Viewing github.com/alecthomas/chroma/lexers/embedded/whiley.xml

```
<lexer>
```
```
  <config>
```
```
    <name>Whiley</name>
```
```
    <alias>whiley</alias>
```
```
    <filename>*.whiley</filename>
```

    <mime_type>text/x-whiley</mime_type>

```
  </config>
```
```
  <rules>
```
```
    <state name="root">
```
```
      <rule pattern="\n">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="\s+">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="\\\n">
```
```
        <token type="Text"/>
```
```
      </rule>
```

      <rule pattern="/[*](.|\n)*?[*]/">

        <token type="CommentMultiline"/>

```
      </rule>
```
```
      <rule pattern="//.*?\n">
```
```
        <token type="CommentSingle"/>
```
```
      </rule>      
```

      <rule pattern="(function|import|from|method|property|type|with|variant)\b">

        <token type="KeywordDeclaration"/>

```
      </rule>
```

      <rule pattern="(assert|assume|all|break|case|continue|debug|default|do|else|ensures|export|fail|final|for|if|in|is|native|no|new|private|protected|public|return|requires|skip|some|switch|unsafe|where|while)\b">

```
        <token type="Keyword"/>
```
```
      </rule>
```

      <rule pattern="(true|false|null)\b">

        <token type="KeywordConstant"/>

```
      </rule>
```

      <rule pattern="(bool|byte|int|void)\b">

```
        <token type="KeywordType"/>
```
```
      </rule>
```
```
      <rule pattern="0b(?:_?[01])+">
```

        <token type="LiteralNumberBin"/>

```
      </rule>      
```

      <rule pattern="0[xX][0-9a-fA-F]+">

        <token type="LiteralNumberHex"/>

```
      </rule>
```
```
      <rule pattern="(0|[1-9][0-9]*)">
```

        <token type="LiteralNumberInteger"/>

```
      </rule>
```
```
      <rule pattern="[a-zA-Z_]\w*">
```
```
        <token type="Name"/>
```
```
      </rule>
```

      <rule pattern="[+%=&gt;&lt;|^!?/\-*&amp;~:]">

```
        <token type="Operator"/>
```
```
      </rule>      
```
```
      <rule pattern="[{}()\[\],.;\|]">
```
```
        <token type="Punctuation"/>
```
```
      </rule>      
```
```
    </state>
```
```
  </rules>
```
```
</lexer>
```