Fir2Ir scripts: fix declarations registration and processing

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrConverter.kt

@@ -217,7 +217,8 @@ class Fir2IrConverter(
 
     internal fun processRegularClassMembers(
         regularClass: FirRegularClass,
-        irClass: IrClass = classifierStorage.getCachedIrClass(regularClass)!!
+        irClass: IrClass =
+            classifierStorage.getCachedIrClass(regularClass) ?: error("Expecting existing IrClass for class ${regularClass.name}")
     ): IrClass {
         val allDeclarations = mutableListOf<FirDeclaration>().apply {
             addAll(regularClass.declarations)
@@ -361,6 +362,16 @@ class Fir2IrConverter(
                 assert(parent is IrFile)
                 declarationStorage.getOrCreateIrScript(declaration).also { irScript ->
                     declarationStorage.enterScope(irScript)
+                    irScript.parent = parent
+                    for (scriptStatement in declaration.statements) {
+                        if (scriptStatement is FirDeclaration) {
+                            if (scriptStatement is FirRegularClass) {
+                                registerClassAndNestedClasses(scriptStatement, irScript)
+                                processClassAndNestedClassHeaders(scriptStatement)
+                            }
+
+                        }
+                    }
                     for (scriptStatement in declaration.statements) {
                         if (scriptStatement is FirDeclaration) {
                             processMemberDeclaration(scriptStatement, null, irScript)

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/providers/impl/FirProviderImpl.kt

@@ -184,6 +184,7 @@ class FirProviderImpl(val session: FirSession, val kotlinScopeProvider: FirKotli
         override fun visitScript(script: FirScript, data: FirRecorderData) {
             val symbol = script.symbol
             data.state.scriptContainerMap[symbol] = data.file
+            script.acceptChildren(this, data)
         }
     }
 

compiler/testData/codegen/script/localDelegatedProperty.kts

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_K2: JVM_IR
 
 import kotlin.reflect.KProperty
 

compiler/testData/codegen/script/localDelegatedPropertyNoExplicitType.kts

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_K2: JVM_IR
 
 import kotlin.reflect.KProperty
 

compiler/testData/codegen/script/simpleClass.kts

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_K2: JVM_IR
 
 class SimpleClass(val s: String) {
     fun foo() = s

compiler/testData/codegen/script/topLevelPropertyWithProvideDelegate.kts

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_K2: JVM_IR
 
 import kotlin.reflect.KProperty
 

compiler/testData/diagnostics/tests/script/NestedInnerClass.fir.kts

@@ -17,9 +17,9 @@ class Nested {
     val innerThisProp = this<!UNRESOLVED_LABEL!>@NestedInnerClass<!>.property
 
     inner class InnerInner {
-        fun f() = <!UNRESOLVED_REFERENCE!>innerFun<!>()
-        fun g() = <!UNRESOLVED_REFERENCE!>innerProp<!>
-        fun h() = this@Inner.<!UNRESOLVED_REFERENCE!>innerFun<!>()
-        fun i() = this@Inner.<!UNRESOLVED_REFERENCE!>innerProp<!>
+        fun f() = innerFun()
+        fun g() = innerProp
+        fun h() = this@Inner.innerFun()
+        fun i() = this@Inner.innerProp
     }
 }

compiler/testData/diagnostics/tests/script/destructuringDeclarationsScript.fir.kts

@@ -1,11 +1,11 @@
 // !WITH_NEW_INFERENCE
-val (a1, a2) = <!COMPONENT_FUNCTION_MISSING, COMPONENT_FUNCTION_MISSING!>A()<!>
-val (b1: Int, b2: Int) = <!COMPONENT_FUNCTION_MISSING, COMPONENT_FUNCTION_MISSING!>A()<!>
+val (a1, a2) = A()
+val (b1: Int, b2: Int) = A()
 val (c1) = <!COMPONENT_FUNCTION_MISSING, UNRESOLVED_REFERENCE!>unresolved<!>
 
-<!WRONG_MODIFIER_TARGET!>private<!> val (d1) = <!COMPONENT_FUNCTION_MISSING!>A()<!>
+<!WRONG_MODIFIER_TARGET!>private<!> val (d1) = A()
 
-val (e1, _) = <!COMPONENT_FUNCTION_MISSING!>A()<!>
+val (e1, _) = A()
 
 <!UNRESOLVED_REFERENCE!>a1<!>
 <!UNRESOLVED_REFERENCE!>a2<!>

compiler/testData/diagnostics/tests/script/resolveInitializerOfDestructuringDeclarationOnce.fir.kts

@@ -1,7 +0,0 @@
-val (a, b, c) = <!COMPONENT_FUNCTION_MISSING, COMPONENT_FUNCTION_MISSING, COMPONENT_FUNCTION_MISSING!>A<!NO_VALUE_FOR_PARAMETER!>()<!><!>
-
-class A(val a: Int) {
-    operator fun component1() {}
-    operator fun component2() {}
-    operator fun component3() {}
-}

compiler/testData/diagnostics/tests/script/resolveInitializerOfDestructuringDeclarationOnce.kts

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 val (a, b, c) = A<!NO_VALUE_FOR_PARAMETER!>()<!>
 
 class A(val a: Int) {

compiler/testData/diagnostics/tests/script/topLevelVariable.fir.kts

@@ -1,20 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE
-
-import kotlin.reflect.KProperty
-
-class Delegate {
-    operator fun getValue(t: Any?, p: KProperty<*>): Int {
-        return 1
-    }
-}
-
-val a: Int by <!DELEGATE_SPECIAL_FUNCTION_MISSING!>Delegate()<!>
-
-class Foo {
-    val a: Int by <!DELEGATE_SPECIAL_FUNCTION_MISSING!>Delegate()<!>
-}
-
-fun foo() {
-    val a: Int by <!DELEGATE_SPECIAL_FUNCTION_MISSING!>Delegate()<!>
-}
-

compiler/testData/diagnostics/tests/script/topLevelVariable.kts

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE
 
 import kotlin.reflect.KProperty