1 files changed, 22 insertions, 0 deletions
diff --git a/python/src/observer.h b/python/src/observer.h
new file mode 100644
index 00000000..d398f2f7
--- /dev/null
+++ b/python/src/observer.h
@@ -0,0 +1,22 @@
+#include "decoder/hg.h"
+#include "decoder/decoder.h"
+#include <iostream>
+
+struct BasicObserver: public DecoderObserver {
+    Hypergraph* hypergraph;
+    BasicObserver() : hypergraph(NULL) {}
+    ~BasicObserver() {
+        if(hypergraph != NULL) delete hypergraph;
+    }
+    void NotifyDecodingStart(const SentenceMetadata& smeta) {}
+    void NotifySourceParseFailure(const SentenceMetadata& smeta) {}
+    void NotifyTranslationForest(const SentenceMetadata& smeta, Hypergraph* hg) {
+        if(hypergraph != NULL) delete hypergraph;
+        hypergraph = new Hypergraph(*hg);
+    }
+    void NotifyAlignmentFailure(const SentenceMetadata& semta) {
+        if(hypergraph != NULL) delete hypergraph;
+    }
+    void NotifyAlignmentForest(const SentenceMetadata& smeta, Hypergraph* hg) {}
+    void NotifyDecodingComplete(const SentenceMetadata& smeta) {}
+};