build-macros.xml

<?xml version="1.0" encoding="utf-8" ?>
<!--
 ! Excerpted from "Language Implementation Patterns",
 ! published by The Pragmatic Bookshelf.
 ! Copyrights apply to this code. It may not be used to create training material, 
 ! courses, books, articles, and the like. Contact us if you are in doubt.
 ! We make no guarantees that this code is fit for any purpose. 
 ! Visit http://www.pragmaticprogrammer.com/titles/tpdsl for more book information.
-->
<project name="build-macros" basedir=".">

    <!-- Looks weird but correct, as it runs from our subdirs, this allows the ant build to function from every subdirectory -->
  <path id="libs.all">
    <fileset dir="../../" includes="*.jar"  /> 
  </path>

    <!-- Creates output directories for classes -->
  <macrodef name="init">
    <sequential>
      <mkdir dir="${build.dir}" />
      <mkdir dir="${classes.dir}" />
    </sequential>
  </macrodef>



		<!-- Clean macro we use for all sub-projects, deletes build dir. -->
  <macrodef name="clean">
    <sequential>
      <delete dir="${build.dir}" failonerror="false" includes="*.class" />
    </sequential>
  </macrodef>

  <macrodef name="generate">
    <sequential>
      <pathconvert pathsep=" " dirsep="/" property="grammars">
        <path id="test">
          <fileset dir="${src.dir}" includes="*.g" />
        </path>
      </pathconvert>
      
      <echo message="Grammars: ${grammars}" />
      
      <java classname="org.antlr.Tool" classpathref="libs.all" fork="true">
        <arg line="-o ${src.dir} ${grammars}" />
        <!--
        <arg value="-o" />
        <arg value="${src.dir}"  />
        <arg value="${grammars}" />
        -->
      </java>

    </sequential>
  </macrodef>

    <!-- Compile macro we use for all sub-projects, it may optionally have another classpathrefid parameter if libraries need to be changed for a project -->
  <macrodef name="compile">
    <attribute name="cprefid" default="libs.all" />
    <sequential>
        <!-- The libraries, for convenience we just import them into one path, the weird ../ assures we can run it from any directory where there is a build.xml -->

      <javac destdir="${classes.dir}" target="1.5">
        <classpath refid="@{cprefid}" />
        <src location="${src.dir}" />
      </javac>
    </sequential>
  </macrodef>

    <!-- Macro to run a class, in our case it runs a test. Default class that runs is 'Test', can be changed. -->
  <macrodef name="run">
    <attribute name="class" default="Test" />
    <attribute name="argline" default="" />
    <attribute name="cprefid" default="libs.all" />
    <sequential>
        <!-- The libraries, for convenience we just import them into one path, the weird ../ assures we can run it from any directory where there is a build.xml -->

      <java classname="@{class}" fork="true">
        <classpath refid="@{cprefid}" />
        <classpath location="${classes.dir}" />
        <arg line="@{argline}" />
      </java>
    </sequential>
  </macrodef>

  <macrodef name="run-single">
    <attribute name="class" default="${class}" />
    <attribute name="argline" default="${file}" />
    <attribute name="cprefid" default="libs.all" />

    <sequential>
        <!-- The libraries, for convenience we just import them into one path, the weird ../ assures we can run it from any directory where there is a build.xml -->

      <java classname="@{class}" fork="true">
        <classpath refid="@{cprefid}" />
        <classpath location="${classes.dir}" />
        <arg line="@{argline}" />
      </java>
    </sequential>
  </macrodef>
</project>