Debugger: Log evaluation status from Java contexts

IntelliJ doesn't call KotlinDebuggerEvaluator from Java contexts; instead, it calls JavaDebuggerEvaluator.
Unfortunately, there seems to be no way to figure out the exact evaluation type for Java contexts. However, we can at least log the evaluation status itself.

idea/jvm-debugger/jvm-debugger-evaluation/src/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinCodeFragmentFactory.kt

@@ -18,6 +18,7 @@ package org.jetbrains.kotlin.idea.debugger.evaluate
 
 import com.intellij.debugger.DebuggerManagerEx
 import com.intellij.debugger.engine.DebugProcessImpl
+import com.intellij.debugger.engine.JavaDebuggerEvaluator
 import com.intellij.debugger.engine.evaluation.CodeFragmentFactory
 import com.intellij.debugger.engine.evaluation.TextWithImports
 import com.intellij.debugger.engine.events.DebuggerCommandImpl
@@ -146,10 +147,16 @@ class KotlinCodeFragmentFactory : CodeFragmentFactory() {
 
         DebugLabelPropertyDescriptorProvider(codeFragment, debugProcess).supplyDebugLabels()
 
+        @Suppress("MoveVariableDeclarationIntoWhen")
         val evaluator = debugProcess.session.xDebugSession?.currentStackFrame?.evaluator
-        if (evaluator is KotlinDebuggerEvaluator) {
-            codeFragment.putUserData(EVALUATION_TYPE, evaluator.getType(item))
+
+        val evaluationType = when (evaluator) {
+            is KotlinDebuggerEvaluator -> evaluator.getType(item)
+            is JavaDebuggerEvaluator -> KotlinDebuggerEvaluator.EvaluationType.FROM_JAVA
+            else -> KotlinDebuggerEvaluator.EvaluationType.UNKNOWN
         }
+
+        codeFragment.putUserData(EVALUATION_TYPE, evaluationType)
     }
 
     private fun getDebugProcess(project: Project, context: PsiElement?): DebugProcessImpl? {

idea/jvm-debugger/jvm-debugger-util/src/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinDebuggerEvaluator.kt

@@ -72,6 +72,7 @@ class KotlinDebuggerEvaluator(
         WATCH(WatchNodeImpl::class.java),
         WINDOW(EvaluatingExpressionRootNode::class.java),
         POPUP(XValueHint::class.java),
+        FROM_JAVA(null),
         UNKNOWN(null);
     }
 }