mirror of https://github.com/sbt/sbt.git
255 lines
10 KiB
Scala
255 lines
10 KiB
Scala
/* sbt -- Simple Build Tool
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* Copyright 2008, 2009 Mark Harrah
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*/
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package xsbt
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import xsbti.{AnalysisCallback,Logger,Problem,Reporter,Severity}
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import xsbti.compile._
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import scala.tools.nsc.{backend, io, reporters, symtab, util, Phase, Global, Settings, SubComponent}
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import scala.tools.nsc.interactive.RangePositions
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import backend.JavaPlatform
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import scala.tools.util.PathResolver
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import symtab.SymbolLoaders
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import util.{ClassPath,DirectoryClassPath,MergedClassPath,JavaClassPath}
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import ClassPath.{ClassPathContext,JavaContext}
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import io.AbstractFile
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import scala.annotation.tailrec
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import scala.collection.mutable
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import Log.debug
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import java.io.File
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final class CompilerInterface
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{
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def newCompiler(options: Array[String], output: Output, initialLog: Logger, initialDelegate: Reporter, resident: Boolean): CachedCompiler =
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new CachedCompiler0(options, output, new WeakLog(initialLog, initialDelegate), resident)
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def run(sources: Array[File], changes: DependencyChanges, callback: AnalysisCallback, log: Logger, delegate: Reporter, progress: CompileProgress, cached: CachedCompiler): Unit =
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cached.run(sources, changes, callback, log, delegate, progress)
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}
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// for compatibility with Scala versions without Global.registerTopLevelSym (2.8.1 and earlier)
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sealed trait GlobalCompat { self: Global =>
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def registerTopLevelSym(sym: Symbol): Unit
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sealed trait RunCompat {
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def informUnitStarting(phase: Phase, unit: CompilationUnit) {}
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}
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}
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sealed abstract class CallbackGlobal(settings: Settings, reporter: reporters.Reporter, output: Output) extends Global(settings, reporter) with GlobalCompat {
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def callback: AnalysisCallback
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def findClass(name: String): Option[(AbstractFile,Boolean)]
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lazy val outputDirs: Iterable[File] = {
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output match {
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case single: SingleOutput => List(single.outputDirectory)
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case multi: MultipleOutput => multi.outputGroups.toStream map (_.outputDirectory)
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}
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}
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// Map source files to public inherited dependencies. These dependencies are tracked as the symbol for the dealiased base class.
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val inheritedDependencies = new mutable.HashMap[File, mutable.Set[Symbol]]
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def addInheritedDependencies(file: File, deps: Iterable[Symbol]) {
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inheritedDependencies.getOrElseUpdate(file, new mutable.HashSet) ++= deps
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}
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}
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class InterfaceCompileFailed(val arguments: Array[String], val problems: Array[Problem], override val toString: String) extends xsbti.CompileFailed
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class InterfaceCompileCancelled(val arguments: Array[String], override val toString: String) extends xsbti.CompileCancelled
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private final class WeakLog(private[this] var log: Logger, private[this] var delegate: Reporter)
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{
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def apply(message: String) {
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assert(log ne null, "Stale reference to logger")
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log.error(Message(message))
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}
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def logger: Logger = log
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def reporter: Reporter = delegate
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def clear() {
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log = null
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delegate = null
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}
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}
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private final class CachedCompiler0(args: Array[String], output: Output, initialLog: WeakLog, resident: Boolean) extends CachedCompiler
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{
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val settings = new Settings(s => initialLog(s))
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output match {
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case multi: MultipleOutput =>
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for (out <- multi.outputGroups)
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settings.outputDirs.add(out.sourceDirectory.getAbsolutePath, out.outputDirectory.getAbsolutePath)
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case single: SingleOutput =>
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settings.outputDirs.setSingleOutput(single.outputDirectory.getAbsolutePath)
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}
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val command = Command(args.toList, settings)
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private[this] val dreporter = DelegatingReporter(settings, initialLog.reporter)
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try {
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if(!noErrors(dreporter)) {
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dreporter.printSummary()
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handleErrors(dreporter, initialLog.logger)
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}
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} finally
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initialLog.clear()
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def noErrors(dreporter: DelegatingReporter) = !dreporter.hasErrors && command.ok
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def commandArguments(sources: Array[File]): Array[String] =
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(command.settings.recreateArgs ++ sources.map(_.getAbsolutePath)).toArray[String]
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def run(sources: Array[File], changes: DependencyChanges, callback: AnalysisCallback, log: Logger, delegate: Reporter, progress: CompileProgress): Unit = synchronized
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{
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debug(log, "Running cached compiler " + hashCode.toHexString + ", interfacing (CompilerInterface) with Scala compiler " + scala.tools.nsc.Properties.versionString)
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val dreporter = DelegatingReporter(settings, delegate)
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try { run(sources.toList, changes, callback, log, dreporter, progress) }
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finally { dreporter.dropDelegate() }
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}
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private[this] def run(sources: List[File], changes: DependencyChanges, callback: AnalysisCallback, log: Logger, dreporter: DelegatingReporter, compileProgress: CompileProgress)
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{
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if(command.shouldStopWithInfo)
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{
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dreporter.info(null, command.getInfoMessage(compiler), true)
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throw new InterfaceCompileFailed(args, Array(), "Compiler option supplied that disabled actual compilation.")
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}
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if(noErrors(dreporter))
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{
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debug(log, args.mkString("Calling Scala compiler with arguments (CompilerInterface):\n\t", "\n\t", ""))
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compiler.set(callback, dreporter)
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val run = new compiler.Run with compiler.RunCompat {
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override def informUnitStarting(phase: Phase, unit: compiler.CompilationUnit) {
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compileProgress.startUnit(phase.name, unit.source.path)
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}
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override def progress(current: Int, total: Int) {
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if (!compileProgress.advance(current, total))
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cancel
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}
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}
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val sortedSourceFiles = sources.map(_.getAbsolutePath).sortWith(_ < _)
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run compile sortedSourceFiles
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processUnreportedWarnings(run)
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dreporter.problems foreach { p => callback.problem(p.category, p.position, p.message, p.severity, true) }
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}
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dreporter.printSummary()
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if(!noErrors(dreporter)) handleErrors(dreporter, log)
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// the case where we cancelled compilation _after_ some compilation errors got reported
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// will be handled by line above so errors still will be reported properly just potentially not
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// all of them (because we cancelled the compilation)
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if (dreporter.cancelled) handleCompilationCancellation(dreporter, log)
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}
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def handleErrors(dreporter: DelegatingReporter, log: Logger): Nothing =
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{
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debug(log, "Compilation failed (CompilerInterface)")
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throw new InterfaceCompileFailed(args, dreporter.problems, "Compilation failed")
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}
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def handleCompilationCancellation(dreporter: DelegatingReporter, log: Logger): Nothing = {
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assert(dreporter.cancelled, "We should get here only if when compilation got cancelled")
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debug(log, "Compilation cancelled (CompilerInterface)")
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throw new InterfaceCompileCancelled(args, "Compilation has been cancelled")
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}
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def processUnreportedWarnings(run: compiler.Run)
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{
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// allConditionalWarnings and the ConditionalWarning class are only in 2.10+
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final class CondWarnCompat(val what: String, val warnings: mutable.ListBuffer[(compiler.Position, String)])
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implicit def compat(run: AnyRef): Compat = new Compat
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final class Compat { def allConditionalWarnings = List[CondWarnCompat]() }
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val warnings = run.allConditionalWarnings
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if(!warnings.isEmpty)
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compiler.logUnreportedWarnings(warnings.map(cw => ("" /*cw.what*/, cw.warnings.toList)))
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}
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val compiler: Compiler = {
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if (command.settings.Yrangepos.value)
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new Compiler() with RangePositions // unnecessary in 2.11
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else
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new Compiler()
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}
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class Compiler extends CallbackGlobal(command.settings, dreporter, output)
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{
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object dummy // temporary fix for #4426
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object sbtAnalyzer extends
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{
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val global: Compiler.this.type = Compiler.this
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val phaseName = Analyzer.name
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val runsAfter = List("jvm")
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override val runsBefore = List("terminal")
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val runsRightAfter = None
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}
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with SubComponent
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{
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val analyzer = new Analyzer(global)
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def newPhase(prev: Phase) = analyzer.newPhase(prev)
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def name = phaseName
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}
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/** This phase walks trees and constructs a representation of the public API, which is used for incremental recompilation.
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*
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* We extract the api after picklers, since that way we see the same symbol information/structure
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* irrespective of whether we were typechecking from source / unpickling previously compiled classes.
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*/
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object apiExtractor extends
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{
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val global: Compiler.this.type = Compiler.this
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val phaseName = API.name
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val runsAfter = List("typer")
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override val runsBefore = List("erasure")
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// allow apiExtractor's phase to be overridden using the sbt.api.phase property
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// (in case someone would like the old timing, which was right after typer)
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// TODO: consider migrating to simply specifying "pickler" for `runsAfter` and "uncurry" for `runsBefore`
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val runsRightAfter = Option(System.getProperty("sbt.api.phase")) orElse Some("pickler")
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}
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with SubComponent
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{
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val api = new API(global)
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def newPhase(prev: Phase) = api.newPhase(prev)
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def name = phaseName
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}
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override lazy val phaseDescriptors =
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{
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phasesSet += sbtAnalyzer
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phasesSet += apiExtractor
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superComputePhaseDescriptors
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}
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// Required because computePhaseDescriptors is private in 2.8 (changed to protected sometime later).
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private[this] def superComputePhaseDescriptors() = superCall("computePhaseDescriptors").asInstanceOf[List[SubComponent]]
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private[this] def superDropRun(): Unit =
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try { superCall("dropRun") } catch { case e: NoSuchMethodException => () } // dropRun not in 2.8.1
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private[this] def superCall(methodName: String): AnyRef =
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{
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val meth = classOf[Global].getDeclaredMethod(methodName)
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meth.setAccessible(true)
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meth.invoke(this)
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}
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def logUnreportedWarnings(seq: Seq[(String, List[(Position,String)])]): Unit = // Scala 2.10.x and later
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{
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val drep = reporter.asInstanceOf[DelegatingReporter]
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for( (what, warnings) <- seq; (pos, msg) <- warnings) yield
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callback.problem(what, drep.convert(pos), msg, Severity.Warn, false)
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}
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def set(callback: AnalysisCallback, dreporter: DelegatingReporter)
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{
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this.callback0 = callback
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reporter = dreporter
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}
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def clear()
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{
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callback0 = null
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superDropRun()
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reporter = null
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}
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def findClass(name: String): Option[(AbstractFile, Boolean)] =
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getOutputClass(name).map(f => (f,true)) orElse findOnClassPath(name).map(f =>(f, false))
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def getOutputClass(name: String): Option[AbstractFile] =
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{
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// This could be improved if a hint where to look is given.
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val className = name.replace('.', '/') + ".class"
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outputDirs map (new File(_, className)) find (_.exists) map (AbstractFile.getFile(_))
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}
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def findOnClassPath(name: String): Option[AbstractFile] =
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classPath.findClass(name).flatMap(_.binary.asInstanceOf[Option[AbstractFile]])
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private[this] var callback0: AnalysisCallback = null
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def callback: AnalysisCallback = callback0
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}
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}
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