a demo Project type

multi-project incremental compilation
 and dependency management
'update' currently runs on every compile
built-in 'compile' command shadows 'compile' action

main/DefaultProject.scala

@@ -0,0 +1,63 @@
+/* sbt -- Simple Build Tool
+ * Copyright 2010  Mark Harrah
+ */
+package sbt
+
+	import std._
+	import inc.Analysis
+	import TaskExtra._
+	import Configurations.{Compile => CompileConfig, Test => TestConfig}
+	import ClasspathProject._
+	
+	import java.io.File
+
+abstract class DefaultProject extends TestProject with MultiClasspathProject with ReflectiveClasspathProject
+{
+	def javacOptions: Seq[String] = Nil
+	def scalacOptions: Seq[String] = Nil
+
+	def outputDirectory = "target": Path
+	def cacheDirectory = outputDirectory / "cache"
+
+	def classesDirectory(configuration: Configuration): File =
+		configuration match {
+			case CompileConfig => outputDirectory / "classes"
+			case x => outputDirectory / (x.toString + "-classes")
+		}
+
+	 // TODO: resources, jars, test classes
+	lazy val products: Classpath =
+		TaskMap { (conf: Configuration) =>
+			conf match {
+				case CompileConfig => analyzed(compile, compileInputs) named(name + "/analyzed") map { _ :: Nil } named(name + "/products")
+				case x => error("Unknown compilation configuration: " + x)
+			}
+		}
+
+	def sourceFilter: FileFilter = "*.java" | "*.scala"
+
+	def compileTask(inputs: Task[Compile.Inputs]): Task[Analysis] = inputs map Compile.apply
+
+	def compileInputsTask(configuration: Configuration, base: PathFinder): Task[Compile.Inputs] =
+	{
+		val dep = dependencyClasspath(configuration)
+		val prod: Task[Seq[Attributed[File]]] = (configuration.extendsConfigs map products).join.map(_.flatten)
+		(dep, prod) map { case (cp :+: prodcp :+: HNil) =>
+			val log = ConsoleLogger()
+			val compilers = Compile.compilers(info.configuration, log)
+			val javaSrc = base / "java"
+			val scalaSrc = base / "scala"
+			val out = "target" / compilers.scalac.scalaInstance.actualVersion
+
+			val sources = ((javaSrc +++ scalaSrc) ** sourceFilter) +++ (if(configuration == Compile) (".": Path) * sourceFilter else Path.emptyPathFinder)
+			println("Sources: " + sources)
+			val classes = classesDirectory(configuration)
+			val classpath = (classes +: data(prodcp)) ++ data(cp)
+			val analysis = analysisMap(prodcp ++ cp)
+			Compile.inputs(classpath, sources.getFiles.toSeq, classes, scalacOptions, javacOptions, javaSrc.getFiles.toSeq, analysis, cacheDirectory, 100)(compilers, log)
+		}
+	}
+
+	lazy val compileInputs: Task[Compile.Inputs] = compileInputsTask(Configurations.Compile,  "src" / "main") named(name + "/compile-inputs")
+	lazy val compile: Task[Analysis] = compileTask(compileInputs) named(name + "/compile")
+}