<project name="Cofoja" default="dist" basedir="."
         xmlns:if="ant:if"
         xmlns:unless="ant:unless"
         xmlns:ivy="antlib:org.apache.ivy.ant">
  <!-- Configurable properties. -->
  <condition property="platform.suffix" value=".${platform}" else="">
    <isset property="platform" />
  </condition>
  <property file="local.properties" />
  <property file="local${platform.suffix}.properties" if:set="platform" />
  <property file="default.properties" />

  <!-- Private properties. -->

  <condition property="java8">
    <or>
      <and>
        <isset property="rt.jar" />
        <available ignoresystemclasses="true"
                   classname="java.lang.invoke.LambdaMetafactory">
          <classpath location="${rt.jar}" />
        </available>
      </and>
      <and>
        <not>
          <isset property="rt.jar" />
        </not>
        <available classname="java.lang.invoke.LambdaMetafactory" />
      </and>
    </or>
  </condition>

  <property name="lib.dir" location="lib" />
  <property name="src.dir" location="src" />
  <property name="test.dir" location="test" />
  <property name="build.dir" location="build" />
  <property name="obj.dir" location="obj${platform.suffix}" />
  <property name="dist.dir" location="dist${platform.suffix}" />

  <property name="manifest.path"
            value="${src.dir}/META-INF/MANIFEST.MF" />
  <property name="apt.class"
            value="com.google.java.contract.core.apt.AnnotationProcessor" />
  <property name="test.configurator.class"
            value="com.google.java.contract.tests.Cofoja" />

  <path id="base.class.path">
    <fileset dir="${lib.dir}">
      <include name="asm-*.jar" />
    </fileset>
  </path>

  <path id="build.class.path">
    <path refid="base.class.path" />
    <pathelement path="${tools.jar}" />
  </path>

  <path id="test.class.path">
    <path refid="base.class.path" />
    <fileset dir="${lib.dir}">
      <include name="*.jar" />
    </fileset>
  </path>

  <path id="test1.class.path">
    <path refid="test.class.path" />
    <pathelement path="${obj.dir}/stage2" />
  </path>

  <path id="test2.class.path">
    <path refid="test.class.path" />
    <pathelement path="${obj.dir}/stage2" />
    <pathelement path="${obj.dir}/test" />
  </path>

  <!-- Build macros. -->

  <presetdef name="ujavac">
    <javac encoding="utf-8" debug="${debug}" includeantruntime="false">
      <bootclasspath location="${rt.jar}" if:set="rt.jar" />
    </javac>
  </presetdef>

  <macrodef name="cofojavac">
    <attribute name="srcdir" />
    <attribute name="destdir" />
    <attribute name="debug" default="false" />
    <attribute name="bootstrappath" default="" />
    <attribute name="classpathid" />
    <element name="contents" optional="true" implicit="true" />
    <sequential>
      <path id="processor.path">
        <path refid="base.class.path" />
        <pathelement location="@{bootstrappath}" />
      </path>
      <ujavac srcdir="@{srcdir}" destdir="@{destdir}" debug="@{debug}">
        <classpath refid="@{classpathid}" />
        <compilerarg value="-processorpath" unless:blank="@{bootstrappath}" />
        <compilerarg value="${toString:processor.path}" unless:blank="@{bootstrappath}" />
        <compilerarg value="-processor" />
        <compilerarg value="${apt.class}" />
        <compilerarg value="-Acom.google.java.contract.classpath=${toString:@{classpathid}}" />
        <compilerarg value="-Acom.google.java.contract.sourcepath=@{srcdir}" />
        <compilerarg value="-Acom.google.java.contract.classoutput=@{destdir}" />
        <contents />
      </ujavac>
    </sequential>
  </macrodef>

  <macrodef name="checkjar">
    <attribute name="label" />
    <attribute name="property" />
    <sequential>
      <condition property="@{property}.notfound"
                 value="no such file: "
                 else="">
        <not>
          <available file="${@{property}}" />
        </not>
      </condition>
      <echo message="@{label}${@{property}.notfound}${@{property}}" />
    </sequential>
  </macrodef>

  <macrodef name="requirejar">
    <attribute name="property" />
    <sequential>
      <fail message="Cannot find '${@{property}}'. Please link to the appropriate file or set the '@{property}' property to suit your environment. Consult the 'README' file for more information.">
        <condition>
          <not>
            <equals arg1="${@{property}.notfound}" arg2="" />
          </not>
        </condition>
      </fail>
    </sequential>
  </macrodef>

  <macrodef name="barejar">
    <attribute name="jarfile" />
    <attribute name="basedir" />
    <sequential>
      <jar jarfile="@{jarfile}"
           basedir="@{basedir}"
           manifest="${manifest.path}">
        <service type="javax.annotation.processing.Processor"
                 provider="${apt.class}" />
      </jar>
    </sequential>
  </macrodef>

  <macrodef name="fulljar">
    <attribute name="jarfile" />
    <attribute name="barejarfile" />
    <sequential>
      <jar jarfile="@{jarfile}"
           manifest="${manifest.path}">
        <service type="javax.annotation.processing.Processor"
                 provider="${apt.class}" />
        <zipfileset includes="**/*.class"
                    src="@{barejarfile}" />
        <zipfileset includes="**/*.class">
          <fileset dir="${lib.dir}">
            <include name="asm-*.jar" />
          </fileset>
        </zipfileset>
      </jar>
    </sequential>
  </macrodef>

  <macrodef name="bootstrapcomp">
    <attribute name="stage" />
    <attribute name="bootstrappath" />
    <sequential>
      <mkdir dir="${obj.dir}/tmp@{stage}" />
      <mkdir dir="${obj.dir}/stage@{stage}" />
      <cofojavac srcdir="${src.dir}" destdir="${obj.dir}/tmp@{stage}" debug="true"
                 bootstrappath="@{bootstrappath}" classpathid="build.class.path" />
      <cofojab srcdir="${obj.dir}/tmp@{stage}"
               destdir="${obj.dir}/stage@{stage}" />
    </sequential>
  </macrodef>

  <!-- Dependency management. -->

  <target name="resolve" description="retrieve dependencies with Ivy">
    <ivy:retrieve pattern="${lib.dir}/[artifact]-[revision].[ext]"
                  type="jar" conf="test" />
  </target>

  <target name="publish" depends="resolve,dist"
          description="publish artifacts with Ivy">
    <ivy:publish resolver="local" pubrevision="${version}"
                 artifactspattern="dist/[artifact]-${cofoja.version}.[ext]" />
  </target>

  <!-- Initialization. -->

  <target name="configure">
    <echo message="Configuration" />
    <echo message="-------------" />
    <sequential if:set="rt.jar">
      <checkjar label="JRE RT JAR:    " property="rt.jar" />
    </sequential>
    <checkjar label="JDK Tools JAR: " property="tools.jar" />
    <sequential if:set="bootstrap.jar">
      <checkjar label="Bootstrap JAR: " property="bootstrap.jar" />
    </sequential>
    <echo message="Snapshot:      ${snapshot}" />
    <echo message="Debug:         ${debug}" />
  </target>

  <target name="init" depends="configure">
    <requirejar property="tools.jar" />

    <tstamp />
    <condition property="cofoja.version"
               value="${version}-${DSTAMP}"
               else="${version}">
      <equals arg1="${snapshot}" arg2="true" />
    </condition>
    <property name="cofoja.jar"
              value="${dist.dir}/cofoja+asm-${cofoja.version}.jar" />
    <property name="cofoja.bare.jar"
              value="${dist.dir}/cofoja-${cofoja.version}.jar" />
    <property name="cofoja.contracted.jar"
              value="${dist.dir}/cofoja+contracts+asm-${cofoja.version}.jar" />
    <property name="cofoja.contracted.bare.jar"
              value="${dist.dir}/cofoja+contracts-${cofoja.version}.jar" />

    <mkdir dir="${obj.dir}" />
    <mkdir dir="${dist.dir}" />
  </target>

  <!-- Simple build. -->

  <target name="build" depends="init"
          description="build class files">
    <mkdir dir="${obj.dir}/bare" />
    <ujavac srcdir="${src.dir}" destdir="${obj.dir}/bare">
      <classpath refid="build.class.path" />
    </ujavac>
  </target>

  <target name="nobootstrap" depends="build"
          description="build JAR files without self-contracts">
    <barejar jarfile="${cofoja.bare.jar}" basedir="${obj.dir}/bare" />
    <fulljar jarfile="${cofoja.jar}" barejarfile="${cofoja.bare.jar}" />
    <property name="bootstrap.jar" value="${cofoja.bare.jar}" />
  </target>

  <!-- Bootstrap. -->

  <target name="antinit" depends="init,nobootstrap">
    <mkdir dir="${obj.dir}/build" />
    <ujavac srcdir="${build.dir}" destdir="${obj.dir}/build">
      <classpath>
        <path refid="base.class.path" />
        <pathelement path="${java.class.path}" />
        <pathelement location="${bootstrap.jar}" />
      </classpath>
    </ujavac>
    <taskdef name="cofojab" classname="PreAgentAntTask">
      <classpath>
        <path refid="base.class.path" />
        <pathelement location="${obj.dir}/build" />
        <pathelement location="${bootstrap.jar}" />
      </classpath>
    </taskdef>
  </target>

  <target name="stage0" depends="antinit">
    <bootstrapcomp stage="0" bootstrappath="${bootstrap.jar}" />
  </target>

  <target name="stage1" depends="stage0">
    <bootstrapcomp stage="1" bootstrappath="${obj.dir}/stage0" />
  </target>

  <target name="stage2" depends="stage1">
    <bootstrapcomp stage="2" bootstrappath="${obj.dir}/stage1" />
  </target>

  <target name="dist" depends="stage2"
          description="build JAR files for distribution">
    <barejar jarfile="${cofoja.contracted.bare.jar}"
             basedir="${obj.dir}/stage2" />
    <fulljar jarfile="${cofoja.contracted.jar}"
             barejarfile="${cofoja.contracted.bare.jar}" />
  </target>

  <!-- Tests. -->

  <target name="buildtest1" depends="stage2">
    <mkdir dir="${obj.dir}/test" />
    <cofojavac srcdir="${test.dir}" destdir="${obj.dir}/test"
               classpathid="test1.class.path">
      <include name="**/SeparateGenericSuperclass.java" />
      <include name="**/SeparateInterface.java" />
    </cofojavac>
  </target>

  <target name="buildtest2" depends="buildtest1,stage2">
    <cofojavac srcdir="${test.dir}" destdir="${obj.dir}/test"
               classpathid="test2.class.path">
      <compilerarg value="-Acom.google.java.contract.dump=${obj.dir}/test/dump" />
      <exclude name="**/SeparateGenericSuperclass.java" />
      <exclude name="**/SeparateInterface.java" />
      <exclude name="**/Java8*.java" unless:true="${java8}" />
    </cofojavac>
  </target>

  <target name="test" depends="buildtest2,dist"
          description="run tests">
    <junit printsummary="yes" haltonfailure="yes">
      <classpath>
        <path refid="test.class.path" />
        <pathelement path="${obj.dir}/stage2" />
        <pathelement location="${obj.dir}/test" />
      </classpath>
      <jvmarg value="-javaagent:${cofoja.contracted.bare.jar}" />
      <jvmarg value="-Dcom.google.java.contract.configurator=${test.configurator.class}" />
      <formatter type="plain" />
      <batchtest fork="yes" todir="${obj.dir}/test">
        <fileset dir="${obj.dir}/test">
          <include name="**/*Test.class" />
          <exclude name="**/Java8*.class" unless:true="${java8}" />
        </fileset>
      </batchtest>
    </junit>
  </target>

  <!-- Book-keeping. -->

  <target name="clean"
          description="remove generated files">
    <delete dir="${obj.dir}" />
    <delete dir="${dist.dir}" />
  </target>
</project>