Rework external dependency tracking and multi-projects

Reduce AnalysisCallback interface:
  remove discovery
  simplify dependency notification methods
Use map of classpath entry to Analysis for locating
  source API for external dependencies
Handle classpath changes by locating class
  on classpath and either locating Analysis/Source
  as above or comparing Stamp.  This requires storing
  the class name of a binary dependency now.
Make this process aware of full classpath, including
  boot classpath

compile/inc/Analysis.scala

@@ -18,7 +18,7 @@ trait Analysis
 	def copy(stamps: Stamps = stamps, apis: APIs = apis, relations: Relations = relations): Analysis
 	
 	def addSource(src: File, api: Source, stamp: Stamp, internalDeps: Iterable[File]): Analysis
-	def addBinaryDep(src: File, dep: File, stamp: Stamp): Analysis
+	def addBinaryDep(src: File, dep: File, className: String, stamp: Stamp): Analysis
 	def addExternalDep(src: File, dep: String, api: Source): Analysis
 	def addProduct(src: File, product: File, stamp: Stamp): Analysis 
 }
@@ -44,8 +44,8 @@ private class MAnalysis(val stamps: Stamps, val apis: APIs, val relations: Relat
 	def addSource(src: File, api: Source, stamp: Stamp, internalDeps: Iterable[File]): Analysis =
 		copy( stamps.markInternalSource(src, stamp), apis.markInternalSource(src, api), relations.addInternalSrcDeps(src, internalDeps) )
 
-	def addBinaryDep(src: File, dep: File, stamp: Stamp): Analysis =
+	def addBinaryDep(src: File, dep: File, className: String, stamp: Stamp): Analysis =
-		copy( stamps.markBinary(dep, stamp), apis, relations.addBinaryDep(src, dep) )
+		copy( stamps.markBinary(dep, className, stamp), apis, relations.addBinaryDep(src, dep) )
 
 	def addExternalDep(src: File, dep: String, depAPI: Source): Analysis =
 		copy( stamps, apis.markExternalAPI(dep, depAPI), relations.addExternalDep(src, dep) )

compile/inc/Compile.scala

@@ -9,42 +9,74 @@ import java.io.File
 
 object IncrementalCompile
 {
-	def apply(sources: Set[File], compile: (Set[File], xsbti.AnalysisCallback) => Unit, previous: Analysis, externalAPI: String => Source): Analysis =
+	def apply(sources: Set[File], entry: String => Option[File], compile: (Set[File], xsbti.AnalysisCallback) => Unit, previous: Analysis, forEntry: File => Option[Analysis], outputPath: File): Analysis =
 	{
 		val current = Stamps.initial(Stamp.exists, Stamp.hash, Stamp.lastModified)
 		val internalMap = (f: File) => previous.relations.produced(f).headOption
-		Incremental.compile(sources, previous, current, externalAPI, doCompile(compile, internalMap, current))
+		val externalAPI = getExternalAPI(entry, forEntry)
+		Incremental.compile(sources, entry, previous, current, forEntry, doCompile(compile, internalMap, externalAPI, current, outputPath))
 	}
-	def doCompile(compile: (Set[File], xsbti.AnalysisCallback) => Unit, internalMap: File => Option[File], current: ReadStamps) = (srcs: Set[File]) => {
+	def doCompile(compile: (Set[File], xsbti.AnalysisCallback) => Unit, internalMap: File => Option[File], externalAPI: (File, String) => Option[Source], current: ReadStamps, outputPath: File) = (srcs: Set[File]) => {
-		val callback = new AnalysisCallback(internalMap, current)
+		val callback = new AnalysisCallback(internalMap, externalAPI, current, outputPath)
 		compile(srcs, callback)
 		callback.get 
 	}
+	def getExternalAPI(entry: String => Option[File], forEntry: File => Option[Analysis]): (File, String) => Option[Source] =
+	 (file: File,className: String) =>
+			entry(className) flatMap { defines =>
+				if(file != Locate.resolve(defines, className) )
+					None
+				else
+					forEntry(defines) flatMap { analysis =>
+						analysis.relations.produced(file).headOption flatMap { src =>
+							analysis.apis.internal get src
+						}
+					}
+			}
 }
-private final class AnalysisCallback(internalMap: File => Option[File], current: ReadStamps) extends xsbti.AnalysisCallback
+private final class AnalysisCallback(internalMap: File => Option[File], externalAPI: (File, String) => Option[Source], current: ReadStamps, outputPath: File) extends xsbti.AnalysisCallback
 {
 	override def toString = ( List("APIs", "Binary deps", "Products", "Source deps") zip List(apis, binaryDeps, classes, sourceDeps)).map { case (label, map) => label + "\n\t" + map.mkString("\n\t") }.mkString("\n")
 	
-	import collection.mutable.{HashMap, HashSet, Map, Set}
+	import collection.mutable.{HashMap, HashSet, ListBuffer, Map, Set}
 	
 	private val apis = new HashMap[File, Source]
 	private val binaryDeps = new HashMap[File, Set[File]]
 	private val classes = new HashMap[File, Set[File]]
 	private val sourceDeps = new HashMap[File, Set[File]]
+	private val extSrcDeps = new ListBuffer[(File, String, Source)]
+	private val binaryClassName = new HashMap[File, String]
 
 	private def add[A,B](map: Map[A,Set[B]], a: A, b: B): Unit =
 		map.getOrElseUpdate(a, new HashSet[B]) += b
 
-	def sourceDependency(dependsOn: File, source: File) = add(sourceDeps, source, dependsOn)
+	def sourceDependency(dependsOn: File, source: File) = if(source != dependsOn) add(sourceDeps, source, dependsOn)
+	def externalBinaryDependency(binary: File, className: String, source: File)
+	{
+		binaryClassName.put(binary, className)
+		add(binaryDeps, source, binary)
+	}
+	def externalSourceDependency(triple: (File, String, Source)) =  extSrcDeps += triple
 
-	def jarDependency(jar: File, source: File) = add(binaryDeps, source, jar)
+	def binaryDependency(classFile: File, name: String, source: File) =
-	def classDependency(clazz: File, source: File) = add(binaryDeps, source, clazz)
+	{
-	
+		internalMap(classFile) match
-	def productDependency(classFile: File, sourcePath: File) =
+		{
-		internalMap(classFile) match {
+			case Some(dependsOn) =>
-			case Some(dependsOn) => sourceDependency(dependsOn, sourcePath)
+				 // dependency is a product of a source not included in this compilation
-			case None => classDependency(classFile, sourcePath)
+				sourceDependency(dependsOn, source)
+			case None =>
+				externalAPI(classFile, name) match
+				{
+					case Some(api) =>
+						// dependency is a product of a source in another project
+						externalSourceDependency( (source, name, api) )
+					case None =>
+						// dependency is some other binary on the classpath
+						externalBinaryDependency(classFile, name, source)
+				}
 		}
+	}
 		
 	def generatedClass(source: File, module: File) = add(classes, source, module)
 	
@@ -52,13 +84,14 @@ private final class AnalysisCallback(internalMap: File => Option[File], current:
 	def endSource(sourcePath: File): Unit =
 		assert(apis.contains(sourcePath))
 	
-	def get: Analysis = addBinaries( addProducts( addSources(Analysis.Empty) ) )
+	def get: Analysis = addExternals( addBinaries( addProducts( addSources(Analysis.Empty) ) ) )
 	def addProducts(base: Analysis): Analysis = addAll(base, classes)( (a, src, prod) => a.addProduct(src, prod, current product prod ) )
-	def addBinaries(base: Analysis): Analysis = addAll(base, binaryDeps)( (a, src, bin) => a.addBinaryDep(src, bin, current binary bin) )
+	def addBinaries(base: Analysis): Analysis = addAll(base, binaryDeps)( (a, src, bin) => a.addBinaryDep(src, bin, binaryClassName(bin), current binary bin) )
 	def addSources(base: Analysis): Analysis =
 		(base /: apis) { case (a, (src, api) ) =>
 			a.addSource(src, api, current.internalSource(src), sourceDeps.getOrElse(src, Nil: Iterable[File]))
 		}
+	def addExternals(base: Analysis): Analysis = (base /: extSrcDeps) { case (a, (source, name, api)) => a.addExternalDep(source, name, api) }
 		
 	def addAll[A,B](base: Analysis, m: Map[A, Set[B]])( f: (Analysis, A, B) => Analysis): Analysis =
 		(base /: m) { case (outer, (a, bs)) =>
@@ -66,12 +99,5 @@ private final class AnalysisCallback(internalMap: File => Option[File], current:
 				f(inner, a, b)
 		} }
 
-	private def emptyS = new Array[String](0)
-	def superclassNames = emptyS
-	def annotationNames = emptyS
-	def superclassNotFound(superclassName: String) {}
-	def foundSubclass(source: File, subclassName: String, superclassName: String, isModule: Boolean) {}
-	def foundAnnotated(source: File, className: String, annotationName: String, isModule: Boolean) {}
-	def foundApplication(source: File, className: String) {}
 	def beginSource(source: File) {}
 }

compile/inc/Incremental.scala

@@ -12,9 +12,9 @@ import java.io.File
 object Incremental
 {
 	def println(s: String) = if(java.lang.Boolean.getBoolean("xsbt.inc.debug")) System.out.println(s) else ()
-	def compile(sources: Set[File], previous: Analysis, current: ReadStamps, externalAPI: String => Source, doCompile: Set[File] => Analysis)(implicit equivS: Equiv[Stamp]): Analysis =
+	def compile(sources: Set[File], entry: String => Option[File], previous: Analysis, current: ReadStamps, forEntry: File => Option[Analysis], doCompile: Set[File] => Analysis)(implicit equivS: Equiv[Stamp]): Analysis =
 	{
-		val initialChanges = changedInitial(sources, previous.stamps, previous.apis, current, externalAPI)
+		val initialChanges = changedInitial(entry, sources, previous, current, forEntry)
 		val initialInv = invalidateInitial(previous.relations, initialChanges)
 		println("Initially invalidated: " + initialInv)
 		cycle(initialInv, previous, doCompile)
@@ -60,12 +60,15 @@ object Incremental
 		new APIChanges(modifiedAPIs, changedNames)
 	}
 
-	def changedInitial(sources: Set[File], previous: Stamps, previousAPIs: APIs, current: ReadStamps, externalAPI: String => Source)(implicit equivS: Equiv[Stamp]): InitialChanges =
+	def changedInitial(entry: String => Option[File], sources: Set[File], previousAnalysis: Analysis, current: ReadStamps, forEntry: File => Option[Analysis])(implicit equivS: Equiv[Stamp]): InitialChanges =
 	{
+		val previous = previousAnalysis.stamps
+		val previousAPIs = previousAnalysis.apis
+		
 		val srcChanges = changes(previous.allInternalSources.toSet, sources,  f => !equivS.equiv( previous.internalSource(f), current.internalSource(f) ) )
 		val removedProducts = previous.allProducts.filter( p => !equivS.equiv( previous.product(p), current.product(p) ) ).toSet
-		val binaryDepChanges = previous.allBinaries.filter( f => !equivS.equiv( previous.binary(f), current.binary(f) ) ).toSet
+		val binaryDepChanges = previous.allBinaries.filter( externalBinaryModified(entry, previous.className _, previous, current)).toSet
-		val extChanges = changedIncremental(previousAPIs.allExternals, previousAPIs.externalAPI, externalAPI)
+		val extChanges = changedIncremental(previousAPIs.allExternals, previousAPIs.externalAPI, currentExternalAPI(entry, forEntry))
 
 		InitialChanges(srcChanges, removedProducts, binaryDepChanges, extChanges )
 	}
@@ -121,6 +124,31 @@ object Incremental
 		previous -- invalidatedSrcs
 	}
 
+	def externalBinaryModified(entry: String => Option[File], className: File => Option[String], previous: Stamps, current: ReadStamps)(implicit equivS: Equiv[Stamp]): File => Boolean =
+		dependsOn =>
+			orTrue(
+				for {
+					name <- className(dependsOn)
+					e <- entry(name)
+				} yield {
+					val resolved = Locate.resolve(e, name)
+					(resolved != dependsOn) || !equivS.equiv(previous.binary(dependsOn), current.binary(resolved))
+				}
+			)
+
+	def currentExternalAPI(entry: String => Option[File], forEntry: File => Option[Analysis]): String => Source =
+		className =>
+			orEmpty(
+				for {
+					e <- entry(className)
+					analysis <- forEntry(e)
+					src <- analysis.relations.produced(Locate.resolve(e, className)).headOption
+				} yield
+					analysis.apis.internalAPI(src)
+			)
+
+	def orEmpty(o: Option[Source]): Source = o getOrElse APIs.emptyAPI
+	def orTrue(o: Option[Boolean]): Boolean = o getOrElse true
 	// unmodifiedSources should not contain any sources in the previous compilation run
 	//  (this may unnecessarily invalidate them otherwise)
 	/*def scopeInvalidation(previous: Analysis, otherSources: Set[File], names: NameChanges): Set[File] =

compile/inc/Locate.scala

@@ -29,6 +29,15 @@ object Locate
 				case x => x
 			}
 	
+	/** Returns a function that searches the provided class path for
+	* a class name and returns the entry that defines that class.*/
+	def entry(classpath: Seq[File]): String => Option[File] =
+	{
+		val entries = classpath.toStream.map { entry => (entry, definesClass(entry)) }
+		className => entries collect { case (entry, defines) if defines(className) => entry } headOption;
+	}
+	def resolve(f: File, className: String): File = if(f.isDirectory) classFile(f, className) else f
+	
 	def getValue[S](get: File => String => Option[S])(entry: File): String => Either[Boolean, S] = 
 	{
 		val defClass = definesClass(entry)

compile/inc/Stamp.scala

@@ -27,9 +27,12 @@ trait Stamps extends ReadStamps
 	def sources: Map[File, Stamp]
 	def binaries: Map[File, Stamp]
 	def products: Map[File, Stamp]
+	def classNames: Map[File, String]
+	
+	def className(bin: File): Option[String]
 	
 	def markInternalSource(src: File, s: Stamp): Stamps
-	def markBinary(bin: File, s: Stamp): Stamps
+	def markBinary(bin: File, className: String, s: Stamp): Stamps
 	def markProduct(prod: File, s: Stamp): Stamps
 	
 	def filter(prod: File => Boolean, removeSources: Iterable[File], bin: File => Boolean): Stamps
@@ -77,36 +80,37 @@ object Stamps
 	def empty: Stamps =
 	{
 		val eSt = Map.empty[File, Stamp]
-		apply(eSt, eSt, eSt)
+		apply(eSt, eSt, eSt, Map.empty[File, String])
 	}
-	def apply(products: Map[File, Stamp], sources: Map[File, Stamp], binaries: Map[File, Stamp]): Stamps = 
+	def apply(products: Map[File, Stamp], sources: Map[File, Stamp], binaries: Map[File, Stamp], binaryClassNames: Map[File, String]): Stamps = 
-		new MStamps(products, sources, binaries)
+		new MStamps(products, sources, binaries, binaryClassNames)
 }
 
-private class MStamps(val products: Map[File, Stamp], val sources: Map[File, Stamp], val binaries: Map[File, Stamp]) extends Stamps
+private class MStamps(val products: Map[File, Stamp], val sources: Map[File, Stamp], val binaries: Map[File, Stamp], val classNames: Map[File, String]) extends Stamps
 {
 	def allInternalSources: collection.Set[File] = sources.keySet
 	def allBinaries: collection.Set[File] = binaries.keySet
 	def allProducts: collection.Set[File] = products.keySet
 	
 	def ++ (o: Stamps): Stamps =
-		new MStamps(products ++ o.products, sources ++ o.sources, binaries ++ o.binaries)
+		new MStamps(products ++ o.products, sources ++ o.sources, binaries ++ o.binaries, classNames ++ o.classNames)
 	
 	def markInternalSource(src: File, s: Stamp): Stamps =
-		new MStamps(products, sources.updated(src, s), binaries)
+		new MStamps(products, sources.updated(src, s), binaries, classNames)
 
-	def markBinary(bin: File, s: Stamp): Stamps =
+	def markBinary(bin: File, className: String, s: Stamp): Stamps =
-		new MStamps(products, sources, binaries.updated(bin, s))
+		new MStamps(products, sources, binaries.updated(bin, s), classNames.updated(bin, className))
 
 	def markProduct(prod: File, s: Stamp): Stamps =
-		new MStamps(products.updated(prod, s), sources, binaries)
+		new MStamps(products.updated(prod, s), sources, binaries, classNames)
 		
 	def filter(prod: File => Boolean, removeSources: Iterable[File], bin: File => Boolean): Stamps =
-		new MStamps(products.filterKeys(prod), sources -- removeSources, binaries.filterKeys(bin))
+		new MStamps(products.filterKeys(prod), sources -- removeSources, binaries.filterKeys(bin), classNames.filterKeys(bin))
 	
 	def product(prod: File) = getStamp(products, prod)
 	def internalSource(src: File) = getStamp(sources, src)
 	def binary(bin: File) = getStamp(binaries, bin)
+	def className(bin: File) = classNames get bin
 	
 }
 

compile/interface/Analyzer.scala

@@ -37,20 +37,19 @@ final class Analyzer(val global: Global, val callback: AnalysisCallback) extends
 				callback.beginSource(sourceFile)
 				for(on <- unit.depends)
 				{
+					def binaryDependency(file: File, className: String) = callback.binaryDependency(file, className, sourceFile)
 					val onSource = on.sourceFile
 					if(onSource == null)
 					{
 						classFile(on) match
 						{
-							case Some(f) =>
+							case Some((f,className)) =>
-							{
 								f match
 								{
-									case ze: ZipArchive#Entry => callback.jarDependency(new File(archive(ze).getName), sourceFile)
+									case ze: ZipArchive#Entry => binaryDependency(new File(archive(ze).getName), className)
-									case pf: PlainFile => callback.classDependency(pf.file, sourceFile)
+									case pf: PlainFile => binaryDependency(pf.file, className)
 									case _ => ()
 								}
-							}
 							case None => ()
 						}
 					}
@@ -82,25 +81,11 @@ final class Analyzer(val global: Global, val callback: AnalysisCallback) extends
 		}
 	}
 
-	private def classForName(name: String) =
+	private def classFile(sym: Symbol): Option[(AbstractFile, String)] =
-	{
-		try
-		{
-			if(name.indexOf('.') < 0)
-			{
-				val sym = definitions.EmptyPackageClass.info.member(newTypeName(name))
-				if(sym != NoSymbol) Some( sym ) else { callback.superclassNotFound(name); None }
-			}
-			else
-				Some( global.definitions.getClass(newTermName(name)) )
-		}
-		catch { case fe: scala.tools.nsc.FatalError =>  callback.superclassNotFound(name); None }
-	}
-	private def classFile(sym: Symbol): Option[AbstractFile] =
 	{
 		import scala.tools.nsc.symtab.Flags
 		val name = flatname(sym, finder.classSeparator) + moduleSuffix(sym)
-		finder.findClass(name) orElse {
+		finder.findClass(name).map(file => (file, name))  orElse {
 			if(isTopLevelModule(sym))
 			{
 				val linked = linkedClass(sym)

compile/persist/AnalysisFormats.scala

@@ -21,8 +21,8 @@ object AnalysisFormats
 	implicit def setupFormat(implicit outDirF: Format[File], optionF: Format[CompileOptions], compilerVersion: Format[String], orderF: Format[CompileOrder.Value]): Format[CompileSetup] =
 		asProduct4[CompileSetup, File, CompileOptions, String, CompileOrder.Value]( (a,b,c,d) => new CompileSetup(a,b,c,d) )(s => (s.outputDirectory, s.options, s.compilerVersion, s.order))(outDirF, optionF, compilerVersion, orderF)
 
-	implicit def stampsFormat(implicit prodF: Format[Map[File, Stamp]], srcF: Format[Map[File, Stamp]], binF: Format[Map[File, Stamp]]): Format[Stamps] =
+	implicit def stampsFormat(implicit prodF: Format[Map[File, Stamp]], srcF: Format[Map[File, Stamp]], binF: Format[Map[File, Stamp]], nameF: Format[Map[File, String]]): Format[Stamps] =
-		asProduct3( Stamps.apply _ )( s => (s.products, s.sources, s.binaries) )(prodF, srcF, binF)
+		asProduct4( Stamps.apply _ )( s => (s.products, s.sources, s.binaries, s.classNames) )(prodF, srcF, binF, nameF)
 
 	implicit def stampFormat(implicit hashF: Format[Hash], modF: Format[LastModified], existsF: Format[Exists]): Format[Stamp] =
 		asUnion(hashF, modF, existsF)

interface/src/main/java/xsbti/AnalysisCallback.java

@@ -7,43 +7,21 @@ import java.io.File;
 
 public interface AnalysisCallback
 {
-	/** The names of classes that the analyzer should find subclasses of.*/
-	public String[] superclassNames();
-	/** The names of annotations that the analyzer should look for on methods and classes.*/
-	public String[] annotationNames();
-	/** Called when the the given superclass could not be found on the classpath by the compiler.*/
-	public void superclassNotFound(String superclassName);
 	/** Called before the source at the given location is processed. */
 	public void beginSource(File source);
-	/** Called when the a subclass of one of the classes given in <code>superclassNames</code> is
-	* discovered.*/
-	public void foundSubclass(File source, String subclassName, String superclassName, boolean isModule);
-	/** Called when an annotation with name <code>annotationName</code> is found on a class or one of its methods.*/
-	public void foundAnnotated(File source, String className, String annotationName, boolean isModule);
 	/** Called to indicate that the source file <code>source</code> depends on the source file
 	* <code>dependsOn</code>.  Note that only source files included in the current compilation will
 	* passed to this method.  Dependencies on classes generated by sources not in the current compilation will
 	* be passed as class dependencies to the classDependency method.*/
 	public void sourceDependency(File dependsOn, File source);
-	/** Called to indicate that the source file <code>source</code> depends on the jar
+	/** Called to indicate that the source file <code>source</code> depends on the top-level
-	* <code>jar</code>.*/
+	* class named <code>name</code> from class or jar file <code>binary</code>. */
-	public void jarDependency(File jar, File source);
+	public void binaryDependency(File binary, String name, File source);
-	/** Called to indicate that the source file <code>source</code> depends on the class file
-	* <code>clazz</code>.*/
-	public void classDependency(File clazz, File source);
-	/** Called to indicate that the source file <code>sourcePath</code> depends on the class file
-	* <code>classFile</code> that is a product of some source.  This differs from classDependency
-	* because it is really a sourceDependency.  The source corresponding to <code>classFile</code>
-	* was not incuded in the compilation so the plugin doesn't know what the source is though.  It
-	* only knows that the class file came from the output directory.*/
-	public void productDependency(File classFile, File sourcePath);
 	/** Called to indicate that the source file <code>source</code> produces a class file at
 	* <code>module</code>.*/
 	public void generatedClass(File source, File module);
 	/** Called after the source at the given location has been processed. */
 	public void endSource(File sourcePath);
-	/** Called when a module with a public 'main' method with the right signature is found.*/
-	public void foundApplication(File source, String className);
 	/** Called when the public API of a source file is extracted. */
 	public void api(File sourceFile, xsbti.api.Source source);
 }

main/ClasspathProject.scala

@@ -1,24 +1,44 @@
+/* sbt -- Simple Build Tool
+ * Copyright 2010  Mark Harrah
+ */
 package sbt
 
 	import std._
+	import inc.Analysis
 	import TaskExtra._
 	import ClasspathProject._
 	import java.io.File
 	import Path._
+	import Types._
 	import scala.xml.NodeSeq
 
 trait ClasspathProject
 {
 	def configurations: Seq[Configuration]
-	def products(configuration: Configuration, intermediate: Boolean): Task[Seq[File]]
+	val products: Classpath
-	def unmanagedClasspath(configuration: Configuration): Task[Seq[File]]
+	val unmanagedClasspath: Classpath
-	def managedClasspath(configuration: Configuration): Task[Seq[File]]
+	val managedClasspath: Classpath
+	val internalDependencyClasspath: Classpath
 
-	def dependencyClasspath(configuration: Configuration): Task[Seq[File]] =
+	lazy val externalDependencyClasspath: Classpath =
-		(unmanagedClasspath(configuration), managedClasspath(configuration)) map concat[File]
+		TaskMap { (configuration: Configuration) =>
+			val un = unmanagedClasspath(configuration)
+			val m = managedClasspath(configuration)
+			(un, m) map concat[Attributed[File]]
+		}
 
-	def fullClasspath(configuration: Configuration, intermediate: Boolean): Task[Seq[File]] =
+	lazy val dependencyClasspath: Classpath =
-		(dependencyClasspath(configuration), products(configuration, intermediate) ) map concat[File]
+		TaskMap { (configuration: Configuration) =>
+			val external = externalDependencyClasspath(configuration)
+			val internal = internalDependencyClasspath(configuration)
+			(external, internal) map concat[Attributed[File]]
+		}
+	lazy val fullClasspath: Classpath =
+		TaskMap { case (configuration: Configuration) =>
+			val dep = dependencyClasspath(configuration)
+			val prod = products(configuration)
+			(dep, prod) map concat[Attributed[File]]
+		}
 }
 
 trait BasicClasspathProject extends ClasspathProject
@@ -42,18 +62,25 @@ trait BasicClasspathProject extends ClasspathProject
 	def classpathFilter: FileFilter = GlobFilter("*.jar")
 	def defaultExcludeFilter: FileFilter = MultiProject.defaultExcludes
 
-	override def managedClasspath(configuration: Configuration) =
+	override val managedClasspath: Classpath =
-		update map { _.getOrElse(configuration, error("No such configuration '" + configuration.toString + "'")) }
+		TaskMap { configuration =>
-
+			update map { x => attributed(x.getOrElse(configuration, error("No such configuration '" + configuration.toString + "'")) ) }
-	def unmanagedClasspath(configuration: Configuration): Task[Seq[File]] =
-		unmanagedBase map { base =>
-			(base * (classpathFilter -- defaultExcludeFilter) +++
-			(base / configuration.toString).descendentsExcept(classpathFilter, defaultExcludeFilter)).getFiles.toSeq
 		}
 
+	val unmanagedClasspath: Classpath =
+		TaskMap { configuration =>
+			unmanagedBase map { base =>
+				attributed( (base * (classpathFilter -- defaultExcludeFilter) +++
+				(base / configuration.toString).descendentsExcept(classpathFilter, defaultExcludeFilter)).getFiles.toSeq )
+			}
+		}
+		
+	lazy val configurationMap: Map[String, Configuration] = 
+		configurations map { conf => (conf.name, conf) } toMap;
+
 	import Types._
 	lazy val update = (ivyModule, updateConfig) map { case module :+: config :+: HNil =>
-		val confMap = configurations map { conf => (conf.name, conf) } toMap;
+		val confMap = configurationMap
 		IvyActions.update(module, config) map { case (key, value) => (confMap(key), value) } toMap;
 	}
 }
@@ -61,7 +88,7 @@ trait BasicClasspathProject extends ClasspathProject
 trait DefaultClasspathProject extends BasicClasspathProject with Project
 {
 	def projectID: ModuleID
-	def baseResolvers: Seq[Resolver] = Resolver.withDefaultResolvers(ReflectUtilities.allVals[Resolver](this).toSeq.map(_._2) )
+	def baseResolvers: Seq[Resolver]
 	lazy val resolvers: Task[Seq[Resolver]] = task { baseResolvers }
 
 	def otherResolvers: Seq[Resolver] = Nil
@@ -84,6 +111,20 @@ trait DefaultClasspathProject extends BasicClasspathProject with Project
 	def ivyScala: Option[IvyScala] = None
 	def ivyValidate: Boolean = false
 
+	//TODO: transitive dependencies
+	lazy val internalDependencyClasspath: Classpath =
+		TaskMap { (conf: Configuration) =>
+			val confMap = configurationMap
+			val productsTasks =
+				for( (p: ClasspathProject, Some(confString)) <- ClasspathProject.resolvedDependencies(this)) yield
+				{
+					println("Project " + p.name + ", conf: " + confString)
+					val to = parseSimpleConfigurations(confString).getOrElse(conf.toString, missingMapping(this.name, p.name, conf.toString))
+					p.products(confMap(to))
+				}
+			(productsTasks.toSeq.join) named(name + "/join") map(_.flatten) named(name + "/int")
+		}
+
 	lazy val unmanagedBase = task { dependencyPath.asFile }
 
 	lazy val moduleSettings: Task[ModuleSettings] = task {
@@ -98,10 +139,10 @@ trait MultiClasspathProject extends DefaultClasspathProject
 	def version: String
 
 	def projectDependencies: Iterable[ModuleID] =
-		ClasspathProject.resolvedDependencies(this) collect { case (p: DefaultClasspathProject, conf) => p.projectID.copy(configurations = conf) }
+		resolvedDependencies(this) collect { case (p: DefaultClasspathProject, conf) => p.projectID.copy(configurations = conf) }
 
 	lazy val projectResolver =
-		ClasspathProject.depMap(this) map { m =>
+		depMap(this) map { m =>
 			new RawRepository(new ProjectResolver("inter-project", m))
 		}
 
@@ -111,14 +152,42 @@ trait MultiClasspathProject extends DefaultClasspathProject
 	override lazy val resolvers: Task[Seq[Resolver]] = projectResolver map { _ +: baseResolvers }
 }
 
+trait ReflectiveClasspathProject extends DefaultClasspathProject
+{
+	private[this] def vals[T: Manifest] = ReflectUtilities.allVals[T](this).toSeq.map(_._2)
+	def configurations: Seq[Configuration] = vals[Configuration]
+	def baseResolvers: Seq[Resolver] = Resolver.withDefaultResolvers(vals[Resolver] )
+}
+
 	import org.apache.ivy.core.module
 	import module.id.ModuleRevisionId
 	import module.descriptor.ModuleDescriptor
 
 object ClasspathProject
 {
+	type Classpath = Configuration => Task[Seq[Attributed[File]]]
+	
+	val Analyzed = AttributeKey[Analysis]("analysis")
+	
+	def attributed[T](in: Seq[T]): Seq[Attributed[T]] = in map Attributed.blank
+	
+	def analyzed[T](data: T, analysis: Analysis) = Attributed.blank(data).put(Analyzed, analysis) 
+	
+	def analyzed(compile: Task[Analysis], inputs: Task[Compile.Inputs]): Task[Attributed[File]] =
+		(compile, inputs) map { case analysis :+: i :+: HNil =>
+			analyzed(i.config.classesDirectory, analysis)
+		}
+
 	def concat[A]: (Seq[A], Seq[A]) => Seq[A] = _ ++ _
 
+	def extractAnalysis[T](a: Attributed[T]): (T, Analysis) = 
+		(a.data, a.metadata get Analyzed getOrElse Analysis.Empty)
+
+	def analysisMap[T](cp: Seq[Attributed[T]]): Map[T, Analysis] =
+		(cp map extractAnalysis).toMap
+
+	def data[T](in: Seq[Attributed[T]]): Seq[T] = in.map(_.data)
+
 	def depMap(root: Project): Task[Map[ModuleRevisionId, ModuleDescriptor]] =
 		depMap(MultiProject.topologicalSort(root).dropRight(1) collect { case cp: DefaultClasspathProject => cp })
 
@@ -131,20 +200,27 @@ object ClasspathProject
 		}
 
 	def resolvedDependencies(p: Project): Iterable[(Project, Option[String])] =
-	{
+		p.dependencies map { cp =>
-		import ProjectDependency.Classpath
+			(resolveProject(cp.project, p), cp.configuration)
-		p.dependencies map {
-			case Classpath(Left(extPath), conf) => (p.info.externals(extPath), conf)
-			case Classpath(Right(proj), conf) => (proj, conf)
 		}
-	}
+		
+	def resolveProject(e: Either[File, Project], context: Project): Project =
+		e match {
+			case Left(extPath) => context.info.externals(extPath)
+			case Right(proj) => proj
+		}
+		
 
 	def parseSimpleConfigurations(confString: String): Map[String, String] =
-		confString.split(";").map( conf =>
+		confString.split(";").flatMap( conf =>
-			conf.split("->",2).toList.map(_.trim) match {
+			trim(conf.split("->",2)) match {
-				case x :: Nil => (x,x)
+				case x :: Nil => (x,x) :: Nil
-				case x :: y :: Nil => (x,y)
+				case x :: y :: Nil => trim(x.split(",")) map { a => (a,y) }
 				case _ => error("Invalid configuration '" + conf + "'") // shouldn't get here
 			}
 		).toMap
+	private def trim(a: Array[String]): List[String] = a.toList.map(_.trim)
+	
+	def missingMapping(from: String, to: String, conf: String) = 
+		error("No configuration mapping defined from '" + from + "' to '" + to + "' for '" + conf + "'")
 }

main/Compile.scala

@@ -14,7 +14,7 @@ object Compile
 
 	final class Inputs(val compilers: Compilers, val config: Options, val incSetup: IncSetup, val log: Logger)
 	final class Options(val classpath: Seq[File], val sources: Seq[File], val classesDirectory: File, val options: Seq[String], val javacOptions: Seq[String], val maxErrors: Int)
-	final class IncSetup(val javaSrcBases: Seq[File], val cacheDirectory: File)
+	final class IncSetup(val javaSrcBases: Seq[File], val analysisMap: Map[File, Analysis], val cacheDirectory: File)
 	final class Compilers(val scalac: AnalyzingCompiler, val javac: JavaCompiler)
 
 	def inputs(classpath: Seq[File], sources: Seq[File], outputDirectory: File, options: Seq[String], javacOptions: Seq[String], javaSrcBases: Seq[File], maxErrors: Int)(implicit compilers: Compilers, log: Logger): Inputs =
@@ -23,13 +23,13 @@ object Compile
 		val classesDirectory = outputDirectory / "classes"
 		val cacheDirectory = outputDirectory / "cache"
 		val augClasspath = classesDirectory.asFile +: classpath
-		inputs(augClasspath, sources, classesDirectory, options, javacOptions, javaSrcBases, cacheDirectory, maxErrors)
+		inputs(augClasspath, sources, classesDirectory, options, javacOptions, javaSrcBases, Map.empty, cacheDirectory, maxErrors)
 	}
-	def inputs(classpath: Seq[File], sources: Seq[File], classesDirectory: File, options: Seq[String], javacOptions: Seq[String], javaSrcBases: Seq[File], cacheDirectory: File, maxErrors: Int)(implicit compilers: Compilers, log: Logger): Inputs =
+	def inputs(classpath: Seq[File], sources: Seq[File], classesDirectory: File, options: Seq[String], javacOptions: Seq[String], javaSrcBases: Seq[File], analysisMap: Map[File, Analysis], cacheDirectory: File, maxErrors: Int)(implicit compilers: Compilers, log: Logger): Inputs =
 		new Inputs(
 			compilers,
 			new Options(classpath, sources, classesDirectory, options, javacOptions, maxErrors),
-			new IncSetup(javaSrcBases, cacheDirectory),
+			new IncSetup(javaSrcBases, analysisMap, cacheDirectory),
 			log
 		)
 
@@ -74,6 +74,6 @@ object Compile
 			import in.incSetup._
 		
 		val agg = new build.AggressiveCompile(cacheDirectory)
-		agg(scalac, javac, sources, classpath, classesDirectory, javaSrcBases, options, javacOptions, maxErrors)(in.log)
+		agg(scalac, javac, sources, classpath, classesDirectory, javaSrcBases, options, javacOptions, analysisMap, maxErrors)(in.log)
 	}
 }

main/build/AggressiveCompile.scala

@@ -21,14 +21,14 @@ final class CompileConfiguration(val sources: Seq[File], val classpath: Seq[File
 
 class AggressiveCompile(cacheDirectory: File)
 {
-	def apply(compiler: AnalyzingCompiler, javac: JavaCompiler, sources: Seq[File], classpath: Seq[File], outputDirectory: File, javaSrcBases: Seq[File] = Nil, options: Seq[String] = Nil, javacOptions: Seq[String] = Nil, maxErrors: Int = 100)(implicit log: Logger): Analysis =
+	def apply(compiler: AnalyzingCompiler, javac: JavaCompiler, sources: Seq[File], classpath: Seq[File], outputDirectory: File, javaSrcBases: Seq[File] = Nil, options: Seq[String] = Nil, javacOptions: Seq[String] = Nil, analysisMap: Map[File, Analysis] = Map.empty, maxErrors: Int = 100)(implicit log: Logger): Analysis =
 	{
 		val setup = new CompileSetup(outputDirectory, new CompileOptions(options, javacOptions), compiler.scalaInstance.actualVersion, CompileOrder.Mixed)
-		compile1(sources, classpath, javaSrcBases, setup, store, Map.empty, compiler, javac, maxErrors)
+		compile1(sources, classpath, javaSrcBases, setup, store, analysisMap, compiler, javac, maxErrors)
 	}
 
 	def withBootclasspath(args: CompilerArguments, classpath: Seq[File]): Seq[File] =
-		args.bootClasspath ++ classpath
+		args.bootClasspath ++ args.finishClasspath(classpath)
 
 	def compile1(sources: Seq[File], classpath: Seq[File], javaSrcBases: Seq[File], setup: CompileSetup, store: AnalysisStore, analysis: Map[File, Analysis], compiler: AnalyzingCompiler, javac: JavaCompiler, maxErrors: Int)(implicit log: Logger): Analysis =
 	{
@@ -46,9 +46,10 @@ class AggressiveCompile(cacheDirectory: File)
 			val extApis = getAnalysis(f) match { case Some(a) => a.apis.external; case None => Map.empty[String, Source] }
 			extApis.get _
 		}
-		val apiOrEmpty = (api: Either[Boolean, Source]) => api.right.toOption.getOrElse( APIs.emptyAPI )
+		val apiOption= (api: Either[Boolean, Source]) => api.right.toOption
 		val cArgs = new CompilerArguments(compiler.scalaInstance, compiler.cp)
-		val externalAPI = apiOrEmpty compose Locate.value(withBootclasspath(cArgs, classpath), getAPI)
+		val searchClasspath = withBootclasspath(cArgs, classpath)
+		val entry = Locate.entry(searchClasspath)
 		
 		val compile0 = (include: Set[File], callback: AnalysisCallback) => {
 			IO.createDirectory(outputDirectory)
@@ -72,7 +73,7 @@ class AggressiveCompile(cacheDirectory: File)
 			case Some(previous) if equiv.equiv(previous, currentSetup) => previousAnalysis
 			case _ => Incremental.prune(sourcesSet, previousAnalysis)
 		}
-		IncrementalCompile(sourcesSet, compile0, analysis, externalAPI)
+		IncrementalCompile(sourcesSet, entry, compile0, analysis, getAnalysis, outputDirectory)
 	}
 	private def extract(previous: Option[(Analysis, CompileSetup)]): (Analysis, Option[CompileSetup]) =
 		previous match

util/classfile/Analyze.scala

@@ -56,6 +56,7 @@ private[sbt] object Analyze
 						val loaded = load(tpe, Some("Problem processing dependencies of source " + source))
 						for(clazz <- loaded; file <- ErrorHandling.convert(IO.classLocationFile(clazz)).right)
 						{
+							val name = clazz.getName
 							if(file.isDirectory)
 							{
 								val resolved = resolveClassFile(file, tpe)
@@ -66,14 +67,14 @@ private[sbt] object Analyze
 									productToSource.get(resolvedPath) match
 									{
 										case Some(dependsOn) => analysis.sourceDependency(dependsOn, source)
-										case None => analysis.productDependency(resolvedPath, source)
+										case None => analysis.binaryDependency(resolved, clazz.getName, source)
 									}
 								}
 								else
-									analysis.classDependency(resolved, source)
+									analysis.binaryDependency(resolved, name, source)
 							}
 							else
-								analysis.jarDependency(file, source)
+								analysis.binaryDependency(file, name, source)
 						}
 					}
 				}