1 files changed, 36 insertions, 0 deletions
diff --git a/src/storage/phrase_large_table3.h b/src/storage/phrase_large_table3.h
index 51cbf20..1bd450d 100644
--- a/src/storage/phrase_large_table3.h
+++ b/src/storage/phrase_large_table3.h
@@ -75,6 +75,42 @@ public:
     bool mask_out(phrase_token_t mask, phrase_token_t value);
 };
 
+static inline int reduce_tokens(const PhraseTokens tokens,
+                                TokenVector tokenarray) {
+    int num = 0;
+    g_array_set_size(tokenarray, 0);
+
+    for (size_t i = 0; i < PHRASE_INDEX_LIBRARY_COUNT; ++i) {
+        GArray * array = tokens[i];
+        if (NULL == array)
+            continue;
+
+        num += array->len;
+
+        g_array_append_vals(tokenarray, array->data, array->len);
+    }
+
+    /* the following line will be removed in future after code are verified. */
+    assert(0 <= num && num <= 4);
+
+    return num;
+}
+
+/* for compatibility. */
+static inline int get_first_token(const PhraseTokens tokens,
+                                  /* out */ phrase_token_t & token){
+    token = null_token;
+
+    TokenVector tokenarray = g_array_new(FALSE, FALSE, sizeof(phrase_token_t));
+    int num = reduce_tokens(tokens, tokenarray);
+    if (num)
+        token = g_array_index(tokenarray, phrase_token_t, 0);
+    g_array_free(tokenarray, TRUE);
+
+    return num;
+}
+
+
 };
 
 #endif