1 files changed, 110 insertions, 0 deletions
diff --git a/compiler/mio-circle04/src/Helper.cpp b/compiler/mio-circle04/src/Helper.cpp
new file mode 100644
index 000000000..8b8737a2d
--- /dev/null
+++ b/compiler/mio-circle04/src/Helper.cpp
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2022 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 <algorithm>
+#include <sstream>
+
+namespace mio
+{
+namespace circle
+{
+
+/**
+ * This will provide v3/v3a/v3b format neutral BuiltinOperator
+ * NOTE circle has minus value opcode (252~254 as uint8_t)
+ *      we cannot use std::max() like tflite as deprecated_builtin_code can be
+ *      minus and builtin_code being 0 for v0.3 files.
+ */
+::circle::BuiltinOperator builtin_code_neutral(const ::circle::OperatorCode *opcode)
+{
+  assert(opcode != nullptr);
+  if (opcode->deprecated_builtin_code() == 127)
+  {
+    assert(opcode->builtin_code() >= 127);
+    return opcode->builtin_code();
+  }
+  // There was no 255(-1) value in v0.3
+  assert(opcode->deprecated_builtin_code() != -1);
+  return static_cast<::circle::BuiltinOperator>(opcode->deprecated_builtin_code());
+}
+
+bool is_valid(const ::circle::OperatorCode *opcode)
+{
+  // Valid Range : BuiltinOperator_MIN <= deprecated_builtin_code <= 127
+  const int8_t deprecated_builtin_code = opcode->deprecated_builtin_code();
+  if (deprecated_builtin_code < ::circle::BuiltinOperator_MIN)
+    return false;
+  // There was no 255(-1) value in v0.3
+  if (deprecated_builtin_code == -1)
+    return false;
+
+  const ::circle::BuiltinOperator builtin_code = opcode->builtin_code();
+  if (!(::circle::BuiltinOperator_MIN <= builtin_code &&
+        builtin_code <= ::circle::BuiltinOperator_MAX))
+    return false;
+
+  return true;
+}
+
+bool is_custom(const ::circle::OperatorCode *opcode)
+{
+  ::circle::BuiltinOperator code = builtin_code_neutral(opcode);
+  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 = builtin_code_neutral(opcode);
+  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)
+{
+  if (tensor->name() == nullptr || std::string(tensor->name()->c_str()).empty())
+    return "(noname)";
+
+  return tensor->name()->c_str();
+}
+
+} // namespace circle
+} // namespace mio