src/tools/rust-analyzer/crates/ide/src/syntax_highlighting/test_data/highlight_macros.html


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<pre><code><span class="module crate_root library">proc_macros</span><span class="operator">::</span><span class="macro library">mirror</span><span class="macro_bang">!</span> <span class="brace">{</span>
    <span class="brace">{</span>
        <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>
        <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>
    <span class="brace">}</span> <span class="struct declaration">Foo</span> <span class="keyword">struct</span>
<span class="brace">}</span>
<span class="keyword">macro_rules</span><span class="macro_bang">!</span> <span class="macro declaration">def_fn</span> <span class="brace">{</span>
    <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>
<span class="brace">}</span>

<span class="macro">def_fn</span><span class="macro_bang">!</span> <span class="brace">{</span>
    <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>
        <span class="numeric_literal">100</span>
    <span class="brace">}</span>
<span class="brace">}</span>

<span class="keyword">macro_rules</span><span class="macro_bang">!</span> <span class="macro declaration">dont_color_me_braces</span> <span class="brace">{</span>
    <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>
<span class="brace">}</span>

<span class="keyword">macro_rules</span><span class="macro_bang">!</span> <span class="macro declaration">noop</span> <span class="brace">{</span>
    <span class="parenthesis">(</span><span class="punctuation">$</span>expr<span class="colon">:</span>expr<span class="parenthesis">)</span> <span class="operator">=</span><span class="angle">&gt;</span> <span class="brace">{</span>
        <span class="punctuation">$</span>expr
    <span class="brace">}</span>
<span class="brace">}</span>

<span class="comment documentation">/// textually shadow previous definition</span>
<span class="keyword">macro_rules</span><span class="macro_bang">!</span> <span class="macro declaration">noop</span> <span class="brace">{</span>
    <span class="parenthesis">(</span><span class="punctuation">$</span>expr<span class="colon">:</span>expr<span class="parenthesis">)</span> <span class="operator">=</span><span class="angle">&gt;</span> <span class="brace">{</span>
        <span class="punctuation">$</span>expr
    <span class="brace">}</span>
<span class="brace">}</span>

<span class="keyword">macro_rules</span><span class="macro_bang">!</span> <span class="macro declaration">keyword_frag</span> <span class="brace">{</span>
    <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>
<span class="brace">}</span>

<span class="keyword">macro</span> <span class="macro declaration">with_args</span><span class="parenthesis">(</span><span class="punctuation">$</span>i<span class="colon">:</span>ident<span class="parenthesis">)</span> <span class="brace">{</span>
    <span class="punctuation">$</span>i
<span class="brace">}</span>

<span class="keyword">macro</span> <span class="macro declaration">without_args</span> <span class="brace">{</span>
    <span class="parenthesis">(</span><span class="punctuation">$</span>i<span class="colon">:</span>ident<span class="parenthesis">)</span> <span class="operator">=</span><span class="angle">&gt;</span> <span class="brace">{</span>
        <span class="punctuation">$</span>i
    <span class="brace">}</span>
<span class="brace">}</span>

<span class="keyword">fn</span> <span class="function declaration">main</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
    <span class="unresolved_reference">println</span><span class="macro_bang">!</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>
    <span class="macro">dont_color_me_braces</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
    <span class="macro">noop</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="macro">noop</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="brace">}</span></code></pre>