Detect and report inner classes capturing script instance

compiler/testData/codegen/script/scriptInstanceCapturing/classCapturesProperty.kts

@@ -5,7 +5,7 @@
 // KT-19423
 val used = "abc"
 class User {
-    val property = used // error: Expression is inaccessible from a nested class
+    val property = used
 }
 
 val rv = User().property

compiler/testData/codegen/script/scriptInstanceCapturing/innerClassesHierarchyCaptureProperty.kts

@@ -0,0 +1,15 @@
+// IGNORE_BACKEND: JS, JS_IR, JS_IR_ES6, NATIVE, WASM
+
+// expected: rv: abcabc
+
+// KT-19423 variation
+val used = "abc"
+
+inner class Outer {
+    val middle = used
+    inner class User {
+        val property = used
+    }
+}
+
+val rv = Outer().User().property + Outer().middle

compiler/testData/codegen/script/scriptInstanceCapturing/nestedAndOuterClassesCaptureProperty.kts

@@ -0,0 +1,16 @@
+// IGNORE_BACKEND: JS, JS_IR, JS_IR_ES6, NATIVE, WASM
+// IGNORE_BACKEND: JVM, JVM_IR
+
+// expected: rv: abcabc
+
+// KT-19423 variation
+val used = "abc"
+
+class Outer {
+    val middle = used
+    class User {
+        val property = used
+    }
+}
+
+val rv = Outer.User().property + Outer().middle

compiler/testData/codegen/script/scriptInstanceCapturing/nestedClassCapturesProperty.kts

@@ -0,0 +1,15 @@
+// IGNORE_BACKEND: JS, JS_IR, JS_IR_ES6, NATIVE, WASM
+// IGNORE_BACKEND: JVM, JVM_IR
+
+// expected: rv: abc
+
+// KT-19423 variation
+val used = "abc"
+
+class Outer {
+    class User {
+        val property = used
+    }
+}
+
+val rv = Outer.User().property

compiler/testData/codegen/script/scriptInstanceCapturing/nestedInnerClassCapturesProperty.kts

@@ -0,0 +1,15 @@
+// IGNORE_BACKEND: JS, JS_IR, JS_IR_ES6, NATIVE, WASM
+
+// expected: rv: abc!
+
+// KT-19423 variation
+val used = "abc"
+
+class Outer {
+    val bang = "!"
+    inner class User {
+        val property = used + bang
+    }
+}
+
+val rv = Outer().User().property

compiler/testData/codegen/script/scriptInstanceCapturing/nestedToObjectClassCapturesProperty.kts

@@ -0,0 +1,15 @@
+// IGNORE_BACKEND: JS, JS_IR, JS_IR_ES6, NATIVE, WASM
+// IGNORE_BACKEND: JVM, JVM_IR
+
+// expected: rv: abc
+
+// KT-19423 variation
+val used = "abc"
+
+object Outer {
+    class User {
+        val property = used
+    }
+}
+
+val rv = Outer.User().property

compiler/testData/diagnostics/testsWithJvmBackend/scripts/nestedAndOuterClassesCaptureProperty.kts

@@ -0,0 +1,12 @@
+// !RENDER_DIAGNOSTICS_FULL_TEXT
+// TARGET_BACKEND: JVM_IR
+
+// KT-19423 variation
+val used = "abc"
+
+class Outer {
+    val middle = used
+    <!SCRIPT_CAPTURING_NESTED_CLASS!>class User {
+        val property = used
+    }<!>
+}

compiler/testData/diagnostics/testsWithJvmBackend/scripts/nestedAndOuterClassesCaptureProperty.txt

@@ -0,0 +1,26 @@
+package
+
+public final class NestedAndOuterClassesCaptureProperty : kotlin.script.templates.standard.ScriptTemplateWithArgs {
+    public constructor NestedAndOuterClassesCaptureProperty(/*0*/ args: kotlin.Array<kotlin.String>)
+    public final override /*1*/ /*fake_override*/ val args: kotlin.Array<kotlin.String>
+    public final val used: kotlin.String = "abc"
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    public final class Outer {
+        public constructor Outer()
+        public final val middle: kotlin.String = "abc"
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+        public final class User {
+            public constructor User()
+            public final val property: kotlin.String = "abc"
+            public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+            public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+            public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+        }
+    }
+}

compiler/testData/diagnostics/testsWithJvmBackend/scripts/nestedClassCapturesProperty.kts

@@ -0,0 +1,11 @@
+// !RENDER_DIAGNOSTICS_FULL_TEXT
+// TARGET_BACKEND: JVM_IR
+
+// KT-19423 variation
+val used = "abc"
+
+class Outer {
+    <!SCRIPT_CAPTURING_NESTED_CLASS!>class User {
+        val property = used
+    }<!>
+}

compiler/testData/diagnostics/testsWithJvmBackend/scripts/nestedClassCapturesProperty.txt

@@ -0,0 +1,25 @@
+package
+
+public final class NestedClassCapturesProperty : kotlin.script.templates.standard.ScriptTemplateWithArgs {
+    public constructor NestedClassCapturesProperty(/*0*/ args: kotlin.Array<kotlin.String>)
+    public final override /*1*/ /*fake_override*/ val args: kotlin.Array<kotlin.String>
+    public final val used: kotlin.String = "abc"
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    public final class Outer {
+        public constructor Outer()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+        public final class User {
+            public constructor User()
+            public final val property: kotlin.String = "abc"
+            public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+            public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+            public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+        }
+    }
+}

compiler/testData/diagnostics/testsWithJvmBackend/scripts/nestedToObjectClassCapturesProperty.kts

@@ -0,0 +1,11 @@
+// !RENDER_DIAGNOSTICS_FULL_TEXT
+// TARGET_BACKEND: JVM_IR
+
+// KT-19423 variation
+val used = "abc"
+
+object Outer {
+    <!SCRIPT_CAPTURING_NESTED_CLASS!>class User {
+        val property = used
+    }<!>
+}

compiler/testData/diagnostics/testsWithJvmBackend/scripts/nestedToObjectClassCapturesProperty.txt

@@ -0,0 +1,25 @@
+package
+
+public final class NestedToObjectClassCapturesProperty : kotlin.script.templates.standard.ScriptTemplateWithArgs {
+    public constructor NestedToObjectClassCapturesProperty(/*0*/ args: kotlin.Array<kotlin.String>)
+    public final override /*1*/ /*fake_override*/ val args: kotlin.Array<kotlin.String>
+    public final val used: kotlin.String = "abc"
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    public object Outer {
+        private constructor Outer()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+        public final class User {
+            public constructor User()
+            public final val property: kotlin.String = "abc"
+            public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+            public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+            public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+        }
+    }
+}