chore: import upstream snapshot with attribution

tensorflow/lite/tools/tool_params.cc

@@ -0,0 +1,76 @@
+/* Copyright 2020 The TensorFlow Authors. 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 "tensorflow/lite/tools/tool_params.h"
+
+#include <cstdint>
+#include <string>
+#include <unordered_map>
+
+#include "tensorflow/lite/tools/logging.h"
+
+namespace tflite {
+namespace tools {
+
+void ToolParam::AssertHasSameType(ToolParam::ParamType a,
+                                  ToolParam::ParamType b) {
+  TFLITE_TOOLS_CHECK(a == b) << "Type mismatch while accessing parameter.";
+}
+
+template <>
+ToolParam::ParamType ToolParam::GetValueType<int32_t>() {
+  return ToolParam::ParamType::TYPE_INT32;
+}
+
+template <>
+ToolParam::ParamType ToolParam::GetValueType<bool>() {
+  return ToolParam::ParamType::TYPE_BOOL;
+}
+
+template <>
+ToolParam::ParamType ToolParam::GetValueType<float>() {
+  return ToolParam::ParamType::TYPE_FLOAT;
+}
+
+template <>
+ToolParam::ParamType ToolParam::GetValueType<std::string>() {
+  return ToolParam::ParamType::TYPE_STRING;
+}
+
+void ToolParams::AssertParamExists(const std::string& name) const {
+  TFLITE_TOOLS_CHECK(HasParam(name)) << name << " was not found.";
+}
+
+void ToolParams::Set(const ToolParams& other) {
+  for (const auto& param : params_) {
+    const ToolParam* other_param = other.GetParam(param.first);
+    if (other_param == nullptr) continue;
+    param.second->Set(*other_param);
+  }
+}
+
+void ToolParams::Merge(const ToolParams& other, bool overwrite) {
+  for (const auto& one : other.params_) {
+    auto it = params_.find(one.first);
+    if (it == params_.end()) {
+      AddParam(one.first, one.second->Clone());
+    } else if (overwrite) {
+      it->second->Set(*one.second);
+    }
+  }
+}
+
+}  // namespace tools
+}  // namespace tflite