//  A Gant script for building the Groovy system.
//
//  Copyright © 2006 Russel Winder <russel@russel.org.uk>
//
//  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
//  compliance with the License. You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software distributed under the License is
//  distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
//  implied. See the License for the specific language governing permissions and limitations under the
//  License.
//
//  Author : Russel Winder
//  $Revision$
//  $Date$

sourceDirectory = 'src'
mainSourceDirectory = sourceDirectory + '/main'
testsSourceDirectory = sourceDirectory + '/test'
targetDirectory = 'target'
mainClassesDirectory = targetDirectory + '/classes'
testsClassesDirectory = targetDirectory + '/test-classes'
reportsDirectory = targetDirectory + '/test-reports'

antlrDirectory = mainSourceDirectory +  '/org/codehaus/groovy/antlr'
parserDirectory = antlrDirectory + '/parser'

javaVersion = '1.4'

includeTargets << gant.targets.Clean
cleanDirectory << targetDirectory
cleanPattern << [ '**.*~' , parserDirectory + '/Groovy*.*' ]

dependencies = 'dependencies'
Ant.path ( id : dependencies ) {
  fileset ( dir : System.properties.'groovy.home' + '/lib' , includes : '*.jar' , excludes : 'gant*.jar,*groovy*.jar' )
}

Ant.taskdef ( name : 'groovyc' , classname : 'org.codehaus.groovy.ant.Groovyc' , classpath : mainClassesDirectory )

task ( ensureAntlr : 'Ensure all the files generated from the Antlr grammar are up to date.' ) {
  Ant.mkdir ( dir : parserDirectory )
  //  Need a way of getting this path in a platform independent way.  This is fine fo Ubuntu (and Debian?) but likely fails for all other OSs.
  def antAntlrJar = '/usr/share/java/ant-antlr.jar'
  Ant.taskdef ( name : 'antlr' , classname : 'org.apache.tools.ant.taskdefs.optional.ANTLR' , classpath : antAntlrJar )
  Ant.antlr ( target : antlrDirectory + '/groovy.g' , outputdirectory : parserDirectory ) {
    classpath ( refid : dependencies )
  }    
}

task ( compileMain : 'Compile the Java and Groovy code in the main source.' ) {
  depends ( ensureAntlr )
  Ant.mkdir ( dir : mainClassesDirectory )
  Ant.javac ( srcdir : mainSourceDirectory , destdir : mainClassesDirectory , debug : 'yes' , source : javaVersion , target : javaVersion , classpathref : dependencies , fork : 'true' )
  Ant.groovyc ( srcdir : mainSourceDirectory , destdir : mainClassesDirectory ) { // , fork : 'true' ) {
    classpath {
      pathelement ( location : mainClassesDirectory )
      path ( refid : dependencies )
    }
  } 
}

task ( compileTest : 'Compile the Java and Groovy code in the test source.' ) {
  depends ( compileMain )
  Ant.mkdir ( dir : testsClassesDirectory )
  Ant.javac ( srcdir : testsSourceDirectory , destdir : testsClassesDirectory , debug : 'yes' , source : javaVersion , target : javaVersion , excludes : 'UberTestCase*.java' , fork : 'true' ) {
    classpath {
      pathelement ( location : mainClassesDirectory )
      path ( refid : dependencies )
    }
  }
  /*
   *  Compiling the tests appears to require 128M of heap space.  Since the Groovy compiler Ant task doesn't
   *  yet understand the fork and maxmemory attributes, we have to do things a bit more explicitly so as to
   *  avoid having to use JAVA_OPTS=-Xmx128M gant on the command line.
   * 
  Ant.groovyc ( srcdir : testsSourceDirectory , destdir : testsClassesDirectory ) { // , fork : 'true', maxmemory : '128M'  ) {
    classpath {
      pathelement ( location : mainClassesDirectory )
      pathelement ( location : testsClassesDirectory )
      path ( refid : dependencies )
    }
  }
  */
  Ant.java ( classname : 'org.codehaus.groovy.ant.Groovyc' , fork : 'yes' , maxmemory : '128M' ) {
    arg ( value : testsClassesDirectory )
    arg ( value : testsSourceDirectory )
    classpath {
      pathelement ( location : mainClassesDirectory )
      pathelement ( location : testsClassesDirectory )
      path ( refid : dependencies )
    }
  }
  Ant.javac ( srcdir : testsSourceDirectory , destdir : testsClassesDirectory , debug : 'yes' , source : javaVersion , target : javaVersion , includes : 'UberTestCase*.java' , fork : 'true' ) {
    classpath {
      pathelement ( location : mainClassesDirectory )
      pathelement ( location : testsClassesDirectory )
      path ( refid : dependencies )
    }
  }
}

task ( test : 'Test a build.' ) {
  depends ( compileTest )
  Ant.mkdir ( dir : reportsDirectory )
  Ant.junit ( printsummary : 'true' , fork : 'true' , forkmode : 'once' ) {
    formatter ( type : 'plain' )
    batchtest ( todir : reportsDirectory ) {
      fileset ( dir : testsClassesDirectory , includes : 'UberTest*.class' )
    }
    classpath {
      pathelement ( location : mainClassesDirectory )
      pathelement ( location : testsClassesDirectory )
      path ( refid : dependencies )
    }
  }
}

task ( 'default' : 'Default action is currently test.' ) { test ( ) }