buildLexer.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<project name="AsciiDoc Lexer" default="asciidoc">
  <property name="flex.jar.path" value="${idea.community.source.home}/tools/lexer/jflex-1.7.0-SNAPSHOT.jar"/>

  <macrodef name="flex">
    <attribute name="flexfile"/>
    <attribute name="destdir"/>
    <attribute name="skeleton" default="${idea.community.source.home}/tools/lexer/idea-flex.skeleton"/>
    <sequential>
      <java jar="${flex.jar.path}"
            fork="true"
            failonerror="true">
        <jvmarg value="-Xmx512M"/>
        <arg value="-skel"/>
        <arg value="@{skeleton}"/>
        <arg value="-d"/>
        <arg value="@{destdir}"/>
        <arg value="-legacydot"/>
        <arg value="@{flexfile}"/>
      </java>
    </sequential>
  </macrodef>

  <target name="asciidoc">
    <flex destdir="${basedir}/src/main/java/org/asciidoc/intellij/lexer"
          flexfile="${basedir}/src/main/java/org/asciidoc/intellij/lexer/asciidoc.flex"/>
  </target>
</project>