/*
* Copyright (c) 2006-2009 Erin Catto http://www.box2d.org
* Copyright (c) 2013 Google, Inc.
*
* This software is provided 'as-is', without any express or implied
* warranty.  In no event will the authors be held liable for any damages
* arising from the use of this software.
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/

#include <Box2D/Common/b2Settings.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>

b2Version b2_version = {2, 3, 0};

#define LIQUIDFUN_VERSION_MAJOR 1
#define LIQUIDFUN_VERSION_MINOR 1
#define LIQUIDFUN_VERSION_REVISION 0
#define LIQUIDFUN_STRING_EXPAND(X) #X
#define LIQUIDFUN_STRING(X) LIQUIDFUN_STRING_EXPAND(X)

static void* b2AllocDefault(int32 size, void* callbackData);
static void b2FreeDefault(void* mem, void* callbackData);

const b2Version b2_liquidFunVersion = {
	LIQUIDFUN_VERSION_MAJOR, LIQUIDFUN_VERSION_MINOR,
	LIQUIDFUN_VERSION_REVISION,
};

const char *b2_liquidFunVersionString =
	"LiquidFun "
	LIQUIDFUN_STRING(LIQUIDFUN_VERSION_MAJOR) "."
	LIQUIDFUN_STRING(LIQUIDFUN_VERSION_MINOR) "."
	LIQUIDFUN_STRING(LIQUIDFUN_VERSION_REVISION);

static int32 b2_numAllocs = 0;

// Initialize default allocator.
static b2AllocFunction b2_allocCallback = b2AllocDefault;
static b2FreeFunction b2_freeCallback = b2FreeDefault;
static void *b2_callbackData = NULL;

// Default implementation of b2AllocFunction.
static void* b2AllocDefault(int32 size, void* callbackData)
{
	B2_NOT_USED(callbackData);
	return malloc(size);
}

// Default implementation of b2FreeFunction.
static void b2FreeDefault(void* mem, void* callbackData)
{
	B2_NOT_USED(callbackData);
	free(mem);
}

/// Set alloc and free callbacks to override the default behavior of using
/// malloc() and free() for dynamic memory allocation.
/// Set allocCallback and freeCallback to NULL to restore the default
/// allocator (malloc / free).
void b2SetAllocFreeCallbacks(b2AllocFunction allocCallback,
							 b2FreeFunction freeCallback, void* callbackData)
{
	b2Assert((allocCallback && freeCallback) ||
			 (!allocCallback && !freeCallback));
	b2Assert(0 == b2GetNumAllocs());
	if (allocCallback && freeCallback)
	{
		b2_allocCallback = allocCallback;
		b2_freeCallback = freeCallback;
		b2_callbackData = callbackData;
	}
	else
	{
		b2_allocCallback = b2AllocDefault;
		b2_freeCallback = b2FreeDefault;
		b2_callbackData = NULL;
	}
}

// Memory allocators. Modify these to use your own allocator.
void* b2Alloc(int32 size)
{
	b2_numAllocs++;
	return b2_allocCallback(size, b2_callbackData);
}

void b2Free(void* mem)
{
	b2_numAllocs--;
	b2_freeCallback(mem, b2_callbackData);
}

void b2SetNumAllocs(const int32 numAllocs)
{
	b2_numAllocs = numAllocs;
}

int32 b2GetNumAllocs()
{
	return b2_numAllocs;
}

// You can modify this to use your logging facility.
void b2Log(const char* string, ...)
{
#if DEBUG
	va_list args;
	va_start(args, string);
	vprintf(string, args);
	va_end(args);
#else
	B2_NOT_USED(string);
#endif
}

class Validator
{
public:
	Validator()
	{
		b2Assert(sizeof(uint64)==8);
		b2Assert(sizeof(int64)==8);
	}
} validate;