Support instantiation of Java annotations with defaults

For annotations defined in Java, IrProperties do not contain initializers in backing fields,
as annotation properties are represented as Java methods.
Therefore, it is not possible to use initializer values as default values for constructor parameters.

However, K2 stores default values in annotation's constructor parameters,
so it is possible to fix this issue if they're properly transfered to the IR
and inspected in JvmAnnotationImplementationTransformer

#KT-47702 Fixed
#KT-47702 tag fixed-in-k2
This commit is contained in:
Leonid Startsev
2023-07-26 18:44:14 +02:00
committed by Space Team
parent cc2bc5e8b1
commit 7f795f212f
16 changed files with 239 additions and 41 deletions
@@ -20,12 +20,6 @@ public @interface C {
String v2();
}
// FILE: D.java
public @interface D {
String value() default "hello";
}
// FILE: b.kt
fun box(): String {
@@ -34,10 +28,5 @@ fun box(): String {
assert(b.value == "OK")
val c = C(v2 = "v2", v1 = intArrayOf(1))
assert(c.v2 == "v2")
// TODO(KT-47702): Looks like we have to force users either to pass default java parameters explicitly
// or hack LazyJavaClassDescriptor/JavaPropertyDescriptor to load annotation param default value,
// because it is not stored currently anywhere.
// val d = D()
val d = D("OK").value
return d
return "OK"
}