json-validator/include/jvalidate/detail/expect.h

#pragma once

#include <iostream>
#include <sstream>

#if defined(__clang__) || defined(__GNUC__)
#define JVALIDATE_LIKELY(x) __builtin_expect(!!(x), 1)
#define JVALIDATE_UNLIKELY(x) __builtin_expect(!!(x), 0)
#else
#define JVALIDATE_LIKELY(x) (x)
#define JVALIDATE_UNLIKELY(x) (x)
#endif

#if defined(JVALIDATE_USE_EXCEPTIONS)
#define JVALIDATE_THROW(extype, message)                                                           \
  do {                                                                                             \
    std::stringstream ss;                                                                          \
    ss << message;                                                                                 \
    throw extype(ss.str());                                                                        \
  } while (false)
#else
#define JVALIDATE_THROW(extype, message)                                                           \
  do {                                                                                             \
    std::cerr << message << std::endl;                                                             \
    std::terminate();                                                                              \
  } while (false)
#endif

#define EXPECT_T(condition, extype, message)                                                       \
  if (JVALIDATE_UNLIKELY(!(condition))) {                                                          \
    JVALIDATE_THROW(extype, message);                                                              \
  }

#define EXPECT_M(condition, message) EXPECT_T(condition, std::runtime_error, message)

#define EXPECT(condition) EXPECT_M(condition, #condition)

#define RETURN_UNLESS(condition, ...)                                                              \
  if (JVALIDATE_UNLIKELY(!(condition))) {                                                          \
    return __VA_ARGS__;                                                                            \
  }