crates/ide/src/syntax_highlighting/test_data/highlighting.html

   1
   2 <style>
   3 body                { margin: 0; }
   4 pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padding: 0.4em; }
   5
   6 .lifetime           { color: #DFAF8F; font-style: italic; }
   7 .label              { color: #DFAF8F; font-style: italic; }
   8 .comment            { color: #7F9F7F; }
   9 .documentation      { color: #629755; }
  10 .intra_doc_link     { font-style: italic; }
  11 .injected           { opacity: 0.65 ; }
  12 .struct, .enum      { color: #7CB8BB; }
  13 .enum_variant       { color: #BDE0F3; }
  14 .string_literal     { color: #CC9393; }
  15 .field              { color: #94BFF3; }
  16 .function           { color: #93E0E3; }
  17 .function.unsafe    { color: #BC8383; }
  18 .trait.unsafe       { color: #BC8383; }
  19 .operator.unsafe    { color: #BC8383; }
  20 .mutable.unsafe     { color: #BC8383; text-decoration: underline; }
  21 .keyword.unsafe     { color: #BC8383; font-weight: bold; }
  22 .parameter          { color: #94BFF3; }
  23 .text               { color: #DCDCCC; }
  24 .type               { color: #7CB8BB; }
  25 .builtin_type       { color: #8CD0D3; }
  26 .type_param         { color: #DFAF8F; }
  27 .attribute          { color: #94BFF3; }
  28 .numeric_literal    { color: #BFEBBF; }
  29 .bool_literal       { color: #BFE6EB; }
  30 .macro              { color: #94BFF3; }
  31 .module             { color: #AFD8AF; }
  32 .value_param        { color: #DCDCCC; }
  33 .variable           { color: #DCDCCC; }
  34 .format_specifier   { color: #CC696B; }
  35 .mutable            { text-decoration: underline; }
  36 .escape_sequence    { color: #94BFF3; }
  37 .keyword            { color: #F0DFAF; font-weight: bold; }
  38 .control            { font-style: italic; }
  39 .reference          { font-style: italic; font-weight: bold; }
  40
  41 .unresolved_reference { color: #FC5555; text-decoration: wavy underline; }
  42 </style>
  43 <pre><code><span class="keyword">use</span> <span class="module">inner</span><span class="operator">::</span><span class="brace">{</span><span class="self_keyword">self</span> <span class="keyword">as</span> <span class="module declaration">inner_mod</span><span class="brace">}</span><span class="semicolon">;</span>
  44 <span class="keyword">mod</span> <span class="module declaration">inner</span> <span class="brace">{</span><span class="brace">}</span>
  45
  46 <span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="module attribute">proc_macros</span><span class="operator attribute">::</span><span class="macro attribute">identity</span><span class="attribute attribute">]</span>
  47 <span class="keyword">pub</span> <span class="keyword">mod</span> <span class="module declaration public">ops</span> <span class="brace">{</span>
  48     <span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn_once"</span><span class="attribute attribute">]</span>
  49     <span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">FnOnce</span><span class="angle">&lt;</span><span class="type_param declaration">Args</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="brace">}</span>
  50
  51     <span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn_mut"</span><span class="attribute attribute">]</span>
  52     <span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">FnMut</span><span class="angle">&lt;</span><span class="type_param declaration">Args</span><span class="angle">&gt;</span><span class="colon">:</span> <span class="trait public">FnOnce</span><span class="angle">&lt;</span><span class="type_param">Args</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="brace">}</span>
  53
  54     <span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn"</span><span class="attribute attribute">]</span>
  55     <span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">Fn</span><span class="angle">&lt;</span><span class="type_param declaration">Args</span><span class="angle">&gt;</span><span class="colon">:</span> <span class="trait public">FnMut</span><span class="angle">&lt;</span><span class="type_param">Args</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="brace">}</span>
  56 <span class="brace">}</span>
  57
  58 proc_macros::<span class="macro">mirror!</span> <span class="brace">{</span>
  59     <span class="brace">{</span>
  60         <span class="comma">,</span><span class="builtin_type">i32</span> <span class="colon">:</span><span class="field declaration public">x</span> <span class="keyword">pub</span>
  61         <span class="comma">,</span><span class="builtin_type">i32</span> <span class="colon">:</span><span class="field declaration public">y</span> <span class="keyword">pub</span>
  62     <span class="brace">}</span> <span class="struct declaration">Foo</span> <span class="keyword">struct</span>
  63 <span class="brace">}</span>
  64
  65 <span class="keyword">trait</span> <span class="trait declaration">Bar</span> <span class="keyword">where</span> <span class="type_param">Self</span><span class="colon">:</span> <span class="brace">{</span>
  66     <span class="keyword">fn</span> <span class="function associated declaration reference trait">bar</span><span class="parenthesis">(</span><span class="operator">&</span><span class="self_keyword declaration reference">self</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">i32</span><span class="semicolon">;</span>
  67 <span class="brace">}</span>
  68
  69 <span class="keyword">impl</span> <span class="trait">Bar</span> <span class="keyword">for</span> <span class="struct">Foo</span> <span class="keyword">where</span> <span class="self_type">Self</span><span class="colon">:</span> <span class="brace">{</span>
  70     <span class="keyword">fn</span> <span class="function associated declaration reference trait">bar</span><span class="parenthesis">(</span><span class="operator">&</span><span class="self_keyword declaration reference">self</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">i32</span> <span class="brace">{</span>
  71         <span class="self_keyword reference">self</span><span class="operator">.</span><span class="field public">x</span>
  72     <span class="brace">}</span>
  73 <span class="brace">}</span>
  74
  75 <span class="keyword">impl</span> <span class="struct">Foo</span> <span class="brace">{</span>
  76     <span class="keyword">fn</span> <span class="function associated consuming declaration">baz</span><span class="parenthesis">(</span><span class="keyword">mut</span> <span class="self_keyword declaration mutable">self</span><span class="comma">,</span> <span class="value_param declaration">f</span><span class="colon">:</span> <span class="struct">Foo</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">i32</span> <span class="brace">{</span>
  77         <span class="value_param">f</span><span class="operator">.</span><span class="function associated consuming">baz</span><span class="parenthesis">(</span><span class="self_keyword consuming mutable">self</span><span class="parenthesis">)</span>
  78     <span class="brace">}</span>
  79
  80     <span class="keyword">fn</span> <span class="function associated declaration mutable reference">qux</span><span class="parenthesis">(</span><span class="operator">&</span><span class="keyword">mut</span> <span class="self_keyword declaration mutable reference">self</span><span class="parenthesis">)</span> <span class="brace">{</span>
  81         <span class="self_keyword mutable reference">self</span><span class="operator">.</span><span class="field public">x</span> <span class="operator">=</span> <span class="numeric_literal">0</span><span class="semicolon">;</span>
  82     <span class="brace">}</span>
  83
  84     <span class="keyword">fn</span> <span class="function associated declaration reference">quop</span><span class="parenthesis">(</span><span class="operator">&</span><span class="self_keyword declaration reference">self</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">i32</span> <span class="brace">{</span>
  85         <span class="self_keyword reference">self</span><span class="operator">.</span><span class="field public">x</span>
  86     <span class="brace">}</span>
  87 <span class="brace">}</span>
  88
  89 <span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="macro attribute">derive</span><span class="parenthesis attribute">(</span><span class="macro attribute default_library library">Copy</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
  90 <span class="keyword">struct</span> <span class="struct declaration">FooCopy</span> <span class="brace">{</span>
  91     <span class="field declaration">x</span><span class="colon">:</span> <span class="builtin_type">u32</span><span class="comma">,</span>
  92 <span class="brace">}</span>
  93
  94 <span class="keyword">impl</span> <span class="struct">FooCopy</span> <span class="brace">{</span>
  95     <span class="keyword">fn</span> <span class="function associated consuming declaration">baz</span><span class="parenthesis">(</span><span class="self_keyword declaration">self</span><span class="comma">,</span> <span class="value_param declaration">f</span><span class="colon">:</span> <span class="struct">FooCopy</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">u32</span> <span class="brace">{</span>
  96         <span class="value_param">f</span><span class="operator">.</span><span class="function associated">baz</span><span class="parenthesis">(</span><span class="self_keyword">self</span><span class="parenthesis">)</span>
  97     <span class="brace">}</span>
  98
  99     <span class="keyword">fn</span> <span class="function associated declaration mutable reference">qux</span><span class="parenthesis">(</span><span class="operator">&</span><span class="keyword">mut</span> <span class="self_keyword declaration mutable reference">self</span><span class="parenthesis">)</span> <span class="brace">{</span>
 100         <span class="self_keyword mutable reference">self</span><span class="operator">.</span><span class="field">x</span> <span class="operator">=</span> <span class="numeric_literal">0</span><span class="semicolon">;</span>
 101     <span class="brace">}</span>
 102
 103     <span class="keyword">fn</span> <span class="function associated declaration reference">quop</span><span class="parenthesis">(</span><span class="operator">&</span><span class="self_keyword declaration reference">self</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">u32</span> <span class="brace">{</span>
 104         <span class="self_keyword reference">self</span><span class="operator">.</span><span class="field">x</span>
 105     <span class="brace">}</span>
 106 <span class="brace">}</span>
 107
 108 <span class="keyword">fn</span> <span class="function declaration">str</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
 109     <span class="function">str</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 110 <span class="brace">}</span>
 111
 112 <span class="keyword">fn</span> <span class="function declaration">foo</span><span class="angle">&lt;</span><span class="lifetime declaration">'a</span><span class="comma">,</span> <span class="type_param declaration">T</span><span class="angle">&gt;</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="type_param">T</span> <span class="brace">{</span>
 113     <span class="function">foo</span><span class="operator">::</span><span class="angle">&lt;</span><span class="lifetime">'a</span><span class="comma">,</span> <span class="builtin_type">i32</span><span class="angle">&gt;</span><span class="parenthesis">(</span><span class="parenthesis">)</span>
 114 <span class="brace">}</span>
 115
 116 <span class="keyword">fn</span> <span class="function declaration">never</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">!</span> <span class="brace">{</span>
 117     <span class="keyword control">loop</span> <span class="brace">{</span><span class="brace">}</span>
 118 <span class="brace">}</span>
 119
 120 <span class="keyword">fn</span> <span class="function declaration">const_param</span><span class="angle">&lt;</span><span class="keyword">const</span> <span class="const_param declaration">FOO</span><span class="colon">:</span> <span class="builtin_type">usize</span><span class="angle">&gt;</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">usize</span> <span class="brace">{</span>
 121     <span class="const_param">FOO</span>
 122 <span class="brace">}</span>
 123
 124 <span class="keyword">use</span> <span class="module public">ops</span><span class="operator">::</span><span class="trait public">Fn</span><span class="semicolon">;</span>
 125 <span class="keyword">fn</span> <span class="function declaration">baz</span><span class="angle">&lt;</span><span class="type_param declaration">F</span><span class="colon">:</span> <span class="trait public">Fn</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="parenthesis">(</span><span class="parenthesis">)</span><span class="angle">&gt;</span><span class="parenthesis">(</span><span class="value_param callable declaration">f</span><span class="colon">:</span> <span class="type_param">F</span><span class="parenthesis">)</span> <span class="brace">{</span>
 126     <span class="value_param callable">f</span><span class="parenthesis">(</span><span class="parenthesis">)</span>
 127 <span class="brace">}</span>
 128
 129 <span class="keyword">fn</span> <span class="function declaration">foobar</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="keyword">impl</span> <span class="trait default_library library">Copy</span> <span class="brace">{</span><span class="brace">}</span>
 130
 131 <span class="keyword">fn</span> <span class="function declaration">foo</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
 132     <span class="keyword">let</span> <span class="variable declaration">bar</span> <span class="operator">=</span> <span class="function">foobar</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 133 <span class="brace">}</span>
 134
 135 <span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">def_fn</span> <span class="brace">{</span>
 136     <span class="parenthesis">(</span><span class="punctuation">$</span><span class="parenthesis">(</span><span class="punctuation">$</span>tt<span class="colon">:</span>tt<span class="parenthesis">)</span><span class="punctuation">*</span><span class="parenthesis">)</span> <span class="operator">=</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="punctuation">$</span><span class="parenthesis">(</span><span class="punctuation">$</span>tt<span class="parenthesis">)</span><span class="punctuation">*</span><span class="brace">}</span>
 137 <span class="brace">}</span>
 138
 139 <span class="macro">def_fn!</span> <span class="brace">{</span>
 140     <span class="keyword">fn</span> <span class="function declaration">bar</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="operator">-</span><span class="operator">&gt;</span> <span class="builtin_type">u32</span> <span class="brace">{</span>
 141         <span class="numeric_literal">100</span>
 142     <span class="brace">}</span>
 143 <span class="brace">}</span>
 144
 145 <span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">dont_color_me_braces</span> <span class="brace">{</span>
 146     <span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="operator">=</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="numeric_literal">0</span><span class="brace">}</span>
 147 <span class="brace">}</span>
 148
 149 <span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">noop</span> <span class="brace">{</span>
 150     <span class="parenthesis">(</span><span class="punctuation">$</span>expr<span class="colon">:</span>expr<span class="parenthesis">)</span> <span class="operator">=</span><span class="angle">&gt;</span> <span class="brace">{</span>
 151         <span class="punctuation">$</span>expr
 152     <span class="brace">}</span>
 153 <span class="brace">}</span>
 154
 155 <span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">keyword_frag</span> <span class="brace">{</span>
 156     <span class="parenthesis">(</span><span class="punctuation">$</span>type<span class="colon">:</span>ty<span class="parenthesis">)</span> <span class="operator">=</span><span class="angle">&gt;</span> <span class="parenthesis">(</span><span class="punctuation">$</span>type<span class="parenthesis">)</span>
 157 <span class="brace">}</span>
 158
 159 <span class="keyword">macro</span> <span class="macro declaration">with_args</span><span class="parenthesis">(</span><span class="punctuation">$</span>i<span class="colon">:</span>ident<span class="parenthesis">)</span> <span class="brace">{</span>
 160     <span class="punctuation">$</span>i
 161 <span class="brace">}</span>
 162
 163 <span class="keyword">macro</span> <span class="macro declaration">without_args</span> <span class="brace">{</span>
 164     <span class="parenthesis">(</span><span class="punctuation">$</span>i<span class="colon">:</span>ident<span class="parenthesis">)</span> <span class="operator">=</span><span class="angle">&gt;</span> <span class="brace">{</span>
 165         <span class="punctuation">$</span>i
 166     <span class="brace">}</span>
 167 <span class="brace">}</span>
 168
 169 <span class="comment">// comment</span>
 170 <span class="keyword">fn</span> <span class="function declaration">main</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
 171     <span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello, {}!"</span><span class="comma">,</span> <span class="numeric_literal">92</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 172     <span class="macro">dont_color_me_braces!</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 173
 174     <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable">vec</span> <span class="operator">=</span> <span class="unresolved_reference">Vec</span><span class="operator">::</span><span class="unresolved_reference">new</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 175     <span class="keyword control">if</span> <span class="bool_literal">true</span> <span class="brace">{</span>
 176         <span class="keyword">let</span> <span class="variable declaration">x</span> <span class="operator">=</span> <span class="numeric_literal">92</span><span class="semicolon">;</span>
 177         <span class="variable mutable">vec</span><span class="operator">.</span><span class="unresolved_reference">push</span><span class="parenthesis">(</span><span class="struct">Foo</span> <span class="brace">{</span> <span class="field">x</span><span class="comma">,</span> <span class="field public">y</span><span class="colon">:</span> <span class="numeric_literal">1</span> <span class="brace">}</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 178     <span class="brace">}</span>
 179
 180     <span class="keyword control">for</span> <span class="variable declaration">e</span> <span class="keyword control">in</span> <span class="variable mutable">vec</span> <span class="brace">{</span>
 181         <span class="comment">// Do nothing</span>
 182     <span class="brace">}</span>
 183
 184     <span class="macro">noop!</span><span class="parenthesis">(</span><span class="macro">noop</span><span class="macro">!</span><span class="parenthesis">(</span><span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 185
 186     <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable">x</span> <span class="operator">=</span> <span class="numeric_literal">42</span><span class="semicolon">;</span>
 187     <span class="variable mutable">x</span> <span class="arithmetic mutable">+=</span> <span class="numeric_literal">1</span><span class="semicolon">;</span>
 188     <span class="keyword">let</span> <span class="variable declaration mutable reference">y</span> <span class="operator">=</span> <span class="operator">&</span><span class="keyword">mut</span> <span class="variable mutable">x</span><span class="semicolon">;</span>
 189     <span class="keyword">let</span> <span class="variable declaration reference">z</span> <span class="operator">=</span> <span class="operator">&</span><span class="variable mutable reference">y</span><span class="semicolon">;</span>
 190
 191     <span class="keyword">let</span> <span class="struct">Foo</span> <span class="brace">{</span> <span class="field public">x</span><span class="colon">:</span> <span class="variable declaration">z</span><span class="comma">,</span> <span class="field">y</span> <span class="brace">}</span> <span class="operator">=</span> <span class="struct">Foo</span> <span class="brace">{</span> <span class="field public">x</span><span class="colon">:</span> <span class="variable reference">z</span><span class="comma">,</span> <span class="field">y</span> <span class="brace">}</span><span class="semicolon">;</span>
 192
 193     <span class="variable">y</span><span class="semicolon">;</span>
 194
 195     <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable">foo</span> <span class="operator">=</span> <span class="struct">Foo</span> <span class="brace">{</span> <span class="field">x</span><span class="comma">,</span> <span class="field public">y</span><span class="colon">:</span> <span class="variable mutable">x</span> <span class="brace">}</span><span class="semicolon">;</span>
 196     <span class="keyword">let</span> <span class="variable declaration">foo2</span> <span class="operator">=</span> <span class="struct">Foo</span> <span class="brace">{</span> <span class="field">x</span><span class="comma">,</span> <span class="field public">y</span><span class="colon">:</span> <span class="variable mutable">x</span> <span class="brace">}</span><span class="semicolon">;</span>
 197     <span class="variable mutable">foo</span><span class="operator">.</span><span class="function associated reference">quop</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 198     <span class="variable mutable">foo</span><span class="operator">.</span><span class="function associated mutable reference">qux</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 199     <span class="variable mutable">foo</span><span class="operator">.</span><span class="function associated consuming">baz</span><span class="parenthesis">(</span><span class="variable consuming">foo2</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 200
 201     <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable">copy</span> <span class="operator">=</span> <span class="struct">FooCopy</span> <span class="brace">{</span> <span class="field">x</span> <span class="brace">}</span><span class="semicolon">;</span>
 202     <span class="variable mutable">copy</span><span class="operator">.</span><span class="function associated reference">quop</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 203     <span class="variable mutable">copy</span><span class="operator">.</span><span class="function associated mutable reference">qux</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 204     <span class="variable mutable">copy</span><span class="operator">.</span><span class="function associated">baz</span><span class="parenthesis">(</span><span class="variable mutable">copy</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 205
 206     <span class="keyword">let</span> <span class="variable callable declaration">a</span> <span class="operator">=</span> <span class="punctuation">|</span><span class="value_param declaration">x</span><span class="punctuation">|</span> <span class="value_param">x</span><span class="semicolon">;</span>
 207     <span class="keyword">let</span> <span class="variable callable declaration">bar</span> <span class="operator">=</span> <span class="struct">Foo</span><span class="operator">::</span><span class="function associated consuming">baz</span><span class="semicolon">;</span>
 208
 209     <span class="keyword">let</span> <span class="variable declaration">baz</span> <span class="operator">=</span> <span class="parenthesis">(</span><span class="numeric_literal">-</span><span class="numeric_literal">42</span><span class="comma">,</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 210     <span class="keyword">let</span> <span class="variable declaration">baz</span> <span class="operator">=</span> <span class="operator">-</span><span class="variable">baz</span><span class="operator">.</span><span class="field">0</span><span class="semicolon">;</span>
 211
 212     <span class="keyword">let</span> <span class="punctuation">_</span> <span class="operator">=</span> <span class="logical">!</span><span class="bool_literal">true</span><span class="semicolon">;</span>
 213
 214     <span class="label declaration">'foo</span><span class="colon">:</span> <span class="keyword control">loop</span> <span class="brace">{</span>
 215         <span class="keyword control">break</span> <span class="label">'foo</span><span class="semicolon">;</span>
 216         <span class="keyword control">continue</span> <span class="label">'foo</span><span class="semicolon">;</span>
 217     <span class="brace">}</span>
 218 <span class="brace">}</span>
 219
 220 <span class="keyword">enum</span> <span class="enum declaration">Option</span><span class="angle">&lt;</span><span class="type_param declaration">T</span><span class="angle">&gt;</span> <span class="brace">{</span>
 221     <span class="enum_variant declaration">Some</span><span class="parenthesis">(</span><span class="type_param">T</span><span class="parenthesis">)</span><span class="comma">,</span>
 222     <span class="enum_variant declaration">None</span><span class="comma">,</span>
 223 <span class="brace">}</span>
 224 <span class="keyword">use</span> <span class="enum">Option</span><span class="operator">::</span><span class="punctuation">*</span><span class="semicolon">;</span>
 225
 226 <span class="keyword">impl</span><span class="angle">&lt;</span><span class="type_param declaration">T</span><span class="angle">&gt;</span> <span class="enum">Option</span><span class="angle">&lt;</span><span class="type_param">T</span><span class="angle">&gt;</span> <span class="brace">{</span>
 227     <span class="keyword">fn</span> <span class="function associated consuming declaration">and</span><span class="angle">&lt;</span><span class="type_param declaration">U</span><span class="angle">&gt;</span><span class="parenthesis">(</span><span class="self_keyword declaration">self</span><span class="comma">,</span> <span class="value_param declaration">other</span><span class="colon">:</span> <span class="enum">Option</span><span class="angle">&lt;</span><span class="type_param">U</span><span class="angle">&gt;</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="enum">Option</span><span class="angle">&lt;</span><span class="parenthesis">(</span><span class="type_param">T</span><span class="comma">,</span> <span class="type_param">U</span><span class="parenthesis">)</span><span class="angle">&gt;</span> <span class="brace">{</span>
 228         <span class="keyword control">match</span> <span class="value_param">other</span> <span class="brace">{</span>
 229             <span class="enum_variant">None</span> <span class="operator">=&gt;</span> <span class="macro">unimplemented!</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="comma">,</span>
 230             <span class="variable declaration">Nope</span> <span class="operator">=&gt;</span> <span class="variable">Nope</span><span class="comma">,</span>
 231         <span class="brace">}</span>
 232     <span class="brace">}</span>
 233 <span class="brace">}</span>
 234
 235 <span class="keyword async">async</span> <span class="keyword">fn</span> <span class="function async declaration">learn_and_sing</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
 236     <span class="keyword">let</span> <span class="variable declaration">song</span> <span class="operator">=</span> <span class="unresolved_reference">learn_song</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="operator">.</span><span class="keyword async control">await</span><span class="semicolon">;</span>
 237     <span class="unresolved_reference">sing_song</span><span class="parenthesis">(</span><span class="variable consuming">song</span><span class="parenthesis">)</span><span class="operator">.</span><span class="keyword async control">await</span><span class="semicolon">;</span>
 238 <span class="brace">}</span>
 239
 240 <span class="keyword async">async</span> <span class="keyword">fn</span> <span class="function async declaration">async_main</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
 241     <span class="keyword">let</span> <span class="variable declaration">f1</span> <span class="operator">=</span> <span class="function async">learn_and_sing</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 242     <span class="keyword">let</span> <span class="variable declaration">f2</span> <span class="operator">=</span> <span class="unresolved_reference">dance</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 243     futures::<span class="macro">join!</span><span class="parenthesis">(</span>f1<span class="comma">,</span> f2<span class="parenthesis">)</span><span class="semicolon">;</span>
 244 <span class="brace">}</span>
 245
 246 <span class="keyword">fn</span> <span class="function declaration">use_foo_items</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
 247     <span class="keyword">let</span> <span class="variable declaration">bob</span> <span class="operator">=</span> <span class="module crate_root library">foo</span><span class="operator">::</span><span class="struct library">Person</span> <span class="brace">{</span>
 248         <span class="field library">name</span><span class="colon">:</span> <span class="string_literal">"Bob"</span><span class="comma">,</span>
 249         <span class="field library">age</span><span class="colon">:</span> <span class="module crate_root library">foo</span><span class="operator">::</span><span class="module library">consts</span><span class="operator">::</span><span class="constant library">NUMBER</span><span class="comma">,</span>
 250     <span class="brace">}</span><span class="semicolon">;</span>
 251
 252     <span class="keyword">let</span> <span class="variable declaration">control_flow</span> <span class="operator">=</span> <span class="module crate_root library">foo</span><span class="operator">::</span><span class="function library">identity</span><span class="parenthesis">(</span><span class="module crate_root library">foo</span><span class="operator">::</span><span class="enum library">ControlFlow</span><span class="operator">::</span><span class="enum_variant library">Continue</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 253
 254     <span class="keyword control">if</span> <span class="variable">control_flow</span><span class="operator">.</span><span class="function associated consuming library">should_die</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
 255         foo::<span class="macro">die!</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 256     <span class="brace">}</span>
 257 <span class="brace">}</span>
 258
 259 <span class="keyword">pub</span> <span class="keyword">enum</span> <span class="enum declaration public">Bool</span> <span class="brace">{</span> <span class="enum_variant declaration public">True</span><span class="comma">,</span> <span class="enum_variant declaration public">False</span> <span class="brace">}</span>
 260
 261 <span class="keyword">impl</span> <span class="enum public">Bool</span> <span class="brace">{</span>
 262     <span class="keyword">pub</span> <span class="keyword">const</span> <span class="keyword">fn</span> <span class="function associated consuming declaration public">to_primitive</span><span class="parenthesis">(</span><span class="self_keyword declaration">self</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">bool</span> <span class="brace">{</span>
 263         <span class="macro">matches!</span><span class="parenthesis">(</span>self<span class="comma">,</span> Self<span class="colon">:</span><span class="colon">:</span>True<span class="parenthesis">)</span>
 264     <span class="brace">}</span>
 265 <span class="brace">}</span>
 266 <span class="keyword">const</span> <span class="constant declaration">USAGE_OF_BOOL</span><span class="colon">:</span><span class="builtin_type">bool</span> <span class="operator">=</span> <span class="enum public">Bool</span><span class="operator">::</span><span class="enum_variant public">True</span><span class="operator">.</span><span class="function associated consuming public">to_primitive</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
 267
 268 <span class="keyword">trait</span> <span class="trait declaration">Baz</span> <span class="brace">{</span>
 269     <span class="keyword">type</span> <span class="type_alias associated declaration trait">Qux</span><span class="semicolon">;</span>
 270 <span class="brace">}</span>
 271
 272 <span class="keyword">fn</span> <span class="function declaration">baz</span><span class="angle">&lt;</span><span class="type_param declaration">T</span><span class="angle">&gt;</span><span class="parenthesis">(</span><span class="value_param declaration">t</span><span class="colon">:</span> <span class="type_param">T</span><span class="parenthesis">)</span>
 273 <span class="keyword">where</span>
 274     <span class="type_param">T</span><span class="colon">:</span> <span class="trait">Baz</span><span class="comma">,</span>
 275     <span class="angle">&lt;</span><span class="type_param">T</span> <span class="keyword">as</span> <span class="trait">Baz</span><span class="angle">&gt;</span><span class="operator">::</span><span class="type_alias associated trait">Qux</span><span class="colon">:</span> <span class="trait">Bar</span> <span class="brace">{</span><span class="brace">}</span>
 276
 277 </code></pre>