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semantics.h
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247 lines (204 loc) · 4.1 KB
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#ifndef __simplelib_semantics_h__
#define __simplelib_semantics_h__
#include <ctype.h>
#include <stdarg.h>
#ifdef _MSC_VER
#define DEPRECATED(x) __declspec(deprecated(x))
#ifndef __PLACEMENT_NEW_INLINE
#define __PLACEMENT_NEW_INLINE
inline void* __CRTDECL operator new(size_t, void* _Where)
{
return (_Where);
}
#if _MSC_VER >= 1200
inline void __CRTDECL operator delete(void*, void*)
{
return;
}
#endif
#endif
#endif
#ifdef __GNUC__
#define DEPRECATED(x) __attribute__ ((deprecated(x)))
// Placed new/delete operators
inline void* operator new(size_t, void* pMem)
{
return pMem;
}
inline void operator delete(void* pMem, void*)
{
}
#include <strings.h>
#endif
namespace SimpleLib
{
// Minimum
template <typename T>
T Min(const T& a, const T& b) { return a < b ? a : b; }
// Maximum
template <typename T>
T Max(const T& a, const T& b) { return a > b ? a : b; }
// Generic compare function
template <typename T>
int Compare(const T& a, const T& b)
{
return a > b ? 1 : a < b ? -1 : 0;
}
// Placed construction
template<typename T, typename T2> inline
void Constructor(T* ptr, const T2& src)
{
new ((void*)ptr) T(src);
}
// Placed destruction
template <typename T> inline
void Destructor(T* ptr)
{
ptr->~T();
}
// Simple value semantics
class SValue
{
public:
template <typename T, typename TOwner>
static const T& OnAdd(const T& val, TOwner* pOwner)
{
return val;
}
template <typename T, typename TOwner>
static void OnRemove(T& val, TOwner* pOwner)
{ }
template <typename T, typename TOwner>
static void OnDetach(T& val, TOwner* pOwner)
{ }
template <typename T1, typename T2>
static int Compare(const T1& a, const T2& b)
{
return SimpleLib::Compare(a, b);
}
};
// Owned ptr semantics
class SOwnedPtr
{
public:
template <typename T, typename TOwner>
static const T& OnAdd(const T& val, TOwner* pOwner)
{
return val;
}
template <typename T, typename TOwner>
static void OnRemove(T& val, TOwner* pOwner)
{
delete val;
}
template <typename T, typename TOwner>
static void OnDetach(T& val, TOwner* pOwner)
{ }
template <typename T>
static int Compare(const T& a, const T& b)
{
return SimpleLib::Compare(a, b);
}
};
template <typename T>
struct ICharSet
{
virtual bool IsChar(T ch) const = 0;
};
template <typename T>
struct CCharSetSingle : public ICharSet<T>
{
public:
CCharSetSingle(T ch)
{
_ch = ch;
}
virtual bool IsChar(T ch) const override
{
return ch == _ch;
}
T _ch;
};
// Character semantics
template <typename T>
class SChar
{
};
// Formatter - either include simplelib/formatting.h in your project or,
// declare your own implementation making sure it's in the SimpleLib namespace
// eg:
// namespace SimpleLib
// {
// template <typename T>
// void vcbprintf(void (*write)(void*, T), void* arg, const T* format, va_list args)
// {
// // Your formatter impl
// }
// }
template <typename T>
void simplelib_vcbprintf(void (*write)(void*, T), void* arg, const T* format, va_list args);
template <>
class SChar<char>
{
public:
static int Length(const char* a)
{
return (int)strlen(a);
}
static const char* EmptyString()
{
return "";
}
};
template <typename T>
class SCaseSensitive
{
};
template <typename T>
class SCaseInsensitive
{
};
template <>
class SCaseSensitive<char>
{
public:
static int Compare(char a, char b)
{
return b - a;
}
static int Compare(const char* a, const char* b, int len)
{
return strncmp(a, b, len);
}
static int Compare(const char* a, const char* b)
{
return strcmp(a, b);
}
};
template <>
class SCaseInsensitive<char>
{
public:
static int Compare(char a, char b)
{
return toupper(b) - toupper(a);
}
static int Compare(const char* a, const char* b, int len)
{
#ifdef _MSC_VER
return _strnicmp(a, b, len);
#else
return strncasecmp(a, b, len);
#endif
}
static int Compare(const char* a, const char* b)
{
#ifdef _MSC_VER
return _stricmp(a, b);
#else
return strcasecmp(a, b);
#endif
}
};
} // namespace
#endif // __simplelib_semantics_h__