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

<project name="Build Script" default="test" basedir=".">

    <target name="clean">

        <delete dir="build"/>

    </target>

    <target name="compile" depends="build"/>

    <target name="build" depends="-libraries">

        <antcall target="-build-one">

            <param name="version" value="api1.0"/>

        </antcall>

        <antcall target="-build-one">

            <param name="version" value="api2.0"/>

        </antcall>

        <antcall target="-build-one">

            <param name="version" value="api3.0"/>

        </antcall>

        <antcall target="-build-one">

            <param name="version" value="test"/>

            <param name="cp" value="build/api1.0/classes:${junit.jar}"/>

        </antcall>

        <echo level="info" message="Next compilation will fails, as adding methods into interface is not binary compatible"/>

        <antcall target="-build-one">

            <param name="version" value="test"/>

            <param name="out" value="will-not-compile"/>

            <param name="cp" value="build/api2.0/classes:${junit.jar}"/>

            <param name="failonerror" value="false"/>

        </antcall>

        <antcall target="-build-one">

            <param name="version" value="test2.0"/>

            <param name="cp" value="build/api2.0/classes:build/test/classes:${junit.jar}"/>

        </antcall>

    </target>

    <target name="test" depends="build">

        <echo level="info" message="PrintVisitor on old API. This should succeeds."/>

        <antcall target="-run-one">

            <param name="version" value="api1.0"/>

        </antcall>

        <echo level="info" message="PrintVisitor on old API. This would not compile, but it runs as it does not deal with minus at all."/>

        <antcall target="-run-one">

            <param name="version" value="api2.0"/>

        </antcall>

        <echo level="info" message="PrintVisitor on new API. This yields runtime error."/>

        <antcall target="-run-one">

            <param name="test" value="test2.0"/>

            <param name="extra.cp" value="build/test/classes"/>

            <param name="version" value="api2.0"/>

        </antcall>

    </target>

    <!-- support methods -->

    <target name="-libraries">

        <ant dir="../../libs/"/>

        <property name="junit.jar" location="../../libs/dist/junit-4.4.jar"/>

    </target>

    <target name="-run-one">

        <fail message="You need to specify API version number" unless="version"/>

        <property name="test" value="test"/>

        <mkdir dir="build/${test}results${version}"/>

        <junit dir="build/test/classes" errorproperty="tests.failed" failureproperty="tests.failed" fork="true" showoutput="true">

            <batchtest todir="build/${test}results${version}">

                <fileset dir="build/${test}/classes">

                    <filename name="**/*Test.class"/>

                </fileset>

            </batchtest>

            <classpath>

                <path location="build/${version}/classes"/>

                <path location="build/${test}/classes"/>

                <path location="${junit.jar}"/>

                <path path="${extra.cp}"/>

            </classpath>

            <formatter type="brief" usefile="false"/>

            <formatter type="xml"/>

        </junit>

    </target>

    <target name="-build-one">

        <fail message="You need to specify version number" unless="version"/>

        <property name="cp" value=""/>

        <property name="out" value="${version}"/>

        <property name="failonerror" value="true"/>

        <mkdir dir="build/${out}/classes"/>

        <javac 

            srcdir="src-${version}" 

            destdir="build/${out}/classes" 

            source="1.5" target="1.5"

            classpath="${cp}"

            failonerror="${failonerror}"

        />

    </target>

</project>