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Jython is an implementation of the high-level, dynamic, object-oriented language Python written in 100% Pure Java, and seamlessly integrated with the Java platform. It thus allows you to run Python on any Java platform.

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package org.python.modules.jffi;

import org.python.core.PyType;

public abstract class AbstractMemoryCData extends CData implements Pointer {
    protected DirectMemory memory;

    AbstractMemoryCData(PyType subtype, CType type, DirectMemory memory) {
        super(subtype, type);
        this.memory = memory;
    }
    @Override
    public boolean __nonzero__() {
        return !getMemory().isNull();
    }

    protected void initReferenceMemory(Memory m) {
        m.putAddress(0, memory);
    }

    public final DirectMemory getMemory() {
        return hasReferenceMemory() ? getReferenceMemory().getMemory(0) : memory;
    }
}