Capture exceptions before return to user code

Signed-off-by: Yangbo Long <[email protected]>

Author: YangboLong

src/cpp/fastdds/xtypes/dynamic_types/DynamicTypeBuilderFactoryImpl.cpp

@@ -69,8 +69,16 @@ traits<DynamicTypeBuilder>::ref_type DynamicTypeBuilderFactoryImpl::create_type_
 {
     traits<DynamicTypeBuilder>::ref_type ret_val;
 
-    idlparser::Context context = idlparser::parse_file(document, type_name, include_paths);
-    ret_val = context.builder;
+    try
+    {
+        idlparser::Context context = idlparser::parse_file(document, type_name, include_paths);
+        ret_val = context.builder;
+    }
+    catch (const std::exception& e)
+    {
+        EPROSIMA_LOG_ERROR(IDLPARSER, e.what());
+        ret_val.reset();
+    }
 
     return ret_val;
 }

src/cpp/fastdds/xtypes/dynamic_types/idl_parser/IdlPreprocessor.hpp

@@ -202,24 +202,13 @@ template<>
 inline std::string PreprocessorContext::preprocess_string<PreprocessorContext::preprocess_strategy::temporary_file>(
         const std::string& idl_string) const
 {
-    std::string processed;
+    auto os_tmp = get_temporary_file();
 
-    try
-    {
-        auto os_tmp = get_temporary_file();
-
-        // Populate
-        os_tmp.first << idl_string;
-        os_tmp.first.close();
-
-        processed = preprocess_file(os_tmp.second);
-    }
-    catch (const std::exception& e)
-    {
-        EPROSIMA_LOG_ERROR(IDLPARSER, "Error: " << e.what());
-    }
+    // Populate
+    os_tmp.first << idl_string;
+    os_tmp.first.close();
 
-    return processed;
+    return preprocess_file(os_tmp.second);
 }
 
 inline std::string PreprocessorContext::preprocess_string(