Better compiler entry points

- Document the entry points
- It is now possible to set a custom reporter without using a custom
  context
- Use `null` for optional arguments to make it easier to run the
  compiler using reflection or from Java.
- DPDirectCompiler does not use a custom context anymore

1 files changed, 1 insertions, 0 deletions

diff --git a/src/dotty/tools/dotc/core/Contexts.scala b/src/dotty/tools/dotc/core/Contexts.scala
index 14e8ccb52..f7af6f43e 100644
--- a/src/dotty/tools/dotc/core/Contexts.scala
+++ b/src/dotty/tools/dotc/core/Contexts.scala
@@ -427,6 +427,7 @@ object Contexts {
     def setPeriod(period: Period): this.type = { this.period = period; this }
     def setMode(mode: Mode): this.type = { this.mode = mode; this }
     def setTyperState(typerState: TyperState): this.type = { this.typerState = typerState; this }
+    def setReporter(reporter: Reporter): this.type = setTyperState(typerState.withReporter(reporter))
     def setNewTyperState: this.type = setTyperState(typerState.fresh(isCommittable = true))
     def setExploreTyperState: this.type = setTyperState(typerState.fresh(isCommittable = false))
     def setPrinterFn(printer: Context => Printer): this.type = { this.printerFn = printer; this }