Redundant 'inner' modifier

Reports the inner modifier on a class as redundant if it doesn't reference members of its outer class.

Example:

class Foo {
    inner class InnerClass { // redundant `inner` modifier
        fun hello() {
            println("Hi!")
        }
    }
}

class List {
    val objects = Array<Any>(42) { Any() }

    inner class Iterator { // Not redundant `inner` modifier
        fun next(): Any {
            return objects[0]
        }
    }
}

After the quick-fix is applied:

class Foo {
    class InnerClass { // redundant `inner` modifier
        fun hello() {
            println("Hi!")
        }
    }
}

class List {
    val objects = Array<Any>(42) { Any() }

    inner class Iterator { // Not redundant `inner` modifier
        fun next(): Any {
            return objects[0]
        }
    }
}

Inspection options

Option	Type	Default
Ignore if annotated by	StringList	[org.junit.jupiter.api.Nested]

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Kotlin, @snapshot@

Last modified: 13 July 2023