package vue;

// Native-backed emulation core implementation
class NativeVUE extends VUE {

    // Instance fields
    private byte[] pointer; // Context address in native memory



    ///////////////////////////////////////////////////////////////////////////
    //                             Constructors                              //
    ///////////////////////////////////////////////////////////////////////////

    // Default constructor
    NativeVUE() {
        construct();
    }



    ///////////////////////////////////////////////////////////////////////////
    //                            Public Methods                             //
    ///////////////////////////////////////////////////////////////////////////

    // Release any used resources
    public native void dispose();

    // Process the simulation
    public native int emulate(int maxCycles);

    // Retrieve the application break code
    public native int getBreakCode();

    // Retrieve a register value
    public native int getRegister(int index, boolean system);

    // Retrieve a copy of the ROM data
    public native byte[] getROM();

    // Determine whether the context is native-backed
    public native boolean isNative();

    // Read a value from the CPU bus
    public native int read(int address, int type);

    // Read bytes from the CPU bus
    public native boolean readBytes(int address, byte[] dest, int offset,
        int length);

    // Initialize all system components
    public native void reset();

    // Specify a register value
    public native int setRegister(int index, boolean system, int value);

    // Provide new ROM data
    public native boolean setROM(byte[] data, int offset, int length);

    // Write a value to the CPU bus
    public native void write(int address, int type, int value);

    // Write bytes to the CPU bus
    public native boolean writeBytes(int address, byte[] src, int offset,
        int length);



    ///////////////////////////////////////////////////////////////////////////
    //                            Private Methods                            //
    ///////////////////////////////////////////////////////////////////////////

    // Native constructor
    private native void construct();

}