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#ifndef SEARCH_CONTEXT__
#define SEARCH_CONTEXT__
#include "lm/model.hh"
#include "search/config.hh"
#include "search/final.hh"
#include "search/types.hh"
#include "search/vertex.hh"
#include "search/word.hh"
#include "util/exception.hh"
#include <boost/pool/object_pool.hpp>
#include <boost/ptr_container/ptr_vector.hpp>
#include <vector>
namespace search {
class Weights;
class ContextBase {
public:
explicit ContextBase(const Config &config) : pop_limit_(config.PopLimit()), weights_(config.GetWeights()) {}
Final *NewFinal() {
Final *ret = final_pool_.construct();
assert(ret);
return ret;
}
VertexNode *NewVertexNode() {
VertexNode *ret = vertex_node_pool_.construct();
assert(ret);
return ret;
}
void DeleteVertexNode(VertexNode *node) {
vertex_node_pool_.destroy(node);
}
unsigned int PopLimit() const { return pop_limit_; }
const Weights &GetWeights() const { return weights_; }
private:
boost::object_pool<Final> final_pool_;
boost::object_pool<VertexNode> vertex_node_pool_;
unsigned int pop_limit_;
const Weights &weights_;
};
template <class Model> class Context : public ContextBase {
public:
Context(const Config &config, const Model &model) : ContextBase(config), model_(model) {}
const Model &LanguageModel() const { return model_; }
private:
const Model &model_;
};
} // namespace search
#endif // SEARCH_CONTEXT__
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