1 files changed, 15 insertions, 0 deletions
diff --git a/utils/json_feature_map_lexer.h b/utils/json_feature_map_lexer.h
new file mode 100644
index 00000000..3324aa29
--- /dev/null
+++ b/utils/json_feature_map_lexer.h
@@ -0,0 +1,15 @@
+#ifndef _RULE_LEXER_H_
+#define _RULE_LEXER_H_
+
+#include <iostream>
+#include <string>
+
+#include "sparse_vector.h"
+
+struct JSONFeatureMapLexer {
+  typedef void (*FeatureMapCallback)(const std::string& id, const SparseVector<float>& fmap, void* extra);
+  static void ReadRules(std::istream* in, FeatureMapCallback func, void* extra);
+};
+
+#endif
+