// File: crn_assert.h
// See Copyright Notice and license at the end of inc/crnlib.h
#pragma once

const unsigned int CRNLIB_FAIL_EXCEPTION_CODE = 256U;
void crnlib_enable_fail_exceptions(bool enabled);

void crnlib_assert(const char* pExp, const char* pFile, unsigned line);
void crnlib_fail(const char* pExp, const char* pFile, unsigned line);

#ifdef NDEBUG
#define CRNLIB_ASSERT(x) ((void)0)
#undef CRNLIB_ASSERTS_ENABLED
#else
#define CRNLIB_ASSERT(_exp) (void)((!!(_exp)) || (crnlib_assert(#_exp, __FILE__, __LINE__), 0))
#define CRNLIB_ASSERTS_ENABLED
#endif

#define CRNLIB_VERIFY(_exp) (void)((!!(_exp)) || (crnlib_assert(#_exp, __FILE__, __LINE__), 0))

#define CRNLIB_FAIL(msg)                   \
  do {                                     \
    crnlib_fail(#msg, __FILE__, __LINE__); \
  } while (0)

#define CRNLIB_ASSERT_OPEN_RANGE(x, l, h) CRNLIB_ASSERT((x >= l) && (x < h))
#define CRNLIB_ASSERT_CLOSED_RANGE(x, l, h) CRNLIB_ASSERT((x >= l) && (x <= h))

void trace(const char* pFmt, va_list args);
void trace(const char* pFmt, ...);

// Borrowed from boost libraries.
template <bool x>
struct crnlib_assume_failure;
template <>
struct crnlib_assume_failure<true> {
  enum { blah = 1 };
};
template <int x>
struct crnlib_assume_try {};

#define CRNLIB_JOINER_FINAL(a, b) a##b
#define CRNLIB_JOINER(a, b) CRNLIB_JOINER_FINAL(a, b)
#define CRNLIB_JOIN(a, b) CRNLIB_JOINER(a, b)
#define CRNLIB_ASSUME(p) typedef crnlib_assume_try<sizeof(crnlib_assume_failure<(bool)(p)>)> CRNLIB_JOIN(crnlib_assume_typedef, __COUNTER__)

#ifdef NDEBUG
template <typename T>
inline T crnlib_assert_range(T i, T) {
  return i;
}
template <typename T>
inline T crnlib_assert_range_incl(T i, T) {
  return i;
}
#else
template <typename T>
inline T crnlib_assert_range(T i, T m) {
  CRNLIB_ASSERT((i >= 0) && (i < m));
  return i;
}
template <typename T>
inline T crnlib_assert_range_incl(T i, T m) {
  CRNLIB_ASSERT((i >= 0) && (i <= m));
  return i;
}
#endif
