diff options
Diffstat (limited to 'src/compiler/scala/tools/nsc/Global.scala')
| -rw-r--r-- | src/compiler/scala/tools/nsc/Global.scala | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/compiler/scala/tools/nsc/Global.scala b/src/compiler/scala/tools/nsc/Global.scala index 40d8bd5c82..2e2f9c1ad7 100644 --- a/src/compiler/scala/tools/nsc/Global.scala +++ b/src/compiler/scala/tools/nsc/Global.scala @@ -661,8 +661,21 @@ class Global(var settings: Settings, var reporter: Reporter) extends SymbolTable /** To be initialized from firstPhase. */ private var terminalPhase: Phase = NoPhase - /** Whether compilation should stop at or skip the phase with given name. */ - protected def stopPhase(name: String) = settings.stop contains name + // Calculate where to stop based on settings -Ystop-before or -Ystop-after. + // Slightly complicated logic due to wanting -Ystop-before:parser to fail rather + // than mysteriously running to completion. + private lazy val stopPhaseSetting = { + val result = phaseDescriptors sliding 2 collectFirst { + case xs if xs exists (settings.stopBefore contains _.phaseName) => if (settings.stopBefore contains xs.head.phaseName) xs.head else xs.last + case xs if settings.stopAfter contains xs.head.phaseName => xs.last + } + if (result exists (_.phaseName == "parser")) + globalError("Cannot stop before parser phase.") + + result + } + // The phase to stop BEFORE running. + protected def stopPhase(name: String) = stopPhaseSetting exists (_.phaseName == name) protected def skipPhase(name: String) = settings.skip contains name /** As definitions.init requires phase != NoPhase, and calling phaseDescriptors.head |