tartrazine/lexers/c#.xml

<lexer>
  <config>
    <name>C#</name>
    <alias>csharp</alias>
    <alias>c#</alias>
    <filename>*.cs</filename>
    <mime_type>text/x-csharp</mime_type>
    <dot_all>true</dot_all>
    <ensure_nl>true</ensure_nl>
  </config>
  <rules>
    <state name="root">
      <rule pattern="^\s*\[.*?\]">
        <token type="NameAttribute"/>
      </rule>
      <rule pattern="[^\S\n]+">
        <token type="Text"/>
      </rule>
      <rule pattern="\\\n">
        <token type="Text"/>
      </rule>
      <rule pattern="///[^\n\r]*">
        <token type="CommentSpecial"/>
      </rule>
      <rule pattern="//[^\n\r]*">
        <token type="CommentSingle"/>
      </rule>
      <rule pattern="/[*].*?[*]/">
        <token type="CommentMultiline"/>
      </rule>
      <rule pattern="\n">
        <token type="Text"/>
      </rule>
      <rule pattern="[~!%^&amp;*()+=|\[\]:;,.&lt;&gt;/?-]">
        <token type="Punctuation"/>
      </rule>
      <rule pattern="[{}]">
        <token type="Punctuation"/>
      </rule>
      <rule pattern="@&#34;(&#34;&#34;|[^&#34;])*&#34;">
        <token type="LiteralString"/>
      </rule>
      <rule pattern="\$@?&#34;(&#34;&#34;|[^&#34;])*&#34;">
        <token type="LiteralString"/>
      </rule>
      <rule pattern="&#34;(\\\\|\\&#34;|[^&#34;\n])*[&#34;\n]">
        <token type="LiteralString"/>
      </rule>
      <rule pattern="&#39;\\.&#39;|&#39;[^\\]&#39;">
        <token type="LiteralStringChar"/>
      </rule>
      <rule pattern="0[xX][0-9a-fA-F]+[Ll]?|\d[_\d]*(\.\d*)?([eE][+-]?\d+)?[flFLdD]?">
        <token type="LiteralNumber"/>
      </rule>
      <rule pattern="#[ \t]*(if|endif|else|elif|define|undef|line|error|warning|region|endregion|pragma|nullable)\b">
        <token type="CommentPreproc"/>
      </rule>
      <rule pattern="\b(extern)(\s+)(alias)\b">
        <bygroups>
          <token type="Keyword"/>
          <token type="Text"/>
          <token type="Keyword"/>
        </bygroups>
      </rule>
      <rule pattern="(as|await|base|break|by|case|catch|checked|continue|default|delegate|do|else|event|finally|fixed|for|foreach|goto|if|in|init|is|let|lock|new|on|out|params|readonly|ref|return|sizeof|stackalloc|switch|this|throw|try|typeof|unchecked|virtual|void|while|get|set|new|yield|add|remove|value|alias|ascending|descending|from|group|into|orderby|select|thenby|where|join|equals)\b">
        <token type="Keyword"/>
      </rule>
      <rule pattern="(global)(::)">
        <bygroups>
          <token type="Keyword"/>
          <token type="Punctuation"/>
        </bygroups>
      </rule>
      <rule pattern="(abstract|async|const|enum|explicit|extern|implicit|internal|operator|override|partial|private|protected|public|static|sealed|unsafe|volatile)\b">
        <token type="KeywordDeclaration"/>
      </rule>
      <rule pattern="(bool|byte|char|decimal|double|dynamic|float|int|long|object|sbyte|short|string|uint|ulong|ushort|var)\b\??">
        <token type="KeywordType"/>
      </rule>
      <rule pattern="(true|false|null)\b">
        <token type="KeywordConstant"/>
      </rule>
      <rule pattern="(class|struct|record|interface)(\s+)">
        <bygroups>
          <token type="Keyword"/>
          <token type="Text"/>
        </bygroups>
        <push state="class"/>
      </rule>
      <rule pattern="(namespace|using)(\s+)">
        <bygroups>
          <token type="Keyword"/>
          <token type="Text"/>
        </bygroups>
        <push state="namespace"/>
      </rule>
      <rule pattern="@?[_a-zA-Z]\w*">
        <token type="Name"/>
      </rule>
    </state>
    <state name="class">
      <rule pattern="@?[_a-zA-Z]\w*">
        <token type="NameClass"/>
        <pop depth="1"/>
      </rule>
      <rule>
        <pop depth="1"/>
      </rule>
    </state>
    <state name="namespace">
      <rule pattern="(?=\()">
        <token type="Text"/>
        <pop depth="1"/>
      </rule>
      <rule pattern="(@?[_a-zA-Z]\w*|\.)+">
        <token type="NameNamespace"/>
        <pop depth="1"/>
      </rule>
    </state>
  </rules>
</lexer>