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package Torello.Java.Additional;

import Torello.Java.ReadOnly.ReadOnlyList;

import java.util.stream.Stream;

class AllNames 
{
    @SuppressWarnings("unchecked")
    static Stream<String> getAllFieldNames(
            final ReadOnlyList<Integer> allFieldReferences,
            final ReadOnlyList<Object>  values
        )
    {
        return allFieldReferences

            // Begins as a Torello.Java.ReadOnly.ReadOnlyList<Integer> of Constant-Table Indices
            // Convert the List into a Standard Java Stream<Integer>

            .stream()


            // Stream<Ret2<Integer, Integer>> : a Stream of Field-References
            // (pair of Table-Indices).
            // 
            // Index-1: Constant-Table Index/Pointer to the Owner/Definer Class of a Field
            // Index-2: Table Pointer/Index to a "Name-And-Type".  This is a Pair of Integers.
            //          The Integer-Index-Pair points to the name and the type of the Field

            .map((Integer n) -> (Ret2<Integer, Integer>) values.get(n))


            // Stream<Ret2<Integer, Integer>> : a Stream of Name-And-Type References
            // (another pair of Table-Indices)
            // 
            // Index-1: Table Pointer to a UTF-8 Constant-Table Entry that contains a UTF-8
            //          Character-Byte Array (a simple string).  This is the "Name" of the Field.
            // Index-2: A Pointer to a Class-Constant.  Not used in this method

            .map((Ret2<Integer, Integer> r2) -> (Ret2<Integer, Integer>) values.get(r2.b))


            // Stream<Integer> : The UTF-8 Constant-Table Locations
            .map((Ret2<Integer, Integer> r2) -> r2.a)
            .sorted()
            .distinct()


            // Stream<String> : a Stream of the Field-Names!
            .map((Integer i) -> (String) values.get(i))
            .sorted()
            .distinct();
    }

    @SuppressWarnings("unchecked")
    static Stream<String> getAllMethodNames(
            final ReadOnlyList<Integer> allMethodReferences,
            final ReadOnlyList<Integer> allInterfaceMethodReferences,
            final ReadOnlyList<Object>  values
        )
    {
        // Concatenate all "Method-References" with all "Interface Method-References"
        // Afterwards, follow the exact same steps that were followed for "Fields"

        return Stream
            .concat(
                allMethodReferences.stream(),
                allInterfaceMethodReferences.stream()
            )
            .sorted()   // Because two lists were merged, a sort helps a little
            .distinct() // Many methods have both "Method-Ref" and an "Interface-Method-Ref"

            // This stuff here, is the identical code that is done inside "getAllFieldNames"
            .map((Integer n)                    -> (Ret2<Integer, Integer>) values.get(n))
            .map((Ret2<Integer, Integer> r2)    -> (Ret2<Integer, Integer>) values.get(r2.b))
            .map((Ret2<Integer, Integer> r2)    -> (String) values.get(r2.a))
            .sorted()
            .distinct();
    }
}