Change -Yemit-tasty to -Yemit-tasty-in-class and invert semantics

Author: nicolasstucki

compiler/src/dotty/tools/backend/jvm/GenBCode.scala

@@ -220,7 +220,7 @@ class GenBCodePipeline(val entryPoints: List[Symbol], val int: DottyBackendInter
           for (binary <- ctx.compilationUnit.pickled.get(claszSymbol.asClass)) {
             val store = if (mirrorC ne null) mirrorC else plainC
             val tasty =
-              if (ctx.settings.YemitTasty.value) {
+              if (!ctx.settings.YemitTastyInClass.value) {
                 val outTastyFile = getFileForClassfile(outF, store.name, ".tasty")
                 val outstream = new DataOutputStream(outTastyFile.bufferedOutput)
                 try outstream.write(binary)

compiler/src/dotty/tools/dotc/config/ScalaSettings.scala

@@ -89,7 +89,7 @@ class ScalaSettings extends Settings.SettingGroup {
   val YdebugNames = BooleanSetting("-Ydebug-names", "Show internal representation of names")
   val YtermConflict = ChoiceSetting("-Yresolve-term-conflict", "strategy", "Resolve term conflicts", List("package", "object", "error"), "error")
   val Ylog = PhasesSetting("-Ylog", "Log operations during")
-  val YemitTasty = BooleanSetting("-Yemit-tasty", "Generate tasty in separate *.tasty file.", true)
+  val YemitTastyInClass = BooleanSetting("-Yemit-tasty-in-class", "Generate tasty in the .class file and add an empty *.hasTasty file.")
   val YlogClasspath = BooleanSetting("-Ylog-classpath", "Output information about what classpath is being applied.")
   val YdisableFlatCpCaching  = BooleanSetting("-YdisableFlatCpCaching", "Do not cache flat classpath representation of classpath elements from jars across compiler instances.")
 

compiler/test/dotty/tools/dotc/CompilationTests.scala

@@ -102,7 +102,7 @@ class CompilationTests extends ParallelTesting {
     compileFilesInDir("tests/pos-no-optimise", defaultOptions) +
     compileFilesInDir("tests/pos-deep-subtype", allowDeepSubtypes) +
     compileFilesInDir("tests/pos-kind-polymorphism", defaultOptions and "-Ykind-polymorphism") +
-    compileDir("tests/pos/i1137-1", defaultOptions and "-Yemit-tasty") +
+    compileDir("tests/pos/i1137-1", defaultOptions) +
     compileFile(
       // succeeds despite -Xfatal-warnings because of -nowarn
       "tests/neg-custom-args/fatal-warnings/xfatalWarnings.scala",
@@ -257,7 +257,7 @@ class CompilationTests extends ParallelTesting {
       defaultOutputDir + dotty1Group + "/dotty/:" +
       // and the other compiler dependecies:
       Jars.dottyInterfaces + ":" + Jars.jline,
-      Array("-Ycheck-reentrant")
+      Array("-Ycheck-reentrant", "-Yemit-tasty-in-class")
     )
 
     val lib =

compiler/test/dotty/tools/dotc/IdempotencyTests.scala

@@ -28,7 +28,7 @@ class IdempotencyTests extends ParallelTesting {
   @Category(Array(classOf[SlowTests]))
   @Test def idempotency: Unit = {
     implicit val testGroup: TestGroup = TestGroup("idempotency")
-    val opt = defaultOptions.and("-Yemit-tasty")
+    val opt = defaultOptions
 
     def sourcesFrom(dir: Path) = CompilationTests.sources(Files.walk(dir))
 

project/scripts/cmdTests

@@ -47,7 +47,7 @@ grep -qe "$EXPECTED_OUTPUT" "$tmp"
 
 echo "testing loading tasty from .tasty file in jar"
 clear_out "$OUT"
-"$SBT" ";dotc -d $OUT/out.jar -Yemit-tasty $SOURCE; dotc -decompile -classpath $OUT/out.jar -color:never $MAIN" > "$tmp"
+"$SBT" ";dotc -d $OUT/out.jar $SOURCE; dotc -decompile -classpath $OUT/out.jar -color:never $MAIN" > "$tmp"
 grep -qe "def main(args: scala.Array\[scala.Predef.String\]): scala.Unit =" "$tmp"
 
 echo "testing scala.quoted.Expr.run from sbt dotr"