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Current File : //usr/share/gtksourceview-5/language-specs/abnf.lang

<?xml version="1.0" encoding="UTF-8"?>
<!--

 This file is part of GtkSourceView

 Author: Philip Withnall <philip@tecnocode.co.uk>
 Copyright (C) 2016 Philip Withnall <philip@tecnocode.co.uk>

 GtkSourceView is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 GtkSourceView is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public License
 along with this library; if not, see <http://www.gnu.org/licenses/>.

-->

<!--
References:
	https://en.wikipedia.org/wiki/Augmented_Backus%E2%80%93Naur_form
	https://tools.ietf.org/html/rfc5234
	https://tools.ietf.org/html/rfc7405
-->
<language id="abnf" name="ABNF" version="2.0" _section="Source">
  <metadata>
    <property name="globs">*.abnf</property>
    <property name="line-comment-start">;</property>
  </metadata>

  <styles>
    <style id="comment"     name="Comment"            map-to="def:comment"/>
    <style id="rulename"    name="Rule Name"          map-to="def:type"/>
    <style id="binary"      name="Binary number"      map-to="def:base-n-integer"/>
    <style id="decimal"     name="Decimal number"     map-to="def:decimal"/>
    <style id="hexadecimal" name="Hexadecimal number" map-to="def:base-n-integer"/>
    <style id="string"      name="String"             map-to="def:string"/>
  </styles>

  <definitions>
    <define-regex id="rulename">([a-zA-Z][a-zA-Z0-9-]*|&lt;[a-zA-Z][a-zA-Z0-9-]*&gt;)</define-regex>

    <context id="line-comment" style-ref="comment" end-at-line-end="true" class="comment" class-disabled="no-spell-check">
      <start>;</start>
      <include>
        <context ref="def:in-line-comment"/>
      </include>
    </context>

    <context id="rulename">
      <match>(\%{rulename})</match>
      <include>
        <context sub-pattern="1" style-ref="rulename"/>
      </include>
    </context>

    <context id="terminal-binary" style-ref="binary">
      <match>%b[0-1]+(\-[0-1]+|(\.[0-1]+)*)</match>
    </context>

    <context id="terminal-decimal" style-ref="decimal">
      <match>%d[0-9]+(\-[0-9]+|(\.[0-9]+)*)</match>
    </context>

    <context id="terminal-hexadecimal" style-ref="hexadecimal">
      <match>%x[0-9a-fA-F]+(\-[0-9a-fA-F]+|(\.[0-9a-fA-F]+)*)</match>
    </context>

    <context id="terminal-string" style-ref="string">
      <match>"[ !#$%&amp;'\(\)\*\+,\-\./0-9:;&lt;=&gt;\?@A-Z\[\\\]\^_`a-z\{\|\}~]*"</match>
    </context>

    <context id="terminal">
      <include>
        <context ref="terminal-binary"/>
        <context ref="terminal-decimal"/>
        <context ref="terminal-hexadecimal"/>
        <context ref="terminal-string"/>
      </include>
    </context>

    <context id="element">
      <include>
        <context ref="rulename"/>
        <context ref="terminal"/>
      </include>
    </context>

    <context id="abnf">
      <include>
        <context ref="line-comment"/>
        <context id="rule">
          <start>^\s*(\%{rulename})\s*=/?</start>
          <end>^(?!\s)</end>
          <include>
            <context sub-pattern="1" where="start" style-ref="rulename"/>
            <context ref="element"/>
            <context ref="line-comment"/>
          </include>
        </context>
      </include>
    </context>
  </definitions>
</language>

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