KaSymbol

TOP_LEVEL

A declaration placed directly in a file, or in a script.

CLASS

A member of some class, object, or interface.

PROPERTY

A part of some property declaration (e.g., an accessor or a backing field).

LOCAL

A declaration inside some callable declaration body.

SOURCE

A declaration directly written in Kotlin source code.

Examples: Classes, functions, properties, and other declarations defined in Kotlin source files.

SOURCE_MEMBER_GENERATED

A declaration automatically generated by the Kotlin compiler as a member of another declaration.

Examples:

• Default constructors of classes.

• copy(), componentN(), and other synthetic functions for data classes.

• values() and valueOf() functions for enum classes.

• Implicit it parameter for lambda expressions with a single parameter.

LIBRARY

A declaration from a compiled Kotlin library (.jar or .klib file).

Examples: Classes, functions, properties, and other declarations defined in Kotlin source files.

JAVA_SOURCE

A declaration from Java source code.

Examples: Classes, methods, and fields defined in Java source files.

JAVA_LIBRARY

A declaration from a compiled Java library.

Examples: Classes, methods, and fields from Java libraries, or from the JDK.

SAM_CONSTRUCTOR

A synthetic function generated by the SAM (Single Abstract Method) conversion. This occurs when a lambda expression is passed as an argument where a functional interface is expected.

Example:

val runnable = Runnable {
    println("Hello")
}

In this case, the lambda expression is converted to a synthetic function that implements the Runnable interface.

INTERSECTION_OVERRIDE

A synthetic declaration automatically created by the Kotlin compiler for callable intersections.

Example:

interface A { fun x() }
interface B { fun x() }
interface C : A, B

In C, there appears the function C.foo, an intersection of A.foo and B.foo, with the INTERSECTION_OVERRIDE origin.

SUBSTITUTION_OVERRIDE

A synthetic declaration automatically created by the Kotlin compiler for callable type substitutions.

Example:

interface A<T> { fun x(): T }
interface B : A<Int>

Interface B will have a member B.foo(): Int with a substituted return type with the SUBSTITUTION_OVERRIDE origin.

DELEGATED

A member generated by the compiler for interface delegation. This occurs when a class delegates the implementation of an interface to another object.

Example:

interface MyInterface {
    fun perform()
}

class MyClass(private val delegate: MyInterface) : MyInterface by delegate

The compiler generates a member function perform() in MyClass that calls the perform() function from delegate.

JAVA_SYNTHETIC_PROPERTY

A synthetic property generated by the compiler for a Java field with a getter or setter. This allows Java fields to be accessed like Kotlin properties.

Example:

public class JavaClass {
    private int field;

    public int getField() {
        return field;
    }

    public void setField(int field) {
        this.field = field;
    }
}

The compiler generates a synthetic property field with a getter and setter based on the Java methods getField() and setField().

PROPERTY_BACKING_FIELD

A backing field of a property declaration (a field that stores the value of the property).

Example:

class MyClass {
    var property: Int = 0
        get() = field
        set(value) { field = value }
}

The field identifier in the getter and setter refers to the backing field of the property.

PLUGIN

A declaration generated by a compiler plugin.

JS_DYNAMIC

A declaration from a dynamic Kotlin/JS scope.

NATIVE_FORWARD_DECLARATION

A Kotlin/Native forward declaration. See the forward declarations section in the Kotlin documentation.