How to use string branches for switch case

switch-case As stipulated in the grammar case You can't use a string case The branch , Sometimes there may be relevant requirements in the project

//common.h
#include <stdint.h>
using namespace std;
namespace common
{
    
	constexpr uint32_t strToHash(const char* str);
	uint32_t add(uint32_t a, uint32_t b);
};
constexpr uint32_t common::strToHash(const char* str)
{
    
	uint32_t val(0);
	for (int i = 0; str && ('\0' != str[i]); i++)
		val = (val << 6) ^ (val >> 26) ^ str[i];
	return val;
}

//main.cpp
#include <iostream>
#include <vector>
#include "common.h"
#include <string>
#include <stdio.h>

#define CASE(input,func) \ case common::strToHash(input): \ func; \ break;
void myDebug(string str)
{
    
	cout << str << ",hash value ：" << common::strToHash(str.c_str()) << endl;
}

void SwitchByString(string str)
{
    
	if (str.size() == 0)
	{
    
		return;
	}
	const char* input = str.c_str();  //string convert to char *
	switch (common::strToHash(input))
	{
    
		CASE("0x0002", myDebug("0x0002"))
		default:
			break;
	}
}
int main()
{
    
	SwitchByString("0x0002");
	system("pause");
	return 0;
}