From 0af9a1cb4e80614664a8b0945a1559d17c4e9479 Mon Sep 17 00:00:00 2001
From: Binbin Zhang <binbzha@qq.com>
Date: Fri, 7 Nov 2025 16:22:14 +0800
Subject: [PATCH] [runtime] mv fst to frontend

---
 runtime/core/frontend/CMakeLists.txt    | 1 +
 runtime/core/{utils => frontend}/fst.cc | 5 ++++-
 runtime/core/{utils => frontend}/fst.h  | 8 ++++----
 runtime/core/frontend/g2p_en.cc         | 2 +-
 runtime/core/utils/CMakeLists.txt       | 1 -
 5 files changed, 10 insertions(+), 7 deletions(-)
 rename runtime/core/{utils => frontend}/fst.cc (96%)
 rename runtime/core/{utils => frontend}/fst.h (94%)

diff --git a/runtime/core/frontend/CMakeLists.txt b/runtime/core/frontend/CMakeLists.txt
index ed57c87..cca2de2 100644
--- a/runtime/core/frontend/CMakeLists.txt
+++ b/runtime/core/frontend/CMakeLists.txt
@@ -1,6 +1,7 @@
 add_library(frontend STATIC
   lexicon.cc
   g2p_en.cc
+  fst.cc
   g2p_prosody.cc
   word_break.cc
   sentence_break.cc
diff --git a/runtime/core/utils/fst.cc b/runtime/core/frontend/fst.cc
similarity index 96%
rename from runtime/core/utils/fst.cc
rename to runtime/core/frontend/fst.cc
index 47db068..a12c38d 100644
--- a/runtime/core/utils/fst.cc
+++ b/runtime/core/frontend/fst.cc
@@ -12,7 +12,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "utils/fst.h"
+#include "frontend/fst.h"
+
+#include <string>
+#include <vector>
 
 #include "fst/rmepsilon.h"
 
diff --git a/runtime/core/utils/fst.h b/runtime/core/frontend/fst.h
similarity index 94%
rename from runtime/core/utils/fst.h
rename to runtime/core/frontend/fst.h
index 2379bcc..605df0b 100644
--- a/runtime/core/utils/fst.h
+++ b/runtime/core/frontend/fst.h
@@ -12,15 +12,15 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#ifndef UTILS_FST_H_
-#define UTILS_FST_H_
+#ifndef FRONTEND_FST_H_
+#define FRONTEND_FST_H_
 
 #include <string>
 #include <vector>
 
 #include "fst/fstlib.h"
-#include "utils/log.h"
 
+#include "utils/log.h"
 #include "utils/string.h"
 
 using fst::StdVectorFst;
@@ -44,4 +44,4 @@ void ShortestPath(const std::string& input, const StdVectorFst* fst,
 
 }  // namespace wetts
 
-#endif  // UTILS_FST_H_
+#endif  // FRONTEND_FST_H_
diff --git a/runtime/core/frontend/g2p_en.cc b/runtime/core/frontend/g2p_en.cc
index 87d471e..f2160f9 100644
--- a/runtime/core/frontend/g2p_en.cc
+++ b/runtime/core/frontend/g2p_en.cc
@@ -19,7 +19,7 @@
 
 #include "utils/log.h"
 
-#include "utils/fst.h"
+#include "frontend/fst.h"
 #include "utils/string.h"
 #include "utils/utils.h"
 
diff --git a/runtime/core/utils/CMakeLists.txt b/runtime/core/utils/CMakeLists.txt
index 58074b2..83fb24c 100644
--- a/runtime/core/utils/CMakeLists.txt
+++ b/runtime/core/utils/CMakeLists.txt
@@ -1,5 +1,4 @@
 add_library(utils STATIC
-  fst.cc
   string.cc
   utils.cc
 )