1 files changed, 32 insertions, 2 deletions
diff --git a/src/lookup/phonetic_lookup.h b/src/lookup/phonetic_lookup.h
index 6ca7d4f..65602c7 100644
--- a/src/lookup/phonetic_lookup.h
+++ b/src/lookup/phonetic_lookup.h
@@ -117,8 +117,38 @@ private:
     GPtrArray * m_steps_content;
 
 public:
-    bool clear();
-    bool prepare(gint32 nstep);
+    bool clear() {
+        /* clear m_steps_index */
+        for ( size_t i = 0; i < m_steps_index->len; ++i){
+            GHashTable * table = (GHashTable *) g_ptr_array_index(m_steps_index, i);
+            g_hash_table_destroy(table);
+            g_ptr_array_index(m_steps_index, i) = NULL;
+        }
+
+        /* clear m_steps_content */
+        for ( size_t i = 0; i < m_steps_content->len; ++i){
+            GArray * array = (GArray *) g_ptr_array_index(m_steps_content, i);
+            g_array_free(array, TRUE);
+            g_ptr_array_index(m_steps_content, i) = NULL;
+        }
+
+        return true;
+    }
+
+    bool prepare(gint32 nstep) {
+        /* add null start step */
+        g_ptr_array_set_size(m_steps_index, nstep);
+        g_ptr_array_set_size(m_steps_content, nstep);
+
+        for (int i = 0; i < nstep; ++i) {
+            /* initialize m_steps_index */
+            g_ptr_array_index(m_steps_index, i) = g_hash_table_new(g_direct_hash, g_direct_equal);
+            /* initialize m_steps_content */
+            g_ptr_array_index(m_steps_content, i) = g_array_new(FALSE, FALSE, sizeof(trellis_node<nbest>));
+        }
+
+        return true;
+    }
 
     /* Array of phrase_token_t */
     bool fill_prefixes(/* in */ TokenVector prefixes);