Hybrid.cpp

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#include "problib/pdfs/Hybrid.h"

using namespace pbl;

Hybrid::Hybrid() : PDF(-1, PDF::HYBRID), ptr_(0) {
}

Hybrid::Hybrid(const Hybrid& orig) : PDF(orig), ptr_(orig.ptr_) {
    if (ptr_) {
        ++ptr_->n_ptrs_;
    }
}

Hybrid::~Hybrid() {
        if (ptr_) {
                --ptr_->n_ptrs_;

                if (ptr_->n_ptrs_ == 0) {
                        delete ptr_;
                }
        }
}

Hybrid& Hybrid::operator=(const Hybrid& other)  {
    if (this != &other)  {
        if (ptr_) {
                        --ptr_->n_ptrs_;
                        if (ptr_->n_ptrs_ == 0) {
                                delete ptr_;
                        }
        }
        ptr_ = other.ptr_;
        ++ptr_->n_ptrs_;

        dimensions_ = other.dimensions_;
    }
    return *this;
}

Hybrid* Hybrid::clone() const {
    return new Hybrid(*this);
}

void Hybrid::cloneStruct() {
        if (ptr_->n_ptrs_ > 1) {
                --ptr_->n_ptrs_;
        ptr_ = new HybridStruct(*ptr_);
        }
}

double Hybrid::getLikelihood(const PDF& pdf) const {
    assert_msg(false, "Likelihood method not implemented. Please create a subclass of Hybrid and implement your own method.");
}

void Hybrid::clear() {
        if (ptr_) {
                --ptr_->n_ptrs_;
                if (ptr_->n_ptrs_ == 0) {
                        delete ptr_;
                }
                ptr_ = 0;
        }
}

double Hybrid::getMaxDensity() const {
    assert_msg(false, "Cannot calculate MaxDensity of Hybrid.");
        return 0;
}

void Hybrid::addPDF(const PDF& pdf, double priority) {
        if (dimensions_ < 0) {
                dimensions_ = pdf.dimensions();
        } else {
        assert(dimensions_ == pdf.dimensions() || pdf.type() == PDF::DISCRETE);
        }

        if (!ptr_) {
        ptr_ = new HybridStruct();
        } else {
                cloneStruct();
        }

    ptr_->pdfs_.push_back(pdf.clone());
}

const std::vector<PDF*>& Hybrid::getPDFS() const {
    assert_msg(ptr_, "Hybrid does not contain pdfs.");
    return ptr_->pdfs_;
}

std::string Hybrid::toString(const std::string& indent) const {
        if (!ptr_) {
        return "HYBRID(-)";
        }

        std::string new_indent = indent + "  ";

        std::stringstream ss;
    ss << "HYBRID{\n";
    for (std::vector<PDF*>::const_iterator it_pdf = ptr_->pdfs_.begin(); it_pdf != ptr_->pdfs_.end(); ++it_pdf) {
        ss << new_indent << (*it_pdf)->toString(new_indent) << "\n";
        }
        ss << indent << "}";
        return ss.str();
}