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sbt.inc.Compile.scala Maven / Gradle / Ivy
/* sbt -- Simple Build Tool
* Copyright 2010 Mark Harrah
*/
package sbt
package inc
import xsbti.api.{ Source, SourceAPI, Compilation, OutputSetting, _internalOnly_NameHashes }
import xsbti.compile.{ DependencyChanges, Output, SingleOutput, MultipleOutput }
import xsbti.{ Position, Problem, Severity }
import Logger.{ m2o, problem }
import java.io.File
import xsbti.api.Definition
import xsbti.DependencyContext
import xsbti.DependencyContext.{ DependencyByInheritance, DependencyByMemberRef }
/**
* Helper methods for running incremental compilation. All this is responsible for is
* adapting any xsbti.AnalysisCallback into one compatible with the [[sbt.inc.Incremental]] class.
*/
object IncrementalCompile {
/**
* Runs the incremental compilation algorithm.
* @param sources
* The full set of input sources
* @param entry
* A className -> source file lookup function.
* @param compile
* The mechanism to run a single 'step' of compile, for ALL source files involved.
* @param previous
* The previous dependency Analysis (or an empty one).
* @param forEntry
* The dependency Analysis associated with a given file
* @param output
* The configured output directory/directory mapping for source files.
* @param log
* Where all log messages should go
* @param options
* Incremental compiler options (like name hashing vs. not).
* @return
* A flag of whether or not compilation completed succesfully, and the resulting dependency analysis object.
*
*/
def apply(sources: Set[File], entry: String => Option[File],
compile: (Set[File], DependencyChanges, xsbti.AnalysisCallback) => Unit,
previous: Analysis,
forEntry: File => Option[Analysis],
output: Output, log: Logger,
options: IncOptions): (Boolean, Analysis) =
{
val current = Stamps.initial(Stamp.lastModified, Stamp.hash, Stamp.lastModified)
val internalMap = (f: File) => previous.relations.produced(f).headOption
val externalAPI = getExternalAPI(entry, forEntry)
try {
Incremental.compile(sources, entry, previous, current, forEntry, doCompile(compile, internalMap, externalAPI, current, output, options), log, options)
} catch {
case e: xsbti.CompileCancelled =>
log.info("Compilation has been cancelled")
// in case compilation got cancelled potential partial compilation results (e.g. produced classs files) got rolled back
// and we can report back as there was no change (false) and return a previous Analysis which is still up-to-date
(false, previous)
}
}
def doCompile(compile: (Set[File], DependencyChanges, xsbti.AnalysisCallback) => Unit, internalMap: File => Option[File], externalAPI: (File, String) => Option[Source], current: ReadStamps, output: Output, options: IncOptions) =
(srcs: Set[File], changes: DependencyChanges) => {
val callback = new AnalysisCallback(internalMap, externalAPI, current, output, options)
compile(srcs, changes, 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.definesClass(className).headOption flatMap { src =>
analysis.apis.internal get src
}
}
}
}
private final class AnalysisCallback(internalMap: File => Option[File], externalAPI: (File, String) => Option[Source], current: ReadStamps, output: Output, options: IncOptions) extends xsbti.AnalysisCallback {
val compilation = {
val outputSettings = output match {
case single: SingleOutput => Array(new OutputSetting("/", single.outputDirectory.getAbsolutePath))
case multi: MultipleOutput =>
multi.outputGroups.map(out => new OutputSetting(out.sourceDirectory.getAbsolutePath, out.outputDirectory.getAbsolutePath))
}
new Compilation(System.currentTimeMillis, outputSettings)
}
override def toString = (List("APIs", "Binary deps", "Products", "Source deps") zip List(apis, binaryDeps, classes, intSrcDeps)).map { case (label, map) => label + "\n\t" + map.mkString("\n\t") }.mkString("\n")
import collection.mutable.{ HashMap, HashSet, ListBuffer, Map, Set }
private[this] val apis = new HashMap[File, (Int, SourceAPI)]
private[this] val usedNames = new HashMap[File, Set[String]]
private[this] val publicNameHashes = new HashMap[File, _internalOnly_NameHashes]
private[this] val unreporteds = new HashMap[File, ListBuffer[Problem]]
private[this] val reporteds = new HashMap[File, ListBuffer[Problem]]
private[this] val binaryDeps = new HashMap[File, Set[File]]
// source file to set of generated (class file, class name)
private[this] val classes = new HashMap[File, Set[(File, String)]]
// generated class file to its source file
private[this] val classToSource = new HashMap[File, File]
// internal source dependencies
private[this] val intSrcDeps = new HashMap[File, Set[InternalDependency]]
// external source dependencies
private[this] val extSrcDeps = new HashMap[File, Set[ExternalDependency]]
private[this] val binaryClassName = new HashMap[File, String]
// source files containing a macro def.
private[this] val macroSources = Set[File]()
// source files defining a package object
private[this] val packageObjectSources = Set[File]()
private def add[A, B](map: Map[A, Set[B]], a: A, b: B): Unit =
map.getOrElseUpdate(a, new HashSet[B]) += b
def problem(category: String, pos: Position, msg: String, severity: Severity, reported: Boolean): Unit =
{
for (source <- m2o(pos.sourceFile)) {
val map = if (reported) reporteds else unreporteds
map.getOrElseUpdate(source, ListBuffer.empty) += Logger.problem(category, pos, msg, severity)
}
}
def sourceDependency(dependsOn: File, source: File, context: DependencyContext) = {
add(intSrcDeps, source, InternalDependency(source, dependsOn, context))
}
@deprecated("Use `sourceDependency(File, File, DependencyContext)`.", "0.13.8")
def sourceDependency(dependsOn: File, source: File, inherited: Boolean) =
{
val context = if (inherited) DependencyByInheritance else DependencyByMemberRef
sourceDependency(dependsOn, source, context)
}
private[this] def externalBinaryDependency(binary: File, className: String, source: File, context: DependencyContext) = {
binaryClassName.put(binary, className)
add(binaryDeps, source, binary)
}
private[this] def externalSourceDependency(sourceFile: File, dependsOn: String, source: Source, context: DependencyContext) = {
val dependency = ExternalDependency(sourceFile, dependsOn, source, context)
add(extSrcDeps, sourceFile, dependency)
}
def binaryDependency(classFile: File, name: String, source: File, context: DependencyContext) =
internalMap(classFile) match {
case Some(dependsOn) =>
// dependency is a product of a source not included in this compilation
sourceDependency(dependsOn, source, context)
case None =>
classToSource.get(classFile) match {
case Some(dependsOn) =>
// dependency is a product of a source in this compilation step,
// but not in the same compiler run (as in javac v. scalac)
sourceDependency(dependsOn, source, context)
case None =>
externalDependency(classFile, name, source, context)
}
}
@deprecated("Use `binaryDependency(File, String, File, DependencyContext)`.", "0.13.8")
def binaryDependency(classFile: File, name: String, source: File, inherited: Boolean) = {
val context = if (inherited) DependencyByInheritance else DependencyByMemberRef
binaryDependency(classFile, name, source, context)
}
private[this] def externalDependency(classFile: File, name: String, source: File, context: DependencyContext): Unit =
externalAPI(classFile, name) match {
case Some(api) =>
// dependency is a product of a source in another project
externalSourceDependency(source, name, api, context)
case None =>
// dependency is some other binary on the classpath
externalBinaryDependency(classFile, name, source, context)
}
def generatedClass(source: File, module: File, name: String) =
{
add(classes, source, (module, name))
classToSource.put(module, source)
}
// empty value used when name hashing algorithm is disabled
private val emptyNameHashes = new xsbti.api._internalOnly_NameHashes(Array.empty, Array.empty)
def api(sourceFile: File, source: SourceAPI): Unit = {
import xsbt.api.{ APIUtil, HashAPI }
if (APIUtil.isScalaSourceName(sourceFile.getName)) {
if (APIUtil.hasMacro(source)) macroSources += sourceFile
if (APIUtil.hasPackageObject(source)) packageObjectSources += sourceFile
}
publicNameHashes(sourceFile) = {
if (nameHashing)
(new xsbt.api.NameHashing).nameHashes(source)
else
emptyNameHashes
}
val shouldMinimize = !Incremental.apiDebug(options)
val savedSource = if (shouldMinimize) APIUtil.minimize(source) else source
apis(sourceFile) = (HashAPI(source), savedSource)
}
def usedName(sourceFile: File, name: String) = add(usedNames, sourceFile, name)
def nameHashing: Boolean = options.nameHashing
def includeSynthToNameHashing: Boolean = options.includeSynthToNameHashing
def get: Analysis = addUsedNames(addCompilation(addProductsAndDeps(Analysis.empty(nameHashing = nameHashing))))
def getOrNil[A, B](m: collection.Map[A, Seq[B]], a: A): Seq[B] = m.get(a).toList.flatten
def addCompilation(base: Analysis): Analysis = base.copy(compilations = base.compilations.add(compilation))
def addUsedNames(base: Analysis): Analysis = (base /: usedNames) {
case (a, (src, names)) =>
(a /: names) { case (a, name) => a.copy(relations = a.relations.addUsedName(src, name)) }
}
def addProductsAndDeps(base: Analysis): Analysis =
(base /: apis) {
case (a, (src, api)) =>
val stamp = current.internalSource(src)
val hash = stamp match { case h: Hash => h.value; case _ => new Array[Byte](0) }
val nameHashes = publicNameHashes(src)
// TODO store this in Relations, rather than Source.
val hasMacro: Boolean = macroSources.contains(src)
val hasPackageObject = packageObjectSources.contains(src)
val s = new xsbti.api.Source(compilation, hash, api._2, api._1, nameHashes, hasMacro, hasPackageObject)
val info = SourceInfos.makeInfo(getOrNil(reporteds, src), getOrNil(unreporteds, src))
val binaries = binaryDeps.getOrElse(src, Nil: Iterable[File])
val prods = classes.getOrElse(src, Nil: Iterable[(File, String)])
val products = prods.map { case (prod, name) => (prod, name, current product prod) }
val internalDeps = intSrcDeps.getOrElse(src, Set.empty)
val externalDeps = extSrcDeps.getOrElse(src, Set.empty)
val binDeps = binaries.map(d => (d, binaryClassName(d), current binary d))
a.addSource(src, s, stamp, info, products, internalDeps, externalDeps, binDeps)
}
}
