data-nosnippet>199</a>/// # Examples
<a href=#200 id=200 data-nosnippet>200</a>/// ```rust,no_run
<a href=#201 id=201 data-nosnippet>201</a>/// use trash_utilities::io::read_dir_async;
<a href=#202 id=202 data-nosnippet>202</a>///
<a href=#203 id=203 data-nosnippet>203</a>/// #[tokio::main]
<a href=#204 id=204 data-nosnippet>204</a>/// async fn main() -> std::io::Result<()> {
<a href=#205 id=205 data-nosnippet>205</a>/// let entries = read_dir_async(".").await?;
<a href=#206 id=206 data-nosnippet>206</a>/// for entry in entries {
<a href=#207 id=207 data-nosnippet>207</a>/// println!("{}", entry);
<a href=#208 id=208 data-nosnippet>208</a>/// }
<a href=#209 id=209 data-nosnippet>209</a>/// Ok(())
<a href=#210 id=210 data-nosnippet>210</a>/// }
<a href=#211 id=211 data-nosnippet>211</a>/// ```
<a href=#212 id=212 data-nosnippet>212</a></span><span class="kw">pub async fn </span>read_dir_async(path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Vec<String>, std::io::Error> {
<a href=#213 id=213 data-nosnippet>213</a> <span class="kw">use </span>futures_lite::StreamExt;
<a href=#214 id=214 data-nosnippet>214</a>
<a href=#215 id=215 data-nosnippet>215</a> <span class="kw">let </span><span class="kw-2">mut </span>entries = Vec::new();
<a href=#216 id=216 data-nosnippet>216</a> <span class="kw">let </span><span class="kw-2">mut </span>dir = fs::read_dir(path).<span class="kw">await</span><span class="question-mark">?</span>;
<a href=#217 id=217 data-nosnippet>217</a> <span class="kw">while let </span><span class="prelude-val">Some</span>(entry) = dir.next().<span class="kw">await </span>{
<a href=#218 id=218 data-nosnippet>218</a> <span class="kw">let </span>entry = entry<span class="question-mark">?</span>;
<a href=#219 id=219 data-nosnippet>219</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(name) = entry.file_name().to_str() {
<a href=#220 id=220 data-nosnippet>220</a> entries.push(name.to_string());
<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="prelude-val">Ok</span>(entries)
<a href=#224 id=224 data-nosnippet>224</a>}
<a href=#225 id=225 data-nosnippet>225</a>
<a href=#226 id=226 data-nosnippet>226</a><span class="doccomment">/// Compress data using Brotli
<a href=#227 id=227 data-nosnippet>227</a>///
<a href=#228 id=228 data-nosnippet>228</a>/// Leverages the common module's compression utilities for consistency.
<a href=#229 id=229 data-nosnippet>229</a>///
<a href=#230 id=230 data-nosnippet>230</a>/// # Parameters
<a href=#231 id=231 data-nosnippet>231</a>/// - `data`: The data to compress.
<a href=#232 id=232 data-nosnippet>232</a>/// - `level`: Compression level (1-11, where 11 is maximum compression).
<a href=#233 id=233 data-nosnippet>233</a>///
<a href=#234 id=234 data-nosnippet>234</a>/// # Returns
<a href=#235 id=235 data-nosnippet>235</a>/// - `Ok(Vec<u8>)` containing compressed data.
<a href=#236 id=236 data-nosnippet>236</a>/// - `Err(std::io::Error)` if compression fails.
<a href=#237 id=237 data-nosnippet>237</a>///
<a href=#238 id=238 data-nosnippet>238</a>/// # Errors
<a href=#239 id=239 data-nosnippet>239</a>/// Returns an I/O error if compression fails.
<a href=#240 id=240 data-nosnippet>240</a></span><span class="kw">pub fn </span>compress_brotli(data: <span class="kw-2">&</span>[u8], level: u32) -> <span class="prelude-ty">Result</span><Vec<u8>, std::io::Error> {
<a href=#241 id=241 data-nosnippet>241</a> <span class="kw">crate</span>::common::crypto::compress_brotli(data, level)
<a href=#242 id=242 data-nosnippet>242</a>}
<a href=#243 id=243 data-nosnippet>243</a>
<a href=#244 id=244 data-nosnippet>244</a><span class="doccomment">/// Decompress Brotli data
<a href=#245 id=245 data-nosnippet>245</a>///
<a href=#246 id=246 data-nosnippet>246</a>/// Leverages the common module's decompression utilities.
<a href=#247 id=247 data-nosnippet>247</a>///
<a href=#248 id=248 data-nosnippet>248</a>/// # Parameters
<a href=#249 id=249 data-nosnippet>249</a>/// - `data`: The compressed data to decompress.
<a href=#250 id=250 data-nosnippet>250</a>///
<a href=#251 id=251 data-nosnippet>251</a>/// # Returns
<a href=#252 id=252 data-nosnippet>252</a>/// - `Ok(Vec<u8>)` containing decompressed data.
<a href=#253 id=253 data-nosnippet>253</a>/// - `Err(std::io::Error)` if decompression fails.
<a href=#254 id=254 data-nosnippet>254</a>///
<a href=#255 id=255 data-nosnippet>255</a>/// # Errors
<a href=#256 id=256 data-nosnippet>256</a>/// Returns an I/O error if decompression fails.
<a href=#257 id=257 data-nosnippet>257</a></span><span class="kw">pub fn </span>decompress_brotli(data: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><Vec<u8>, std::io::Error> {
<a href=#258 id=258 data-nosnippet>258</a> <span class="kw">crate</span>::common::crypto::decompress_brotli(data)
<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="doccomment">/// Thread-safe counter with atomic operations
<a href=#262 id=262 data-nosnippet>262</a>///
<a href=#263 id=263 data-nosnippet>263</a>/// Uses `parking_lot` for efficient locking and arc-swap for potential future optimizations.
<a href=#264 id=264 data-nosnippet>264</a></span><span class="attr">#[derive(Debug, Clone)]
<a href=#265 id=265 data-nosnippet>265</a></span><span class="kw">pub struct </span>AtomicCounter {
<a href=#266 id=266 data-nosnippet>266</a> count: Arc<Mutex<u64>>,
<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="kw">impl </span>AtomicCounter {
<a href=#270 id=270 data-nosnippet>270</a> <span class="doccomment">/// Create a new counter initialized to zero
<a href=#271 id=271 data-nosnippet>271</a> </span><span class="attr">#[must_use]
<a href=#272 id=272 data-nosnippet>272</a> </span><span class="kw">pub fn </span>new() -> <span class="self">Self </span>{
<a href=#273 id=273 data-nosnippet>273</a> <span class="self">Self </span>{
<a href=#274 id=274 data-nosnippet>274</a> count: Arc::new(Mutex::new(<span class="number">0</span>)),
<a href=#275 id=275 data-nosnippet>275</a> }
<a href=#276 id=276 data-nosnippet>276</a> }
<a href=#277 id=277 data-nosnippet>277</a>
<a href=#278 id=278 data-nosnippet>278</a> <span class="doccomment">/// Increment the counter and return the new value
<a href=#279 id=279 data-nosnippet>279</a> ///
<a href=#280 id=280 data-nosnippet>280</a> /// This operation is thread-safe and uses efficient locking.
<a href=#281 id=281 data-nosnippet>281</a> </span><span class="attr">#[must_use]
<a href=#282 id=282 data-nosnippet>282</a> </span><span class="kw">pub fn </span>increment(<span class="kw-2">&</span><span class="self">self</span>) -> u64 {
<a href=#283 id=283 data-nosnippet>283</a> <span class="kw">let </span><span class="kw-2">mut </span>count = <span class="self">self</span>.count.lock();
<a href=#284 id=284 data-nosnippet>284</a> <span class="kw-2">*</span>count += <span class="number">1</span>;
<a href=#285 id=285 data-nosnippet>285</a> <span class="kw-2">*</span>count
<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> <span class="doccomment">/// Get the current value of the counter
<a href=#289 id=289 data-nosnippet>289</a> ///
<a href=#290 id=290 data-nosnippet>290</a> /// This operation is thread-safe.
<a href=#291 id=291 data-nosnippet>291</a> </span><span class="attr">#[must_use]
<a href=#292 id=292 data-nosnippet>292</a> </span><span class="kw">pub fn </span>get(<span class="kw-2">&</span><span class="self">self</span>) -> u64 {
<a href=#293 id=293 data-nosnippet>293</a> <span class="kw-2">*</span><span class="self">self</span>.count.lock()
<a href=#294 id=294 data-nosnippet>294</a> }
<a href=#295 id=295 data-nosnippet>295</a>
<a href=#296 id=296 data-nosnippet>296</a> <span class="doccomment">/// Reset the counter to zero
<a href=#297 id=297 data-nosnippet>297</a> ///
<a href=#298 id=298 data-nosnippet>298</a> /// This operation is thread-safe.
<a href=#299 id=299 data-nosnippet>299</a> </span><span class="kw">pub fn </span>reset(<span class="kw-2">&</span><span class="self">self</span>) {
<a href=#300 id=300 data-nosnippet>300</a> <span class="kw-2">*</span><span class="self">self</span>.count.lock() = <span class="number">0</span>;
<a href=#301 id=301 data-nosnippet>301</a> }
<a href=#302 id=302 data-nosnippet>302</a>}
<a href=#303 id=303 data-nosnippet>303</a>
<a href=#304 id=304 data-nosnippet>304</a><span class="kw">impl </span>Default <span class="kw">for </span>AtomicCounter {
<a href=#305 id=305 data-nosnippet>305</a> <span class="kw">fn </span>default() -> <span class="self">Self </span>{
<a href=#306 id=306 data-nosnippet>306</a> <span class="self">Self</span>::new()
<a href=#307 id=307 data-nosnippet>307</a> }
<a href=#308 id=308 data-nosnippet>308</a>}
<a href=#309 id=309 data-nosnippet>309</a>
<a href=#310 id=310 data-nosnippet>310</a><span class="doccomment">/// Thread-safe LRU cache with configurable capacity
<a href=#311 id=311 data-nosnippet>311</a>///
<a href=#312 id=312 data-nosnippet>312</a>/// Uses ahash for fast hashing and `parking_lot` for efficient concurrent access.
<a href=#313 id=313 data-nosnippet>313</a>/// Implements LRU eviction policy for memory efficiency.
<a href=#314 id=314 data-nosnippet>314</a></span><span class="kw">pub struct </span>LruCache<K, V> {
<a href=#315 id=315 data-nosnippet>315</a> map: Mutex<AHashMap<K, V>>,
<a href=#316 id=316 data-nosnippet>316</a> order: Mutex<Vec<K>>,
<a href=#317 id=317 data-nosnippet>317</a> capacity: usize,
<a href=#318 id=318 data-nosnippet>318</a>}
<a href=#319 id=319 data-nosnippet>319</a>
<a href=#320 id=320 data-nosnippet>320</a><span class="kw">impl</span><K, V> LruCache<K, V>
<a href=#321 id=321 data-nosnippet>321</a><span class="kw">where
<a href=#322 id=322 data-nosnippet>322</a> </span>K: Clone + Eq + std::hash::Hash,
<a href=#323 id=323 data-nosnippet>323</a>{
<a href=#324 id=324 data-nosnippet>324</a> <span class="doccomment">/// Create a new LRU cache with the specified capacity
<a href=#325 id=325 data-nosnippet>325</a> ///
<a href=#326 id=326 data-nosnippet>326</a> /// # Parameters
<a href=#327 id=327 data-nosnippet>327</a> /// - `capacity`: Maximum number of items to store in the cache.
<a href=#328 id=328 data-nosnippet>328</a> </span><span class="attr">#[must_use]
<a href=#329 id=329 data-nosnippet>329</a> </span><span class="kw">pub fn </span>new(capacity: usize) -> <span class="self">Self </span>{
<a href=#330 id=330 data-nosnippet>330</a> <span class="self">Self </span>{
<a href=#331 id=331 data-nosnippet>331</a> map: Mutex::new(AHashMap::new()),
<a href=#332 id=332 data-nosnippet>332</a> order: Mutex::new(Vec::new()),
<a href=#333 id=333 data-nosnippet>333</a> capacity,
<a href=#334 id=334 data-nosnippet>334</a> }
<a href=#335 id=335 data-nosnippet>335</a> }
<a href=#336 id=336 data-nosnippet>336</a>
<a href=#337 id=337 data-nosnippet>337</a> <span class="doccomment">/// Get a value from the cache
<a href=#338 id=338 data-nosnippet>338</a> ///
<a href=#339 id=339 data-nosnippet>339</a> /// If the key exists, it moves to the front (most recently used).
<a href=#340 id=340 data-nosnippet>340</a> /// Returns `None` if the key is not in the cache.
<a href=#341 id=341 data-nosnippet>341</a> </span><span class="kw">pub fn </span>get(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&</span>K) -> <span class="prelude-ty">Option</span><V>
<a href=#342 id=342 data-nosnippet>342</a> <span class="kw">where
<a href=#343 id=343 data-nosnippet>343</a> </span>V: Clone,
<a href=#344 id=344 data-nosnippet>344</a> {
<a href=#345 id=345 data-nosnippet>345</a> <span class="kw">let </span>map = <span class="self">self</span>.map.lock();
<a href=#346 id=346 data-nosnippet>346</a> <span class="kw">let </span><span class="kw-2">mut </span>order = <span class="self">self</span>.order.lock();
<a href=#347 id=347 data-nosnippet>347</a>
<a href=#348 id=348 data-nosnippet>348</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(value) = map.get(key) {
<a href=#349 id=349 data-nosnippet>349</a> <span class="comment">// Move to front (most recently used)
<a href=#350 id=350 data-nosnippet>350</a> </span><span class="kw">if let </span><span class="prelude-val">Some</span>(pos) = order.iter().position(|k| k == key) {
<a href=#351 id=351 data-nosnippet>351</a> order.remove(pos);
<a href=#352 id=352 data-nosnippet>352</a> order.push(key.clone());
<a href=#353 id=353 data-nosnippet>353</a> }
<a href=#354 id=354 data-nosnippet>354</a> <span class="prelude-val">Some</span>(value.clone())
<a href=#355 id=355 data-nosnippet>355</a> } <span class="kw">else </span>{
<a href=#356 id=356 data-nosnippet>356</a> <span class="prelude-val">None
<a href=#357 id=357 data-nosnippet>357</a> </span>}
<a href=#358 id=358 data-nosnippet>358</a> }
<a href=#359 id=359 data-nosnippet>359</a>
<a href=#360 id=360 data-nosnippet>360</a> <span class="doccomment">/// Insert a value into the cache
<a href=#361 id=361 data-nosnippet>361</a> ///
<a href=#362 id=362 data-nosnippet>362</a> /// If the cache is at capacity, the least recently used item is evicted.
<a href=#363 id=363 data-nosnippet>363</a> /// If the key already exists, it updates the value and moves it to the front.
<a href=#364 id=364 data-nosnippet>364</a> </span><span class="kw">pub fn </span>insert(<span class="kw-2">&</span><span class="self">self</span>, key: K, value: V) {
<a href=#365 id=365 data-nosnippet>365</a> <span class="kw">let </span><span class="kw-2">mut </span>map = <span class="self">self</span>.map.lock();
<a href=#366 id=366 data-nosnippet>366</a> <span class="kw">let </span><span class="kw-2">mut </span>order = <span class="self">self</span>.order.lock();
<a href=#367 id=367 data-nosnippet>367</a>
<a href=#368 id=368 data-nosnippet>368</a> <span class="kw">if </span>map.contains_key(<span class="kw-2">&</span>key) {
<a href=#369 id=369 data-nosnippet>369</a> <span class="comment">// Update existing - move to front
<a href=#370 id=370 data-nosnippet>370</a> </span><span class="kw">if let </span><span class="prelude-val">Some</span>(pos) = order.iter().position(|k| k == <span class="kw-2">&</span>key) {
<a href=#371 id=371 data-nosnippet>371</a> order.remove(pos);
<a href=#372 id=372 data-nosnippet>372</a> }
<a href=#373 id=373 data-nosnippet>373</a> } <span class="kw">else if </span>map.len() >= <span class="self">self</span>.capacity {
<a href=#374 id=374 data-nosnippet>374</a> <span class="comment">// Remove least recently used (oldest)
<a href=#375 id=375 data-nosnippet>375</a> </span><span class="kw">if let </span><span class="prelude-val">Some</span>(oldest) = order.first().cloned() {
<a href=#376 id=376 data-nosnippet>376</a> map.remove(<span class="kw-2">&</span>oldest);
<a href=#377 id=377 data-nosnippet>377</a> order.remove(<span class="number">0</span>);
<a href=#378 id=378 data-nosnippet>378</a> }
<a href=#379 id=379 data-nosnippet>379</a> }
<a href=#380 id=380 data-nosnippet>380</a>
<a href=#381 id=381 data-nosnippet>381</a> map.insert(key.clone(), value);
<a href=#382 id=382 data-nosnippet>382</a> order.push(key);
<a href=#383 id=383 data-nosnippet>383</a> }
<a href=#384 id=384 data-nosnippet>384</a>
<a href=#385 id=385 data-nosnippet>385</a> <span class="doccomment">/// Get the current number of items in the cache
<a href=#386 id=386 data-nosnippet>386</a> </span><span class="attr">#[must_use]
<a href=#387 id=387 data-nosnippet>387</a> </span><span class="kw">pub fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
<a href=#388 id=388 data-nosnippet>388</a> <span class="self">self</span>.map.lock().len()
<a href=#389 id=389 data-nosnippet>389</a> }
<a href=#390 id=390 data-nosnippet>390</a>
<a href=#391 id=391 data-nosnippet>391</a> <span class="doccomment">/// Check if the cache is empty
<a href=#392 id=392 data-nosnippet>392</a> </span><span class="attr">#[must_use]
<a href=#393 id=393 data-nosnippet>393</a> </span><span class="kw">pub fn </span>is_empty(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
<a href=#394 id=394 data-nosnippet>394</a> <span class="self">self</span>.map.lock().is_empty()
<a href=#395 id=395 data-nosnippet>395</a> }
<a href=#396 id=396 data-nosnippet>396</a>
<a href=#397 id=397 data-nosnippet>397</a> <span class="doccomment">/// Clear all items from the cache
<a href=#398 id=398 data-nosnippet>398</a> </span><span class="kw">pub fn </span>clear(<span class="kw-2">&</span><span class="self">self</span>) {
<a href=#399 id=399 data-nosnippet>399</a> <span class="kw">let </span><span class="kw-2">mut </span>map = <span class="self">self</span>.map.lock();
<a href=#400 id=400 data-nosnippet>400</a> <span class="kw">let </span><span class="kw-2">mut </span>order = <span class="self">self</span>.order.lock();
<a href=#401 id=401 data-nosnippet>401</a> map.clear();
<a href=#402 id=402 data-nosnippet>402</a> order.clear();
<a href=#403 id=403 data-nosnippet>403</a> }
<a href=#404 id=404 data-nosnippet>404</a>}
<a href=#405 id=405 data-nosnippet>405</a>
<a href=#406 id=406 data-nosnippet>406</a><span class="doccomment">/// Efficient string interning for memory optimization
<a href=#407 id=407 data-nosnippet>407</a>///
<a href=#408 id=408 data-nosnippet>408</a>/// Uses ahash for fast hashing and `parking_lot` for thread-safe access.
<a href=#409 id=409 data-nosnippet>409</a>/// Stores strings as Arc<str> to enable efficient sharing and reference counting.
<a href=#410 id=410 data-nosnippet>410</a></span><span class="kw">pub struct </span>StringInterner {
<a href=#411 id=411 data-nosnippet>411</a> strings: Mutex<AHashMap<u64, Arc<str>>>,
<a href=#412 id=412 data-nosnippet>412</a>}
<a href=#413 id=413 data-nosnippet>413</a>
<a href=#414 id=414 data-nosnippet>414</a><span class="kw">impl </span>StringInterner {
<a href=#415 id=415 data-nosnippet>415</a> <span class="doccomment">/// Create a new string interner
<a href=#416 id=416 data-nosnippet>416</a> </span><span class="attr">#[must_use]
<a href=#417 id=417 data-nosnippet>417</a> </span><span class="kw">pub fn </span>new() -> <span class="self">Self </span>{
<a href=#418 id=418 data-nosnippet>418</a> <span class="self">Self </span>{
<a href=#419 id=419 data-nosnippet>419</a> strings: Mutex::new(AHashMap::new()),
<a href=#420 id=420 data-nosnippet>420</a> }
<a href=#421 id=421 data-nosnippet>421</a> }
<a href=#422 id=422 data-nosnippet>422</a>
<a href=#423 id=423 data-nosnippet>423</a> <span class="doccomment">/// Intern a string, returning a shared reference
<a href=#424 id=424 data-nosnippet>424</a> ///
<a href=#425 id=425 data-nosnippet>425</a> /// If the string has already been interned, returns the existing Arc<str>.
<a href=#426 id=426 data-nosnippet>426</a> /// Otherwise, creates a new interned string and returns it.
<a href=#427 id=427 data-nosnippet>427</a> ///
<a href=#428 id=428 data-nosnippet>428</a> /// # Parameters
<a href=#429 id=429 data-nosnippet>429</a> /// - `s`: The string to intern.
<a href=#430 id=430 data-nosnippet>430</a> ///
<a href=#431 id=431 data-nosnippet>431</a> /// # Returns
<a href=#432 id=432 data-nosnippet>432</a> /// An `Arc<str>` containing the interned string.
<a href=#433 id=433 data-nosnippet>433</a> </span><span class="kw">pub fn </span>intern(<span class="kw-2">&</span><span class="self">self</span>, s: <span class="kw-2">&</span>str) -> Arc<str> {
<a href=#434 id=434 data-nosnippet>434</a> <span class="kw">use </span>std::hash::Hasher;
<a href=#435 id=435 data-nosnippet>435</a>
<a href=#436 id=436 data-nosnippet>436</a> <span class="kw">let </span><span class="kw-2">mut </span>hasher = ahash::AHasher::default();
<a href=#437 id=437 data-nosnippet>437</a> hasher.write(s.as_bytes());
<a href=#438 id=438 data-nosnippet>438</a> <span class="kw">let </span>key = hasher.finish();
<a href=#439 id=439 data-nosnippet>439</a>
<a href=#440 id=440 data-nosnippet>440</a> <span class="kw">let </span><span class="kw-2">mut </span>strings = <span class="self">self</span>.strings.lock();
<a href=#441 id=441 data-nosnippet>441</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(interned) = strings.get(<span class="kw-2">&</span>key) {
<a href=#442 id=442 data-nosnippet>442</a> Arc::clone(interned)
<a href=#443 id=443 data-nosnippet>443</a> } <span class="kw">else </span>{
<a href=#444 id=444 data-nosnippet>444</a> <span class="kw">let </span>interned: Arc<str> = Arc::from(s);
<a href=#445 id=445 data-nosnippet>445</a> strings.insert(key, Arc::clone(<span class="kw-2">&</span>interned));
<a href=#446 id=446 data-nosnippet>446</a> interned
<a href=#447 id=447 data-nosnippet>447</a> }
<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="doccomment">/// Get the number of unique interned strings
<a href=#451 id=451 data-nosnippet>451</a> </span><span class="attr">#[must_use]
<a href=#452 id=452 data-nosnippet>452</a> </span><span class="kw">pub fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
<a href=#453 id=453 data-nosnippet>453</a> <span class="self">self</span>.strings.lock().len()
<a href=#454 id=454 data-nosnippet>454</a> }
<a href=#455 id=455 data-nosnippet>455</a>
<a href=#456 id=456 data-nosnippet>456</a> <span class="doccomment">/// Check if any strings are interned
<a href=#457 id=457 data-nosnippet>457</a> </span><span class="attr">#[must_use]
<a href=#458 id=458 data-nosnippet>458</a> </span><span class="kw">pub fn </span>is_empty(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
<a href=#459 id=459 data-nosnippet>459</a> <span class="self">self</span>.strings.lock().is_empty()
<a href=#460 id=460 data-nosnippet>460</a> }
<a href=#461 id=461 data-nosnippet>461</a>
<a href=#462 id=462 data-nosnippet>462</a> <span class="doccomment">/// Clear all interned strings
<a href=#463 id=463 data-nosnippet>463</a> </span><span class="kw">pub fn </span>clear(<span class="kw-2">&</span><span class="self">self</span>) {
<a href=#464 id=464 data-nosnippet>464</a> <span class="self">self</span>.strings.lock().clear();
<a href=#465 id=465 data-nosnippet>465</a> }
<a href=#466 id=466 data-nosnippet>466</a>}
<a href=#467 id=467 data-nosnippet>467</a>
<a href=#468 id=468 data-nosnippet>468</a><span class="kw">impl </span>Default <span class="kw">for </span>StringInterner {
<a href=#469 id=469 data-nosnippet>469</a> <span class="kw">fn </span>default() -> <span class="self">Self </span>{
<a href=#470 id=470 data-nosnippet>470</a> <span class="self">Self</span>::new()
<a href=#471 id=471 data-nosnippet>471</a> }
<a href=#472 id=472 data-nosnippet>472</a>}
<a href=#473 id=473 data-nosnippet>473</a>
<a href=#474 id=474 data-nosnippet>474</a><span class="doccomment">/// Global string interner instance for application-wide string sharing
<a href=#475 id=475 data-nosnippet>475</a>///
<a href=#476 id=476 data-nosnippet>476</a>/// Uses `once_cell` for lazy initialization and arc-swap for potential future
<a href=#477 id=477 data-nosnippet>477</a>/// concurrent access optimizations.
<a href=#478 id=478 data-nosnippet>478</a></span><span class="kw">static </span>GLOBAL_INTERNER: std::sync::LazyLock<StringInterner> =
<a href=#479 id=479 data-nosnippet>479</a> std::sync::LazyLock::new(StringInterner::new);
<a href=#480 id=480 data-nosnippet>480</a>
<a href=#481 id=481 data-nosnippet>481</a><span class="doccomment">/// Get a reference to the global string interner
<a href=#482 id=482 data-nosnippet>482</a>///
<a href=#483 id=483 data-nosnippet>483</a>/// This provides application-wide string interning for memory efficiency.
<a href=#484 id=484 data-nosnippet>484</a>/// All calls to `global_interner()` return the same instance.
<a href=#485 id=485 data-nosnippet>485</a></span><span class="attr">#[must_use]
<a href=#486 id=486 data-nosnippet>486</a></span><span class="kw">pub fn </span>global_interner() -> <span class="kw-2">&</span><span class="lifetime">'static </span>StringInterner {
<a href=#487 id=487 data-nosnippet>487</a> <span class="kw-2">&</span>GLOBAL_INTERNER
<a href=#488 id=488 data-nosnippet>488</a>}</code></pre></div></section></main></body></html>