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package scala.runtime;
import java.lang.invoke.*;
import java.util.HashMap;
public final class LambdaDeserialize {
public static final MethodType DESERIALIZE_LAMBDA_MT = MethodType.fromMethodDescriptorString("(Ljava/lang/invoke/SerializedLambda;)Ljava/lang/Object;", LambdaDeserialize.class.getClassLoader());
private MethodHandles.Lookup lookup;
private final HashMap<String, MethodHandle> cache = new HashMap<>();
private final LambdaDeserializer$ l = LambdaDeserializer$.MODULE$;
private final HashMap<String, MethodHandle> targetMethodMap;
private LambdaDeserialize(MethodHandles.Lookup lookup, MethodHandle[] targetMethods) {
this.lookup = lookup;
targetMethodMap = new HashMap<>(targetMethods.length);
for (MethodHandle targetMethod : targetMethods) {
MethodHandleInfo info = lookup.revealDirect(targetMethod);
String key = nameAndDescriptorKey(info.getName(), info.getMethodType().toMethodDescriptorString());
targetMethodMap.put(key, targetMethod);
}
}
public Object deserializeLambda(SerializedLambda serialized) {
return l.deserializeLambda(lookup, cache, targetMethodMap, serialized);
}
public static CallSite bootstrap(MethodHandles.Lookup lookup, String invokedName,
MethodType invokedType, MethodHandle... targetMethods) throws Throwable {
MethodHandle deserializeLambda = lookup.findVirtual(LambdaDeserialize.class, "deserializeLambda", DESERIALIZE_LAMBDA_MT);
MethodHandle exact = deserializeLambda.bindTo(new LambdaDeserialize(lookup, targetMethods)).asType(invokedType);
return new ConstantCallSite(exact);
}
public static String nameAndDescriptorKey(String name, String descriptor) {
return name + descriptor;
}
}
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