// fig12_05.cpp
// Demonstrating a function try block.
#include <fmt/format.h>
#include <iostream>
#include <limits>
#include <stdexcept>

// class Integer purposely throws an exception from its constructor
class Integer {
public:
   explicit Integer(int i) : value{i} {
      std::cout << fmt::format("Integer constructor: {}\n", value)
         << "Purposely throwing exception from Integer constructor\n";
      throw std::runtime_error("Integer constructor failed");
   }
private:
   int value{};
};

class ResourceManager {
public:
   ResourceManager(int i) try : myInteger(i) {
      std::cout << "ResourceManager constructor called\n";
   }
   catch (const std::runtime_error& ex) {
      std::cout << fmt::format(
         "Exception while constructing ResourceManager: ", ex.what())
         << "\nAutomatically rethrowing the exception\n";
   }
private:
   Integer myInteger;
};

int main() {
   try {
      const ResourceManager resource{7};
   }
   catch (const std::runtime_error& ex) {
      std::cout << fmt::format("Rethrown exception caught in main: {}\n",
         ex.what());
   }
}


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