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package dotty.tools
package dotc
import core._
import Contexts._, Periods._, Symbols._, Phases._, Decorators._
import dotty.tools.dotc.transform.TreeTransforms.TreeTransformer
import io.PlainFile
import util.{SourceFile, NoSource, Stats, SimpleMap}
import reporting.Reporter
import transform.TreeChecker
import java.io.{BufferedWriter, OutputStreamWriter}
import scala.reflect.io.VirtualFile
class Run(comp: Compiler)(implicit ctx: Context) {
assert(comp.phases.last.last.id <= Periods.MaxPossiblePhaseId)
assert(ctx.runId <= Periods.MaxPossibleRunId)
var units: List[CompilationUnit] = _
def getSource(fileName: String): SourceFile = {
val f = new PlainFile(fileName)
if (f.exists) new SourceFile(f)
else {
ctx.error(s"not found: $fileName")
NoSource
}
}
def compile(fileNames: List[String]): Unit = {
val sources = fileNames map getSource
compileSources(sources)
}
/** TODO: There's a fundamental design problem here: We assmble phases using `squash`
* when we first build the compiler. But we modify them with -Yskip, -Ystop
* on each run. That modification needs to either trasnform the tree structure,
* or we need to assmeble phases on each run, and take -Yskip, -Ystop into
* account. I think the latter would be preferable.
*/
def compileSources(sources: List[SourceFile]) = Stats.monitorHeartBeat {
if (sources forall (_.exists)) {
units = sources map (new CompilationUnit(_))
def stoppedBefore(phase: Phase) =
ctx.settings.YstopBefore.value.containsPhase(phase) ||
ctx.settings.YstopAfter.value.containsPhase(phase.prev)
val phasesToRun = ctx.allPhases.init
.takeWhile(!stoppedBefore(_))
.filterNot(ctx.settings.Yskip.value.containsPhase(_)) // TODO: skip only subphase
for (phase <- phasesToRun)
if (!ctx.reporter.hasErrors) {
if (ctx.settings.verbose.value) println(s"[$phase]")
units = phase.runOn(units)
def foreachUnit(op: Context => Unit)(implicit ctx: Context): Unit =
for (unit <- units) op(ctx.fresh.setPhase(phase.next).setCompilationUnit(unit))
if (ctx.settings.Xprint.value.containsPhase(phase))
foreachUnit(printTree)
if (ctx.settings.Ycheck.value.containsPhase(phase) && !ctx.reporter.hasErrors) {
assert(phase.isCheckable, s"phase $phase is not checkable")
foreachUnit(TreeChecker.check(phasesToRun, _))
}
}
}
}
private def printTree(ctx: Context) = {
val unit = ctx.compilationUnit
val prevPhase = ctx.phase.prev // can be a mini-phase
val squahsedPhase = ctx.squashed(prevPhase)
println(s"result of $unit after ${squahsedPhase}:")
println(unit.tpdTree.show(ctx))
}
def compile(sourceCode: String): Unit = {
val virtualFile = new VirtualFile(sourceCode) // use source code as name as it's used for equals
val writer = new BufferedWriter(new OutputStreamWriter(virtualFile.output, "UTF-8")) // buffering is still advised by javadoc
writer.write(sourceCode)
writer.close()
compileSources(List(new SourceFile(virtualFile)))
}
/** Print summary; return # of errors encountered */
def printSummary(): Reporter = {
ctx.runInfo.printMaxConstraint()
val r = ctx.typerState.reporter
r.printSummary
r
}
}
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