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-rw-r--r--klm/search/context.hh65
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diff --git a/klm/search/context.hh b/klm/search/context.hh
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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 "util/exception.hh"
+#include "util/pool.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()) {}
+
+ util::Pool &FinalPool() {
+ return final_pool_;
+ }
+
+ 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:
+ util::Pool 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__