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#include <libplugin/plugin.h>
#include <psi4-dec.h>
#include <libparallel/parallel.h>
#include <liboptions/liboptions.h>
#include <libmints/mints.h>
#include <libpsio/psio.hpp>

INIT_PLUGIN

using namespace boost;

namespace psi{ namespace @plugin@ {

class @Plugin@ : public Wavefunction
{
public:
    @Plugin@(boost::shared_ptr<Wavefunction> reference_wavefunction, Options& options);
    virtual ~@Plugin@();

    double compute_energy();

private:
    Dimension nvirtpi_;
    void common_init();
};

@Plugin@::@Plugin@(boost::shared_ptr<Wavefunction> reference_wavefunction, Options& options)
    : Wavefunction(options, _default_psio_lib_)
{
    Process::environment.set_wavefunction(reference_wavefunction);
    reference_wavefunction_ = reference_wavefunction;
    common_init();
}

@Plugin@::~@Plugin@()
{
}

void @Plugin@::common_init()
{
    nso_     = reference_wavefunction_->nso();
    nirrep_  = reference_wavefunction_->nirrep();
    nmo_     = reference_wavefunction_->nmo();
    soccpi_  = reference_wavefunction_->soccpi();
    doccpi_  = reference_wavefunction_->doccpi();
    frzcpi_  = reference_wavefunction_->frzcpi();
    frzvpi_  = reference_wavefunction_->frzvpi();
    nmopi_   = reference_wavefunction_->nmopi();
    nsopi_   = reference_wavefunction_->nsopi();
    nvirtpi_ = nsopi_ - frzcpi_ - frzvpi_ - doccpi_;
}

double @Plugin@::compute_energy()
{
    /* Your code goes here. */

    return 0.0;
}

extern "C"
int read_options(std::string name, Options& options)
{
    if (name == "@PLUGIN@"|| options.read_globals()) {
        /*- The amount of information printed to the output file -*/
        options.add_int("PRINT", 1);
    }

    return true;
}

extern "C"
PsiReturnType @plugin@(Options& options)
{
    @Plugin@ wave(Process::environment.wavefunction(), options);
    wave.compute_energy();

    return Success;
}

}} // End namespaces