rules/common.pro

# Keep `Companion` object fields of serializable classes.
# This avoids serializer lookup through `getDeclaredClasses` as done for named companion objects.
-if @kotlinx.serialization.Serializable class **
-keepclassmembers class <1> {
    static <1>$* Companion;
}

# Keep names for named companion object from obfuscation
# Names of a class and of a field are important in lookup of named companion in runtime
-keepnames @kotlinx.serialization.internal.NamedCompanion class *
-if @kotlinx.serialization.internal.NamedCompanion class *
-keepclassmembernames class * {
    static <1> *;
}

# Keep `serializer()` on companion objects (both default and named) of serializable classes.
-if @kotlinx.serialization.Serializable class ** {
    static **$* *;
}
-keepclassmembers class <2>$<3> {
    kotlinx.serialization.KSerializer serializer(...);
}

# Keep `INSTANCE.serializer()` of serializable objects.
-if @kotlinx.serialization.Serializable class ** {
    public static ** INSTANCE;
}
-keepclassmembers class <1> {
    public static <1> INSTANCE;
    kotlinx.serialization.KSerializer serializer(...);
}

# @Serializable and @Polymorphic are used at runtime for polymorphic serialization.
-keepattributes RuntimeVisibleAnnotations,AnnotationDefault

# Don't print notes about potential mistakes or omissions in the configuration for kotlinx-serialization classes
# See also https://github.com/Kotlin/kotlinx.serialization/issues/1900
-dontnote kotlinx.serialization.**

# Serialization core uses `java.lang.ClassValue` for caching inside these specified classes.
# If there is no `java.lang.ClassValue` (for example, in Android), then R8/ProGuard will print a warning.
# However, since in this case they will not be used, we can disable these warnings
-dontwarn kotlinx.serialization.internal.ClassValueReferences

# disable optimisation for descriptor field because in some versions of ProGuard, optimization generates incorrect bytecode that causes a verification error
# see https://github.com/Kotlin/kotlinx.serialization/issues/2719
-keepclassmembers public class **$$serializer {
    private ** descriptor;
}