Handle all possible exceptions in CommandLineParser

utilities/src/utilities/CommandLineParser.cpp

@@ -4,17 +4,19 @@
 
 #include <exception>
 
-namespace Utilities
+namespace
 {
 
-CommandLineParser::Result CommandLineParser::parse( const int argc, char const* const* argv )
+Utilities::CommandLineParser::Result createCLIAndParse( const int argc, char const* const* argv )
 {
     CLI::App app{ "hasm: assembler for the nand2tetris hack platform" };
 
     std::filesystem::path inputFile{};
-    const auto            inputFileOption = app.add_option( "-i,--input-file", inputFile, "input .asm file" );
+
+    const auto inputFileOption = app.add_option( "-i,--input-file", inputFile, "input .asm file" );
 
     bool exportSymbolTable{ false };
+
     app.add_flag( "-s,--symbol-table", exportSymbolTable, "export symbol table (to <input file>.sym)" )
         ->needs( inputFileOption );
 
@@ -24,15 +26,28 @@ CommandLineParser::Result CommandLineParser::parse( const int argc, char const*
     {
         app.parse( argc, argv );
 
-        return Config{ std::move( inputFile ), exportSymbolTable };
+        return Utilities::CommandLineParser::Config{ std::move( inputFile ), exportSymbolTable };
     }
     catch ( const CLI::CallForHelp& )
     {
-        return RequestToPrintHelp{ app.help() };
+        return Utilities::CommandLineParser::RequestToPrintHelp{ app.help() };
     }
     catch ( const CLI::CallForVersion& )
     {
-        return RequestToPrintVersion{};
+        return Utilities::CommandLineParser::RequestToPrintVersion{};
+    }
+}
+
+} // namespace
+
+namespace Utilities
+{
+
+CommandLineParser::Result CommandLineParser::parse( const int argc, char const* const* argv )
+{
+    try
+    {
+        return createCLIAndParse( argc, argv );
     }
     catch ( const std::exception& exception )
     {