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-rw-r--r--src/lookup/pinyin_lookup.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/lookup/pinyin_lookup.h b/src/lookup/pinyin_lookup.h
index 980b23d..b8f2e58 100644
--- a/src/lookup/pinyin_lookup.h
+++ b/src/lookup/pinyin_lookup.h
@@ -28,6 +28,8 @@
#include "pinyin_base.h"
#include "lookup.h"
+namespace pinyin{
+
class WinnerTree;
/** @file pinyin_lookup.h
@@ -139,4 +141,5 @@ public:
bool destroy_pinyin_lookup(PhraseIndexRanges ranges);
};
+};
#endif