<lexer>

  <config>

    <name>YAML</name>

    <alias>yaml</alias>

    <filename>*.yaml</filename>

    <filename>*.yml</filename>

    <mime_type>text/x-yaml</mime_type>

  </config>

  <rules>

    <state name="root">

      <rule>

        <include state="whitespace"/>

      </rule>

      <rule pattern="^---">

        <token type="NameNamespace"/>

      </rule>

      <rule pattern="^\.\.\.">

        <token type="NameNamespace"/>

      </rule>

      <rule pattern="[\n?]?\s*- ">

        <token type="Text"/>

      </rule>

      <rule pattern="#.*$">

        <token type="Comment"/>

      </rule>

      <rule pattern="!![^\s]+">

        <token type="CommentPreproc"/>

      </rule>

      <rule pattern="&amp;[^\s]+">

        <token type="CommentPreproc"/>

      </rule>

      <rule pattern="\*[^\s]+">

        <token type="CommentPreproc"/>

      </rule>

      <rule pattern="^%include\s+[^\n\r]+">

        <token type="CommentPreproc"/>

      </rule>

      <rule>

        <include state="key"/>

      </rule>

      <rule>

        <include state="value"/>

      </rule>

      <rule pattern="[?:,\[\]]">

        <token type="Punctuation"/>

      </rule>

      <rule pattern=".">

        <token type="Text"/>

      </rule>

    </state>

    <state name="value">

      <rule pattern="([&gt;|](?:[+-])?)(\n(^ {1,})(?:(?:.*\n*(?:^\3 *).*)+|.*))">

        <bygroups>

          <token type="Punctuation"/>

          <token type="LiteralStringDoc"/>

          <token type="TextWhitespace"/>

        </bygroups>

      </rule>

      <rule pattern="(false|False|FALSE|true|True|TRUE|null|Off|off|yes|Yes|YES|OFF|On|ON|no|No|on|NO|n|N|Y|y)\b">

        <token type="KeywordConstant"/>

      </rule>

      <rule pattern="&#34;(?:\\.|[^&#34;])*&#34;">

        <token type="LiteralStringDouble"/>

      </rule>

      <rule pattern="&#39;(?:\\.|[^&#39;])*&#39;">

        <token type="LiteralStringSingle"/>

      </rule>

      <rule pattern="\d\d\d\d-\d\d-\d\d([T ]\d\d:\d\d:\d\d(\.\d+)?(Z|\s+[-+]\d+)?)?">

        <token type="LiteralDate"/>

      </rule>

      <rule pattern="\b[+\-]?(0x[\da-f]+|0o[0-7]+|(\d+\.?\d*|\.?\d+)(e[\+\-]?\d+)?|\.inf|\.nan)\b">

        <token type="LiteralNumber"/>

      </rule>

      <rule pattern="([^\{\}\[\]\?,\:\!\-\*&amp;\@].*)( )+(#.*)">

        <bygroups>

          <token type="Literal"/>

          <token type="TextWhitespace"/>

          <token type="Comment"/>

        </bygroups>

      </rule>

      <rule pattern="[^\{\}\[\]\?,\:\!\-\*&amp;\@].*">

        <token type="Literal"/>

      </rule>

    </state>

    <state name="key">

      <rule pattern="&#34;[^&#34;\n].*&#34;: ">

        <token type="NameTag"/>

      </rule>

      <rule pattern="(-)( )([^&#34;\n{]*)(:)( )">

        <bygroups>

          <token type="Punctuation"/>

          <token type="TextWhitespace"/>

          <token type="NameTag"/>

          <token type="Punctuation"/>

          <token type="TextWhitespace"/>

        </bygroups>

      </rule>

      <rule pattern="([^&#34;\n{]*)(:)( )">

        <bygroups>

          <token type="NameTag"/>

          <token type="Punctuation"/>

          <token type="TextWhitespace"/>

        </bygroups>

      </rule>

      <rule pattern="([^&#34;\n{]*)(:)(\n)">

        <bygroups>

          <token type="NameTag"/>

          <token type="Punctuation"/>

          <token type="TextWhitespace"/>

        </bygroups>

      </rule>

    </state>

    <state name="whitespace">

      <rule pattern="\s+">

        <token type="TextWhitespace"/>

      </rule>

      <rule pattern="\n+">

        <token type="TextWhitespace"/>

      </rule>

    </state>

  </rules>

</lexer>