handler.hpp

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#pragma once
 
#include <exception>
#include <string>
 
#include "result.hpp"
 
namespace CppSpec {

struct PositiveExpectationHandler {
  template <class Matcher>
  static Result handle_matcher(Matcher& matcher);
  static std::string verb() { return "should"; }
};

struct NegativeExpectationHandler {
  template <class Matcher>
  static Result handle_matcher(Matcher& matcher);
  static std::string verb() { return "should not"; }
};

template <class Matcher>
Result PositiveExpectationHandler::handle_matcher(Matcher& matcher) {
  bool matched = false;
  try {
    matched = matcher.match();
  } catch (std::exception& e) {
    return Result::error_with(matcher.get_location(), e.what());
  } catch (...) {
    return Result::error_with(matcher.get_location(), "Unknown exception thrown during matcher execution.");
  }
 
  return !matched ? Result::failure_with(matcher.get_location(), matcher.failure_message())
                  : Result::success(matcher.get_location());
}

template <class Matcher>
Result NegativeExpectationHandler::handle_matcher(Matcher& matcher) {
  bool matched = false;
  try {
    matched = matcher.negated_match();
  } catch (std::exception& e) {
    return Result::error_with(matcher.get_location(), e.what());
  } catch (...) {
    return Result::error_with(matcher.get_location(), "Unhandled exception thrown during matcher execution.");
  }
  return !matched ? Result::failure_with(matcher.get_location(), matcher.failure_message_when_negated())
                  : Result::success(matcher.get_location());
}
 
}  // namespace CppSpec