[FIR IDE] Initial FIR LightClass implementation

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/KtLightClassForSourceDeclaration.kt

@@ -550,11 +550,17 @@ fun KtClassOrObject.defaultJavaAncestorQualifiedName(): String? {
 }
 
 fun KtClassOrObject.shouldNotBeVisibleAsLightClass(): Boolean {
+
+    if (containingFile is KtCodeFragment) {
+        // Avoid building light classes for code fragments
+        return true
+    }
+
     if (parentsWithSelf.filterIsInstance<KtClassOrObject>().any { it.hasExpectModifier() }) {
         return true
     }
 
-    if (safeIsLocal()) {
+    if (isLocal) {
         if (containingFile.virtualFile == null) return true
         if (hasParseErrorsAround(this) || PsiUtilCore.hasErrorElementChild(this)) return true
     }

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/implUtils.kt

@@ -50,9 +50,9 @@ fun PsiReferenceList.addSuperTypeEntry(
     }
 }
 
-internal fun KtClassOrObject.getExternalDependencies(): List<ModificationTracker> {
+fun KtClassOrObject.getExternalDependencies(): List<ModificationTracker> {
     return with(KotlinModificationTrackerService.getInstance(project)) {
-        if (!safeIsLocal()) return listOf(outOfBlockModificationTracker)
+        if (!this@getExternalDependencies.isLocal) return listOf(outOfBlockModificationTracker)
         else when (val file = containingFile) {
             is KtFile -> listOf(outOfBlockModificationTracker, fileModificationTracker(file))
             else -> listOf(outOfBlockModificationTracker)

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightMethods.kt

@@ -32,13 +32,13 @@ import org.jetbrains.kotlin.resolve.DescriptorUtils
 import org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOriginKind
 import org.jetbrains.kotlin.types.RawType
 
-internal const val METHOD_INDEX_FOR_GETTER = 1
-internal const val METHOD_INDEX_FOR_SETTER = 2
-internal const val METHOD_INDEX_FOR_DEFAULT_CTOR = 3
-internal const val METHOD_INDEX_FOR_NO_ARG_OVERLOAD_CTOR = 4
-internal const val METHOD_INDEX_FOR_NON_ORIGIN_METHOD = 5
-internal const val METHOD_INDEX_FOR_SCRIPT_MAIN = 6
-internal const val METHOD_INDEX_BASE = 7
+const val METHOD_INDEX_FOR_GETTER = 1
+const val METHOD_INDEX_FOR_SETTER = 2
+const val METHOD_INDEX_FOR_DEFAULT_CTOR = 3
+const val METHOD_INDEX_FOR_NO_ARG_OVERLOAD_CTOR = 4
+const val METHOD_INDEX_FOR_NON_ORIGIN_METHOD = 5
+const val METHOD_INDEX_FOR_SCRIPT_MAIN = 6
+const val METHOD_INDEX_BASE = 7
 
 internal abstract class KtUltraLightMethod(
     internal val delegate: PsiMethod,

compiler/light-classes/src/org/jetbrains/kotlin/asJava/finder/JavaElementFinder.kt

@@ -26,7 +26,6 @@ import com.intellij.psi.util.PsiUtilCore
 import com.intellij.util.SmartList
 import com.intellij.util.containers.ContainerUtil
 import org.jetbrains.kotlin.asJava.KotlinAsJavaSupport
-import org.jetbrains.kotlin.asJava.toLightClass
 import org.jetbrains.kotlin.load.java.JvmAbi
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.isValidJavaFqName
@@ -73,7 +72,7 @@ class JavaElementFinder(
 
         for (declaration in classOrObjectDeclarations) {
             if (declaration !is KtEnumEntry) {
-                val lightClass = declaration.toLightClass()
+                val lightClass = kotlinAsJavaSupport.getLightClass(declaration)
                 if (lightClass != null) {
                     answer.add(lightClass)
                 }
@@ -90,7 +89,7 @@ class JavaElementFinder(
             ProgressIndicatorAndCompilationCanceledStatus.checkCanceled()
             //NOTE: can't filter out more interfaces right away because decompiled declarations do not have member bodies
             if (classOrObject is KtClass && classOrObject.isInterface()) {
-                val interfaceClass = classOrObject.toLightClass() ?: continue
+                val interfaceClass = kotlinAsJavaSupport.getLightClass(classOrObject) ?: continue
                 val implsClass = interfaceClass.findInnerClassByName(JvmAbi.DEFAULT_IMPLS_CLASS_NAME, false) ?: continue
                 answer.add(implsClass)
             }
@@ -141,7 +140,7 @@ class JavaElementFinder(
 
         val declarations = kotlinAsJavaSupport.findClassOrObjectDeclarationsInPackage(packageFQN, scope)
         for (declaration in declarations) {
-            val aClass = declaration.toLightClass() ?: continue
+            val aClass = kotlinAsJavaSupport.getLightClass(declaration) ?: continue
             answer.add(aClass)
         }