tartrazine/lexers/protocol_buffer.xml

<lexer>
  <config>
    <name>Protocol Buffer</name>
    <alias>protobuf</alias>
    <alias>proto</alias>
    <filename>*.proto</filename>
  </config>
  <rules>
    <state name="package">
      <rule pattern="[a-zA-Z_]\w*">
        <token type="NameNamespace"/>
        <pop depth="1"/>
      </rule>
      <rule>
        <pop depth="1"/>
      </rule>
    </state>
    <state name="message">
      <rule pattern="[a-zA-Z_]\w*">
        <token type="NameClass"/>
        <pop depth="1"/>
      </rule>
      <rule>
        <pop depth="1"/>
      </rule>
    </state>
    <state name="type">
      <rule pattern="[a-zA-Z_]\w*">
        <token type="Name"/>
        <pop depth="1"/>
      </rule>
      <rule>
        <pop depth="1"/>
      </rule>
    </state>
    <state name="root">
      <rule pattern="[ \t]+">
        <token type="Text"/>
      </rule>
      <rule pattern="[,;{}\[\]()&lt;&gt;]">
        <token type="Punctuation"/>
      </rule>
      <rule pattern="/(\\\n)?/(\n|(.|\n)*?[^\\]\n)">
        <token type="CommentSingle"/>
      </rule>
      <rule pattern="/(\\\n)?\*(.|\n)*?\*(\\\n)?/">
        <token type="CommentMultiline"/>
      </rule>
      <rule pattern="\b(extensions|required|repeated|optional|returns|default|option|packed|import|ctype|oneof|max|rpc|to)\b">
        <token type="Keyword"/>
      </rule>
      <rule pattern="(sfixed32|sfixed64|fixed32|fixed64|sint32|sint64|double|string|uint32|uint64|int32|float|int64|bytes|bool)\b">
        <token type="KeywordType"/>
      </rule>
      <rule pattern="(true|false)\b">
        <token type="KeywordConstant"/>
      </rule>
      <rule pattern="(package)(\s+)">
        <bygroups>
          <token type="KeywordNamespace"/>
          <token type="Text"/>
        </bygroups>
        <push state="package"/>
      </rule>
      <rule pattern="(message|extend)(\s+)">
        <bygroups>
          <token type="KeywordDeclaration"/>
          <token type="Text"/>
        </bygroups>
        <push state="message"/>
      </rule>
      <rule pattern="(enum|group|service)(\s+)">
        <bygroups>
          <token type="KeywordDeclaration"/>
          <token type="Text"/>
        </bygroups>
        <push state="type"/>
      </rule>
      <rule pattern="\&#34;.*?\&#34;">
        <token type="LiteralString"/>
      </rule>
      <rule pattern="\&#39;.*?\&#39;">
        <token type="LiteralString"/>
      </rule>
      <rule pattern="(\d+\.\d*|\.\d+|\d+)[eE][+-]?\d+[LlUu]*">
        <token type="LiteralNumberFloat"/>
      </rule>
      <rule pattern="(\d+\.\d*|\.\d+|\d+[fF])[fF]?">
        <token type="LiteralNumberFloat"/>
      </rule>
      <rule pattern="(\-?(inf|nan))\b">
        <token type="LiteralNumberFloat"/>
      </rule>
      <rule pattern="0x[0-9a-fA-F]+[LlUu]*">
        <token type="LiteralNumberHex"/>
      </rule>
      <rule pattern="0[0-7]+[LlUu]*">
        <token type="LiteralNumberOct"/>
      </rule>
      <rule pattern="\d+[LlUu]*">
        <token type="LiteralNumberInteger"/>
      </rule>
      <rule pattern="[+-=]">
        <token type="Operator"/>
      </rule>
      <rule pattern="([a-zA-Z_][\w.]*)([ \t]*)(=)">
        <bygroups>
          <token type="Name"/>
          <token type="Text"/>
          <token type="Operator"/>
        </bygroups>
      </rule>
      <rule pattern="[a-zA-Z_][\w.]*">
        <token type="Name"/>
      </rule>
    </state>
  </rules>
</lexer>