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package scala.runtime;
import java.lang.invoke.*;
import java.lang.ref.SoftReference;
import java.lang.reflect.Method;
public final class StructuralCallSite {
private Class<?>[] parameterTypes;
private SoftReference<MethodCache> cache = new SoftReference<>(new EmptyMethodCache());
private StructuralCallSite(MethodType callType) {
parameterTypes = callType.parameterArray();
}
public MethodCache get() {
MethodCache cache = this.cache.get();
if (cache == null) {
cache = new EmptyMethodCache();
this.cache = new SoftReference<>(cache);
}
return cache;
}
public Method find(Class<?> receiver) {
return get().find(receiver);
}
public Method add(Class<?> receiver, Method m) {
cache = new SoftReference<MethodCache>(get().add(receiver, m));
return m;
}
public Class<?>[] parameterTypes() {
return parameterTypes;
}
public static CallSite bootstrap(MethodHandles.Lookup lookup, String invokedName,
MethodType invokedType, MethodType reflectiveCallType) throws Throwable {
StructuralCallSite structuralCallSite = new StructuralCallSite(reflectiveCallType);
return new ConstantCallSite(MethodHandles.constant(StructuralCallSite.class, structuralCallSite));
}
}
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