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diff --git a/src/core/expression/RBALambdaExpressionMaker.cpp b/src/core/expression/RBALambdaExpressionMaker.cpp
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+++ b/src/core/expression/RBALambdaExpressionMaker.cpp
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+/**
+ * Copyright (c) 2019 DENSO CORPORATION.
+ * 
+ * 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.
+ */
+
+/// @file  RBALambdaExpressionMaker.cpp
+/// @brief LambdaExpression object generation class definition
+
+#include "RBALambdaExpressionMaker.hpp"
+#include "RBALambdaExpression.hpp"
+#include "RBAJsonElement.hpp"
+#include "RBAModelElement.hpp"
+#include "RBAModelImpl.hpp"
+#include "RBAModelFactory.hpp"
+
+namespace rba
+{
+
+RBALambdaExpressionMaker::RBALambdaExpressionMaker()
+  : RBAExpressionMaker{"LambdaExpression"}
+{
+}
+
+std::unique_ptr<RBAModelElement>
+RBALambdaExpressionMaker::createInstance(const std::string& name)
+{
+  return std::make_unique<RBALambdaExpression>();
+}
+
+RBAModelElement*
+RBALambdaExpressionMaker::setProperty(RBAModelElement* element,
+                                      const RBAJsonElement* jsonElem,
+                                      RBAModelImpl* model,
+                                      RBAModelElement* owner)
+{
+  RBALambdaExpression* const lambdaExpr
+    {dynamic_cast<RBALambdaExpression*>(element)};
+
+  // Set LetStatement
+  const std::int32_t pop_num {setLetStatement(model, lambdaExpr, jsonElem)};
+
+  // Set variable
+  const RBAJsonElement* const varElement {jsonElem->findChildren("x")};
+  RBAVariable* const var
+    {dynamic_cast<RBAVariable*>(getFactory()->createElement("Variable",
+                                                         varElement))};
+  lambdaExpr->setX(var);
+  // Set bodyText
+  getFactory()->pushVariable(var);
+  const RBAJsonElement* const body {jsonElem->findChildren("bodyText")};
+  RBAExpression* const expr
+    {dynamic_cast<RBAExpression*>(getFactory()->createElement(body->getClassName(),
+                                                           body))};
+  lambdaExpr->setBodyText(expr);
+
+  // Pop variable
+  for(std::int32_t i{0}; i<pop_num; i++) {
+    getFactory()->popVariable();
+  }
+  
+  return lambdaExpr;
+}
+
+}