Generate accessor for private companion object

compiler/testData/codegen/box/objects/companionObjectAccess/privateCompanionObjectAccessedFromAnonymousObjectInNestedClass.kt

@@ -0,0 +1,17 @@
+// !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
+
+class Outer {
+    private companion object {
+        val result = "OK"
+    }
+
+    class Nested {
+        fun foo() = object {
+            override fun toString(): String = result
+        }
+    }
+
+    fun test() = Nested().foo().toString()
+}
+
+fun box() = Outer().test()

compiler/testData/codegen/box/objects/companionObjectAccess/privateCompanionObjectAccessedFromInlineLambdaInNestedClass.kt

@@ -0,0 +1,17 @@
+// !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
+
+inline fun <T> run(fn: () -> T) = fn()
+
+class Outer {
+    private companion object {
+        val result = "OK"
+    }
+
+    class Nested {
+        fun foo() = run { result }
+    }
+
+    fun test() = Nested().foo()
+}
+
+fun box() = Outer().test()

compiler/testData/codegen/box/objects/companionObjectAccess/privateCompanionObjectAccessedFromLambdaInNestedClass.kt

@@ -0,0 +1,15 @@
+// !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
+
+class Outer {
+    private companion object {
+        val result = "OK"
+    }
+
+    class Nested {
+        fun foo() = { result }()
+    }
+
+    fun test() = Nested().foo()
+}
+
+fun box() = Outer().test()

compiler/testData/codegen/box/objects/companionObjectAccess/privateCompanionObjectAccessedFromMethodInlinedInNestedClass.kt

@@ -0,0 +1,17 @@
+// !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
+
+class Outer {
+    private companion object {
+        val result = "OK"
+    }
+
+    private inline fun bar() = result
+
+    class Nested {
+        fun foo(x: Outer) = x.bar()
+    }
+
+    fun test() = Nested().foo(this)
+}
+
+fun box() = Outer().test()

compiler/testData/codegen/box/objects/companionObjectAccess/privateCompanionObjectAccessedFromNestedClass.kt

@@ -0,0 +1,15 @@
+// !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
+
+class Outer {
+    private companion object {
+        val result = "OK"
+    }
+
+    class Nested {
+        fun foo() = result
+    }
+
+    fun test() = Nested().foo()
+}
+
+fun box() = Outer().test()

compiler/testData/codegen/box/objects/companionObjectAccess/privateCompanionObjectAccessedFromNestedClassSeveralTimes.kt

@@ -0,0 +1,20 @@
+// !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
+
+class Outer {
+    private companion object {
+        fun xo() = "O"
+        fun xk() = "K"
+    }
+
+    class Nested1 {
+        fun foo() = xo()
+    }
+
+    class Nested2 {
+        fun bar() = xk()
+    }
+
+    fun test() = Nested1().foo() + Nested2().bar()
+}
+
+fun box() = Outer().test()

compiler/testData/codegen/box/objects/companionObjectAccess/privateCompanionObjectUsedInNestedClass.kt

@@ -0,0 +1,15 @@
+// !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
+
+class Outer {
+    private companion object {
+        override fun toString(): String = "OK"
+    }
+
+    class Nested {
+        fun foo(): Any = Outer.Companion
+    }
+
+    fun test() = Nested().foo().toString()
+}
+
+fun box() = Outer().test()

compiler/testData/codegen/box/objects/companionObjectAccess/protectedCompanionObjectAccessedFromNestedClass.kt

@@ -0,0 +1,15 @@
+// !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
+
+class Outer {
+    protected companion object {
+        val result = "OK"
+    }
+
+    class Nested {
+        fun foo() = result
+    }
+
+    fun test() = Nested().foo()
+}
+
+fun box() = Outer().test()