#include "newstate.h"
#include <cstring>
#include <algorithm>

NewStateDummy::NewStateDummy()
	:length(0)
{
}
void NewStateDummy::Save(const void *ptr, size_t size, const char *name)
{
	length += size;
}
void NewStateDummy::Load(void *ptr, size_t size, const char *name)
{
}

NewStateExternalBuffer::NewStateExternalBuffer(char *buffer, long maxlength)
	:buffer(buffer), length(0), maxlength(maxlength)
{
}

void NewStateExternalBuffer::Save(const void *ptr, size_t size, const char *name)
{
	if (maxlength - length >= (long)size)
	{
		std::memcpy(buffer + length, ptr, size);
	}
	length += size;
}

void NewStateExternalBuffer::Load(void *ptr, size_t size, const char *name)
{
	char *dst = static_cast<char *>(ptr);
	if (maxlength - length >= (long)size)
	{
		std::memcpy(dst, buffer + length, size);
	}
	length += size;
}

NewStateExternalFunctions::NewStateExternalFunctions(const FPtrs *ff)
	:Save_(ff->Save_),
	Load_(ff->Load_),
	EnterSection_(ff->EnterSection_),
	ExitSection_(ff->ExitSection_)
{
}

void NewStateExternalFunctions::Save(const void *ptr, size_t size, const char *name)
{
	Save_(ptr, size, name);
}
void NewStateExternalFunctions::Load(void *ptr, size_t size, const char *name)
{
	Load_(ptr, size, name);
}
void NewStateExternalFunctions::EnterSection(const char *name)
{
	EnterSection_(name);
}
void NewStateExternalFunctions::ExitSection(const char *name)
{
	ExitSection_(name);
}