Is there a way to use existing c++ interfaces wrapped in differing namespaces in Stateflow without redefining them to C-Style enums?

조회 수: 1 (최근 30일)
Problem Description:
Given a large project with interfaces defined in the form:
namespace ns1
{
class MyClass
{
public:
enum myEnum : int8
{
FOO = 0,
BAR = 1,
FOOBAR = 2
};
myEnum m_myEnum;
}
}
namespace ns2
{
class MyOtherClass
{
enum myOtherEnum : int8
{
FOO = 0,
BAR = 1,
FOOBAR = 2
};
myOtherEnum m_myOtherEnum;
}
}
Within C++, the value of the first enum could be accessed using ns1::MyClass::myEnum. In order to write on variables using these interfaces from a Stateflow generated C-File, I only came up with one solution so far: to have the Code Generator redefine both interfaces in C-Style, based on the values entered within Stateflow:
typedef enum
{
NS2_MYCLASS_MY_ENUM_FOO = 0,
NS2_MYCLASS_MY_ENUM_BAR = 1,
NS2_MYCLASS_MY_ENUM_FOOBAR = 2,
} MY_ENUM
typedef enum
{
NS2_MYOTHERCLASS_MY_OTHER_ENUM_FOO = 0,
NS2_MYOTHERCLASS_MY_OTHER_ENUM_BAR = 1,
NS2_MYOTHERCLASS_MY_OTHER_ENUM_FOOBAR = 2,
} MY_OTHER_ENUM
To get these values back on variables, defined in the form of the original enums, there have to be static casts implemented like e.g.
instanceOfMyClass.m_myEnum = static_cast<ns1::MyClass::myEnum>(MY_ENUM)
instanceOfMyOtherClass.m_myOtherEnum = static_cast<ns2::MyOtherClass::myOtherEnum>(MY_OTHER_ENUM)
The disadvantages are:
  • redefinition is extra work, prone to errors and a lot of work to keep in sync
  • static casting is dangerous, especially, when e.g. the order of the values within the enumeration changes
  • the principle of single source of truth is violated which leads to these disadvantages
Question:
  • Is there a way to directly use the original, C++-Style enums without recreating them and having all the stated disadvantages?
  • I'm thinking about a solution where I can enter the names and paths of the original interfaces directly within StateFlow and generating C++ code that is therefore already integrated - without any wrapping and extra, error prone work.

답변 (1개)

Jafar Gholamzadeh
Jafar Gholamzadeh 2024년 6월 6일
there is another question and answer in this link , and it seems there is no way to directly using c++ constructs in charts

카테고리

Help CenterFile Exchange에서 Simulink Coder에 대해 자세히 알아보기

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by