1 files changed, 38 insertions, 0 deletions
diff --git a/klm/lm/interpolate/arpa_to_stream.hh b/klm/lm/interpolate/arpa_to_stream.hh
new file mode 100644
index 00000000..4613998d
--- /dev/null
+++ b/klm/lm/interpolate/arpa_to_stream.hh
@@ -0,0 +1,38 @@
+#include "lm/read_arpa.hh"
+#include "util/file_piece.hh"
+
+#include <vector>
+
+#include <stdint.h>
+
+namespace util { namespace stream { class ChainPositions; } }
+
+namespace lm {
+
+namespace ngram {
+template <class T> class GrowableVocab;
+class WriteUniqueWords;
+} // namespace ngram
+
+namespace interpolate {
+
+class ARPAToStream {
+  public:
+    // Takes ownership of fd.
+    explicit ARPAToStream(int fd, ngram::GrowableVocab<ngram::WriteUniqueWords> &vocab);
+
+    std::size_t Order() const { return counts_.size(); }
+
+    const std::vector<uint64_t> &Counts() const { return counts_; }
+
+    void Run(const util::stream::ChainPositions &positions);
+
+  private:
+    util::FilePiece in_;
+
+    std::vector<uint64_t> counts_;
+
+    ngram::GrowableVocab<ngram::WriteUniqueWords> &vocab_;
+};
+
+}} // namespaces