src/macros.h

/*
 *  LDForge: LDraw parts authoring CAD
 *  Copyright (C) 2013, 2014 Teemu Piippo
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once
#include <type_traits>

#ifndef __GNUC__
# define __attribute__(X)
#endif

// =============================================================================
//
#define countof(A) (safeCountOf<std::is_array<decltype(A)>::value, (sizeof A / sizeof *A)>())

template<bool isArray, size_t elems>
inline constexpr int safeCountOf() __attribute__ ((always_inline));

template<bool isArray, size_t elems>
inline constexpr int safeCountOf()
{
	static_assert (isArray, "parameter to countof must be an array");
	return elems;
}

// =============================================================================
//
#define PROPERTY(ACCESS, TYPE, READ, WRITE, WRITETYPE)			\
private:														\
	TYPE m_##READ;												\
																\
public:															\
	inline TYPE const& READ() const								\
	{															\
		return m_##READ; 										\
	}															\
																\
ACCESS:															\
	void WRITE (TYPE const& a) PROPERTY_##WRITETYPE (READ)		\

#define PROPERTY_STOCK_WRITE(READ)								\
	{															\
		m_##READ = a;											\
	}

#define PROPERTY_CUSTOM_WRITE(READ)								\
	;

#define readAccess(A) inline decltype(_##A) A() const { return _##A; }
#define writeAccess(A,B) inline void B (decltype(_##A) const& a) const { _##A = a; }

#define DEFINE_CLASS(SELF, SUPER) \
public: \
	using Self = SELF; \
	using Super = SUPER;

// =============================================================================
//
#define elif(A) else if (A)
#define unless(A) if (not (A))
#define until(A) while (not (A))

// =============================================================================
//
#ifdef WIN32
# define DIRSLASH "\\"
# define DIRSLASH_CHAR '\\'
#else // WIN32
# define DIRSLASH "/"
# define DIRSLASH_CHAR '/'
#endif // WIN32

// =============================================================================
//
#ifdef __GNUC__
#define FUNCNAME __PRETTY_FUNCTION__
#else
#define FUNCNAME __func__
#endif // __GNUC__

// =============================================================================
//
#define dvalof(A) dprint ("value of '%1' = %2\n", #A, A)

// =============================================================================
//
// Replace assert with a version that shows a GUI dialog if possible.
// On Windows I just can't get the actual error messages otherwise.
//
#undef assert

#ifdef DEBUG
# define assert(N) { ((N) ? (void) 0 : HandleAssertFailure (__FILE__, __LINE__, FUNCNAME, #N)); }
#else
# define assert(N) {}
#endif // DEBUG

#define for_axes(AX) for (const Axis AX : std::initializer_list<const Axis> ({X, Y, Z}))

#define NUMERIC_ENUM_OPERATORS(T) \
	inline T operator++ (T& a) { a = (T) ((int) a + 1); return a; } \
	inline T operator-- (T& a) { a = (T) ((int) a - 1); return a; } \
	inline T operator++ (T& a, int) { T result = a; a = (T) ((int) a + 1); return result; } \
	inline T operator-- (T& a, int) { T result = a; a = (T) ((int) a - 1); return result; }

#if QT_VERSION >= QT_VERSION_CHECK (5, 0, 0)
# define USE_QT5
#endif


#define FOR_ENUM_NAME_HELPER(LINE) enum_iterator_ ## LINE
#define FOR_ENUM_NAME(LINE) FOR_ENUM_NAME_HELPER(LINE)

#define for_enum(ENUM, NAME) \
	for (std::underlying_type<ENUM>::type FOR_ENUM_NAME (__LINE__) = \
		std::underlying_type<ENUM>::type (ENUM::FirstValue); \
		FOR_ENUM_NAME (__LINE__) < std::underlying_type<ENUM>::type (ENUM::NumValues); \
		++FOR_ENUM_NAME (__LINE__)) \
	for (ENUM NAME = ENUM (FOR_ENUM_NAME (__LINE__)); NAME != ENUM::NumValues; \
		NAME = ENUM::NumValues)

// =============================================================================
#ifdef IN_IDE_PARSER // KDevelop workarounds:
# error IN_IDE_PARSER is defined (this code is only for KDevelop workarounds)
# define COMPILE_DATE "14-01-10 10:31:09"

# ifndef va_start
#  define va_start(va, arg)
# endif // va_start

# ifndef va_end
#  define va_end(va)
# endif // va_end

static const char* __func__ = ""; // Current function name
typedef void FILE; // :|
#endif // IN_IDE_PARSER