3 files changed, 127 insertions, 2 deletions
diff --git a/compiler/mio-circle/CMakeLists.txt b/compiler/mio-circle/CMakeLists.txt
index 9c1126d6f..d24717343 100644
--- a/compiler/mio-circle/CMakeLists.txt
+++ b/compiler/mio-circle/CMakeLists.txt
@@ -1,13 +1,14 @@
-nnas_find_package(FlatBuffers QUIET)
+nnas_find_package(FlatBuffers EXACT 2.0 QUIET)
 
 if(NOT FlatBuffers_FOUND)
+  message(STATUS "mio-circle skip: FlatBuffers 2.0 NOT FOUND")
   return()
 endif(NOT FlatBuffers_FOUND)
 
 message(STATUS "Build mio-circle: TRUE")
 
 # TODO Find a better way
-set(SCHEMA_FILE "${NNAS_PROJECT_SOURCE_DIR}/nnpackage/schema/circle_schema.fbs")
+set(SCHEMA_FILE "${NNAS_PROJECT_SOURCE_DIR}/res/CircleSchema/0.3/circle_schema.fbs")
 
 # NOTE Copy circle_schema.fbs as schema.fbs to generate "schema_generated.fbs" instead of "circle_schema_generated.fbs"
 add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/schema.fbs"
@@ -26,3 +27,10 @@ FlatBuffers_Target(mio_circle
 # This example shows how to use "mio-circle" library
 add_executable(mio_circle_example example.cpp)
 target_link_libraries(mio_circle_example mio_circle)
+
+file(GLOB_RECURSE SOURCES "src/*.cpp")
+
+add_library(mio_circle_helper STATIC ${SOURCES})
+target_include_directories(mio_circle_helper PRIVATE src)
+target_include_directories(mio_circle_helper PUBLIC include)
+target_link_libraries(mio_circle_helper mio_circle)
diff --git a/compiler/mio-circle/include/mio_circle/Helper.h b/compiler/mio-circle/include/mio_circle/Helper.h
new file mode 100644
index 000000000..c0f8115fe
--- /dev/null
+++ b/compiler/mio-circle/include/mio_circle/Helper.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __MIO_CIRCLE_HELPER_H__
+#define __MIO_CIRCLE_HELPER_H__
+
+#include <mio/circle/schema_generated.h>
+
+namespace mio
+{
+namespace circle
+{
+
+bool is_valid(const ::circle::OperatorCode *opcode);
+bool is_custom(const ::circle::OperatorCode *opcode);
+std::string opcode_name(const ::circle::OperatorCode *opcode);
+const char *tensor_type(const ::circle::Tensor *tensor);
+const char *tensor_name(const ::circle::Tensor *tensor);
+
+} // namespace circle
+} // namespace mio
+
+#endif // __MIO_CIRCLE_HELPER_H__
diff --git a/compiler/mio-circle/src/Helper.cpp b/compiler/mio-circle/src/Helper.cpp
new file mode 100644
index 000000000..6f30c8c10
--- /dev/null
+++ b/compiler/mio-circle/src/Helper.cpp
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mio_circle/Helper.h"
+
+#include <sstream>
+
+namespace mio
+{
+namespace circle
+{
+
+bool is_valid(const ::circle::OperatorCode *opcode)
+{
+  ::circle::BuiltinOperator code = opcode->builtin_code();
+  return (::circle::BuiltinOperator_MIN <= code && code <= ::circle::BuiltinOperator_MAX);
+}
+
+bool is_custom(const ::circle::OperatorCode *opcode)
+{
+  ::circle::BuiltinOperator code = opcode->builtin_code();
+  return (code == ::circle::BuiltinOperator_CUSTOM);
+}
+
+std::string opcode_name(const ::circle::OperatorCode *opcode)
+{
+  assert(opcode);
+
+  if (!is_valid(opcode))
+  {
+    std::ostringstream oss;
+    oss << "(invalid)";
+    return oss.str();
+  }
+
+  if (is_custom(opcode))
+  {
+    if (!opcode->custom_code())
+      return "(invalid custom)";
+
+    std::string custom_op = "CUSTOM(";
+    custom_op += opcode->custom_code()->c_str();
+    custom_op += ")";
+    return custom_op;
+  }
+
+  ::circle::BuiltinOperator code = opcode->builtin_code();
+  return ::circle::EnumNameBuiltinOperator(code);
+}
+
+const char *tensor_type(const ::circle::Tensor *tensor)
+{
+  return ::circle::EnumNameTensorType(tensor->type());
+}
+
+const char *tensor_name(const ::circle::Tensor *tensor)
+{
+  static const char *kEmptyTensorName = "(noname)";
+
+  auto name = tensor->name();
+  if (name)
+    return name->c_str();
+
+  return kEmptyTensorName;
+}
+
+} // namespace circle
+} // namespace mio