Treat Boolean.False as false primitive (#6090)

Treat `Boolean.False` and `Boolean.True` as the corresponding primitives. Now, `Boolean.False == False` returns true.

# Important Notes
`False` and `True` constructs, that are converted to `ConstructorNode` during Truffle codegen, are handled specially in `ConstructorNode`. The easiest fix was to implement a similar special handling in `QualifiedAccessorNode`, although not the cleanest one.

A better solution would be to provide transformation of `Boolean.True` IR to a true literal in `ApplicationSaturation` compiler pass. But `ApplicationSaturation` pass does not handle `True`. Moreover, for our case, it is unnecessarily complicated.

engine/runtime/src/main/java/org/enso/interpreter/node/expression/atom/QualifiedAccessorNode.java

@@ -4,6 +4,7 @@ import com.oracle.truffle.api.TruffleLanguage;
 import com.oracle.truffle.api.frame.VirtualFrame;
 import com.oracle.truffle.api.nodes.NodeInfo;
 import com.oracle.truffle.api.nodes.RootNode;
+import org.enso.interpreter.runtime.EnsoContext;
 import org.enso.interpreter.runtime.callable.atom.AtomConstructor;
 
 @NodeInfo(
@@ -36,7 +37,16 @@ public class QualifiedAccessorNode extends RootNode {
    */
   public Object execute(VirtualFrame frame) {
     if (atomConstructor.getArity() == 0) {
-      return atomConstructor.newInstance();
+      var trueCtor = EnsoContext.get(this).getBuiltins().bool().getTrue();
+      var falseCtor = EnsoContext.get(this).getBuiltins().bool().getFalse();
+      // This matches the shortcuts provided in ConstructorNode
+      if (atomConstructor == trueCtor) {
+        return true;
+      } else if (atomConstructor == falseCtor) {
+        return false;
+      } else {
+        return atomConstructor.newInstance();
+      }
     } else {
       return atomConstructor;
     }

engine/runtime/src/test/scala/org/enso/std/test/BooleanTest.scala

@@ -9,15 +9,20 @@ class BooleanTest extends InterpreterTest {
     interpreterContext: InterpreterContext
   ): Unit = {
 
+    val defaultImports =
+      """
+        |from Standard.Base.Data.Boolean import all
+        |import Standard.Base.IO
+        |""".stripMargin
+
     "support if_then_else" in {
       val code =
-        """from Standard.Base.Data.Boolean import all
+        s"""$defaultImports
-          |import Standard.Base.IO
+           |
-          |
+           |main =
-          |main =
+           |    if True then IO.println "true when true" else IO.println "false when true"
-          |    if True then IO.println "true when true" else IO.println "false when true"
+           |    if False then IO.println "true when false" else IO.println "false when false"
-          |    if False then IO.println "true when false" else IO.println "false when false"
+           |""".stripMargin
-          |""".stripMargin
       eval(code)
       consumeOut shouldEqual List("true when true", "false when false")
     }
@@ -57,32 +62,55 @@ class BooleanTest extends InterpreterTest {
 
     "support logical AND and OR operators" in {
       val code =
-        """from Standard.Base.Data.Boolean import all
+        s"""$defaultImports
-          |import Standard.Base.IO
+           |
-          |
+           |main =
-          |main =
+           |    IO.println True&&False
-          |    IO.println True&&False
+           |    IO.println True&&True
-          |    IO.println True&&True
+           |    IO.println True&&Boolean.True
-          |    IO.println False||False
+           |    IO.println False||False
-          |    IO.println True||False
+           |    IO.println True||False
-          |    IO.println ((True && False) || (True && True))
+           |    IO.println ((True && False) || (True && True))
-          |""".stripMargin
+           |""".stripMargin
       eval(code)
-      consumeOut shouldEqual List("False", "True", "False", "True", "True")
+      consumeOut shouldEqual List(
+        "False",
+        "True",
+        "True",
+        "False",
+        "True",
+        "True"
+      )
     }
 
     "support negation" in {
       val code =
-        """from Standard.Base.Data.Boolean import all
+        s"""$defaultImports
-          |import Standard.Base.IO
+           |
-          |
+           |main =
-          |main =
+           |    IO.println True.not
-          |    IO.println True.not
+           |    IO.println Boolean.True.not
-          |    IO.println False.not
+           |    IO.println False.not
-          |    IO.println (1==2 . not)
+           |    IO.println Boolean.False.not
-          |""".stripMargin
+           |    IO.println (1==2 . not)
+           |""".stripMargin
       eval(code)
-      consumeOut shouldEqual List("False", "True", "True")
+      consumeOut shouldEqual List("False", "False", "True", "True", "True")
+    }
+
+    "literal equals atom constructor" in {
+      val code =
+        s"""$defaultImports
+           |
+           |main =
+           |    IO.println (False == Boolean.False)
+           |    IO.println (Boolean.False == False)
+           |    IO.println (True == Boolean.True)
+           |    IO.println (Boolean.True == True)
+           |
+           |""".stripMargin
+      eval(code)
+      consumeOut shouldEqual List("True", "True", "True", "True")
     }
   }
 }

project/DistributionPackage.scala

@@ -199,7 +199,7 @@ object DistributionPackage {
         path.globRecursive("*.enso").get().toSet
       ) { diff =>
         if (diff.modified.nonEmpty) {
-          println(s"Generating index for ${libName} ")
+          log.info(s"Generating index for $libName")
           val command = Seq(
             Platform.executableFileName(ensoExecutable.toString),
             "--no-compile-dependencies",