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SqMod/module/Base/Utility.hpp
Sandu Liviu Catalin 3080c20341 More code cleanup.
2020-03-22 09:16:40 +02:00

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#pragma once
// ------------------------------------------------------------------------------------------------
#include <SqBase.hpp>
#include <vcmp.h>
// ------------------------------------------------------------------------------------------------
#include <cmath>
#include <limits>
#include <cassert>
// ------------------------------------------------------------------------------------------------
#include <sqrat.h>
// ------------------------------------------------------------------------------------------------
namespace SqMod {
/* ------------------------------------------------------------------------------------------------
* Forward declarations.
*/
class Buffer;
/* ------------------------------------------------------------------------------------------------
* Proxies to communicate with the server.
*/
extern PluginFuncs* _Func;
extern PluginCallbacks* _Clbk;
extern PluginInfo* _Info;
/* ------------------------------------------------------------------------------------------------
* Helper to register pure typename functions for better performance.
*/
#define SQMODE_DECL_TYPENAME(t, s) /*
*/ namespace { /*
*/ struct t { /*
*/ static const SQChar Str[]; /*
*/ static SQInteger Fn(HSQUIRRELVM vm); /*
*/ }; /*
*/ const SQChar t::Str[] = s; /*
*/ SQInteger t::Fn(HSQUIRRELVM vm) { /*
*/ sq_pushstring(vm, Str, sizeof(Str) / sizeof(SQChar)); /*
*/ return 1; /*
*/ } /*
*/ } /*
*/
/* ------------------------------------------------------------------------------------------------
* Retrieve the temporary buffer.
*/
SStr GetTempBuff();
/* ------------------------------------------------------------------------------------------------
* Retrieve the size of the temporary buffer.
*/
Uint32 GetTempBuffSize();
/* ------------------------------------------------------------------------------------------------
* Output a message only if the _DEBUG was defined.
*/
void OutputDebug(const char * msg, ...);
/* ------------------------------------------------------------------------------------------------
* Output a formatted user message to the console.
*/
void OutputMessage(const char * msg, ...);
/* ------------------------------------------------------------------------------------------------
* Output a formatted error message to the console.
*/
void OutputError(const char * msg, ...);
/* ------------------------------------------------------------------------------------------------
* Generate a formatted string and throw it as a sqrat exception.
*/
void SqThrowF(CCStr str, ...);
/* ------------------------------------------------------------------------------------------------
* Quickly generate a formatted string on a small static buffer without any memory allocations.
* NOTE: This does throw an exception in case of failure.
*/
CSStr FmtStr(CSStr str, ...);
/* ------------------------------------------------------------------------------------------------
* Quickly generate a formatted string on a small static buffer without any memory allocations.
* NOTE: This does not throw an exception in case of failure.
*/
CSStr ToStrF(CCStr str, ...);
/* ------------------------------------------------------------------------------------------------
* Generate a formatted string on a temporary buffer and return the string but not the buffer.
* NOTE: This does not throw an exception in case of failure.
*/
CSStr ToStringF(CCStr str, ...);
/* ------------------------------------------------------------------------------------------------
* Generate a formatted string and throw it as a squirrel exception.
*/
SQRESULT SqThrowErrorF(HSQUIRRELVM vm, CCStr str, ...);
/* ------------------------------------------------------------------------------------------------
* Simple function to check whether the specified string can be considered as a boolean value
*/
bool SToB(CSStr str);
/* ------------------------------------------------------------------------------------------------
* Retrieve a reference to a dummy StackStrF instance.
*/
StackStrF & DummyStackStrF();
/* ------------------------------------------------------------------------------------------------
* Retrieve a reference to a null script object.
*/
Object & NullObject();
/* ------------------------------------------------------------------------------------------------
* Retrieve a reference to a null script object.
*/
LightObj & NullLightObj();
/* ------------------------------------------------------------------------------------------------
* Retrieve a reference to a null/empty script table.
*/
Table & NullTable();
/* ------------------------------------------------------------------------------------------------
* Retrieve a reference to a null/empty script array.
*/
Array & NullArray();
/* ------------------------------------------------------------------------------------------------
* Retrieve a reference to a null script function.
*/
Function & NullFunction();
/* ------------------------------------------------------------------------------------------------
* Retrieve a reference to a null string.
*/
String & NullString();
/* ------------------------------------------------------------------------------------------------
* Compute the next power of two for the specified number.
*/
inline Uint32 NextPow2(Uint32 num)
{
--num;
num |= num >> 1u;
num |= num >> 2u;
num |= num >> 4u;
num |= num >> 8u;
num |= num >> 16u;
return ++num;
}
/* ------------------------------------------------------------------------------------------------
* Retrieve the maximum value of a fundamental type.
*/
template < typename T > constexpr T MaxOf() noexcept
{
return std::numeric_limits< T >::max();
}
/* ------------------------------------------------------------------------------------------------
* Retrieve the minimum value of a fundamental type.
*/
template < typename T > constexpr T MinOf() noexcept
{
return std::numeric_limits< T >::min();
}
/* ------------------------------------------------------------------------------------------------
* Perform an equality comparison between two values taking into account floating point issues.
*/
template < typename T, typename U > struct EpsCmp
{
static inline bool EQ(const T & a, const U & b) { return abs(a - b) <= 0; }
static inline bool LT(const T & a, const U & b) { return !EQ(a, b) && (a < b); }
static inline bool GT(const T & a, const U & b) { return !EQ(a, b) && (a > b); }
static inline bool LE(const T & a, const U & b) { return EQ(a, b) || (a < b); }
static inline bool GE(const T & a, const U & b) { return EQ(a, b) || (a > b); }
};
/* ------------------------------------------------------------------------------------------------
* Perform an equality comparison between two real values taking into account floating point issues.
*/
template < > struct EpsCmp< float, float > {
static inline bool EQ(const float & a, const float & b) { return fabsf(a - b) <= 0.000001f; }
static inline bool LT(const float & a, const float & b) { return !EQ(a, b) && (a - b) < 0.000001f; }
static inline bool GT(const float & a, const float & b) { return !EQ(a, b) && (a - b) > 0.000001f; }
static inline bool LE(const float & a, const float & b) { return EQ(a, b) || (a - b) < 0.000001f; }
static inline bool GE(const float & a, const float & b) { return EQ(a, b) || (a - b) > 0.000001f; }
};
/* ------------------------------------------------------------------------------------------------
* Perform an equality comparison between two real values taking into account floating point issues.
*/
template < > struct EpsCmp< double, double > {
static inline bool EQ(const double & a, const double & b) { return fabs(a - b) <= 0.000000001; }
static inline bool LT(const double & a, const double & b) { return !EQ(a, b) && (a - b) < 0.000000001; }
static inline bool GT(const double & a, const double & b) { return !EQ(a, b) && (a - b) > 0.000000001; }
static inline bool LE(const double & a, const double & b) { return EQ(a, b) || (a - b) < 0.000000001; }
static inline bool GE(const double & a, const double & b) { return EQ(a, b) || (a - b) > 0.000000001; }
};
/* ------------------------------------------------------------------------------------------------
* Perform an equality comparison between two real values taking into account floating point issues.
*/
template < > struct EpsCmp< float, double > {
static inline bool EQ(const float & a, const double & b) { return fabs(static_cast< double >(a) - b) <= 0.000001; }
static inline bool LT(const float & a, const double & b) { return !EQ(a, b) && (static_cast< double >(a) - b) < 0.000001; }
static inline bool GT(const float & a, const double & b) { return !EQ(a, b) && (static_cast< double >(a) - b) > 0.000001; }
static inline bool LE(const float & a, const double & b) { return EQ(a, b) || (static_cast< double >(a) - b) < 0.000001; }
static inline bool GE(const float & a, const double & b) { return EQ(a, b) || (static_cast< double >(a) - b) > 0.000001; }
};
/* ------------------------------------------------------------------------------------------------
* Perform an equality comparison between two real values taking into account floating point issues.
*/
template < > struct EpsCmp< double, float > {
static inline bool EQ(const double & a, const float & b) { return fabs(a - static_cast< double >(b)) <= 0.000001; }
static inline bool LT(const double & a, const float & b) { return !EQ(a, b) && (a - static_cast< double >(b)) < 0.000001; }
static inline bool GT(const double & a, const float & b) { return !EQ(a, b) && (a - static_cast< double >(b)) > 0.000001; }
static inline bool LE(const double & a, const float & b) { return EQ(a, b) || (a - static_cast< double >(b)) < 0.000001; }
static inline bool GE(const double & a, const float & b) { return EQ(a, b) || (a - static_cast< double >(b)) > 0.000001; }
};
/* ------------------------------------------------------------------------------------------------
* Perform an equality comparison between two real values taking into account floating point issues.
*/
template < typename T > struct EpsCmp< float, T > {
static inline bool EQ(const float & a, const T & b) { return fabsf(a - static_cast< float >(b)) <= 0.000001f; }
static inline bool LT(const float & a, const T & b) { return !EQ(a, b) && (a - static_cast< float >(b)) < 0.000001f; }
static inline bool GT(const float & a, const T & b) { return !EQ(a, b) && (a - static_cast< float >(b)) > 0.000001f; }
static inline bool LE(const float & a, const T & b) { return EQ(a, b) || (a - static_cast< float >(b)) < 0.000001f; }
static inline bool GE(const float & a, const T & b) { return EQ(a, b) || (a - static_cast< float >(b)) > 0.000001f; }
};
/* ------------------------------------------------------------------------------------------------
* Perform an equality comparison between two real values taking into account floating point issues.
*/
template < typename T > struct EpsCmp< T, float > {
static inline bool EQ(const T & a, const float & b) { return fabsf(static_cast< float >(a) - b) <= 0.000001f; }
static inline bool LT(const T & a, const float & b) { return !EQ(a, b) && (static_cast< float >(a) - b) < 0.000001f; }
static inline bool GT(const T & a, const float & b) { return !EQ(a, b) && (static_cast< float >(a) - b) > 0.000001f; }
static inline bool LE(const T & a, const float & b) { return EQ(a, b) || (static_cast< float >(a) - b) < 0.000001f; }
static inline bool GE(const T & a, const float & b) { return EQ(a, b) || (static_cast< float >(a) - b) > 0.000001f; }
};
/* ------------------------------------------------------------------------------------------------
* Perform an equality comparison between two real values taking into account floating point issues.
*/
template < typename T > struct EpsCmp< double, T > {
static inline bool EQ(const double & a, const T & b) { return fabs(a - static_cast< double >(b)) <= 0.000000001; }
static inline bool LT(const double & a, const T & b) { return !EQ(a, b) && (a - static_cast< double >(b)) < 0.000000001; }
static inline bool GT(const double & a, const T & b) { return !EQ(a, b) && (a - static_cast< double >(b)) > 0.000000001; }
static inline bool LE(const double & a, const T & b) { return EQ(a, b) || (a - static_cast< double >(b)) < 0.000000001; }
static inline bool GE(const double & a, const T & b) { return EQ(a, b) || (a - static_cast< double >(b)) > 0.000000001; }
};
/* ------------------------------------------------------------------------------------------------
* Perform an equality comparison between two real values taking into account floating point issues.
*/
template < typename T > struct EpsCmp< T, double > {
static inline bool EQ(const T & a, const double & b) { return fabs(static_cast< double >(a) - b) <= 0.000000001; }
static inline bool LT(const T & a, const double & b) { return !EQ(a, b) && (static_cast< double >(a) - b) < 0.000000001; }
static inline bool GT(const T & a, const double & b) { return !EQ(a, b) && (static_cast< double >(a) - b) > 0.000000001; }
static inline bool LE(const T & a, const double & b) { return EQ(a, b) || (static_cast< double >(a) - b) < 0.000000001; }
static inline bool GE(const T & a, const double & b) { return EQ(a, b) || (static_cast< double >(a) - b) > 0.000000001; }
};
/* ------------------------------------------------------------------------------------------------
* Alias of precise comparison helpers.
*/
template < typename T, typename U > using ECMP = EpsCmp< typename std::decay< T >::type, typename std::decay< U >::type >;
/* ------------------------------------------------------------------------------------------------
* Perform an equality comparison between two values taking into account floating point issues.
*/
template < typename T, typename U > inline constexpr bool EpsEq(T a, U b)
{
return ECMP< T, U >::EQ(a, b);
}
/* ------------------------------------------------------------------------------------------------
* Perform an inequality comparison between two values taking into account floating point issues.
*/
template < typename T, typename U > inline constexpr bool EpsNe(T a, U b)
{
return ECMP< T, U >::NE(a, b);
}
/* ------------------------------------------------------------------------------------------------
* Perform a less than comparison between two values taking into account floating point issues.
*/
template < typename T, typename U > inline constexpr bool EpsLt(T a, U b)
{
return ECMP< T, U >::LT(a, b);
}
/* ------------------------------------------------------------------------------------------------
* Perform a greater than comparison between two values taking into account floating point issues.
*/
template < typename T, typename U > inline constexpr bool EpsGt(T a, U b)
{
return ECMP< T, U >::GT(a, b);
}
/* ------------------------------------------------------------------------------------------------
* Perform a less than or equal comparison between two values taking into account
* floating point issues.
*/
template < typename T, typename U > inline constexpr bool EpsLtEq(T a, U b)
{
return ECMP< T, U >::LE(a, b);
}
/* ------------------------------------------------------------------------------------------------
* Perform a greater than or equal comparison between two values taking into account
* floating point issues.
*/
template < typename T, typename U > inline constexpr bool EpsGtEq(T a, U b)
{
return ECMP< T, U >::GE(a, b);
}
/* ------------------------------------------------------------------------------------------------
* Utility used to convert strings to numeric values and/or backwards.
*/
template < typename T > struct ConvNum;
/* ------------------------------------------------------------------------------------------------
* Specializations for each numeric type conversion to string and/or backwards.
*/
template <> struct ConvNum< Int8 >
{
static CCStr ToStr(Int8 v);
static Int8 FromStr(CCStr s);
static Int8 FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< Uint8 >
{
static CCStr ToStr(Uint8 v);
static Uint8 FromStr(CCStr s);
static Uint8 FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< Int16 >
{
static CCStr ToStr(Int16 v);
static Int16 FromStr(CCStr s);
static Int16 FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< Uint16 >
{
static CCStr ToStr(Uint16 v);
static Uint16 FromStr(CCStr s);
static Uint16 FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< Int32 >
{
static CCStr ToStr(Int32 v);
static Int32 FromStr(CCStr s);
static Int32 FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< Uint32 >
{
static CCStr ToStr(Uint32 v);
static Uint32 FromStr(CCStr s);
static Uint32 FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< Int64 >
{
static CCStr ToStr(Int64 v);
static Int64 FromStr(CCStr s);
static Int64 FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< Uint64 >
{
static CCStr ToStr(Uint64 v);
static Uint64 FromStr(CCStr s);
static Uint64 FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< LongI >
{
static CCStr ToStr(LongI v);
static LongI FromStr(CCStr s);
static LongI FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< Ulong >
{
static CCStr ToStr(Ulong v);
static Ulong FromStr(CCStr s);
static Ulong FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< Float32 >
{
static CCStr ToStr(Float32 v);
static Float32 FromStr(CCStr s);
static Float32 FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< Float64 >
{
static CCStr ToStr(Float64 v);
static Float64 FromStr(CCStr s);
static Float64 FromStr(CCStr s, Int32 base);
};
template <> struct ConvNum< bool >
{
static CCStr ToStr(bool v);
static bool FromStr(CCStr s);
static bool FromStr(CCStr s, Int32 base);
};
/* ------------------------------------------------------------------------------------------------
* Utility used to cast between specialized types and perform proper conversion.
*/
template < typename T > struct ConvTo
{
// --------------------------------------------------------------------------------------------
static constexpr T Min = std::numeric_limits< T >::min();
static constexpr T Max = std::numeric_limits< T >::max();
// --------------------------------------------------------------------------------------------
template < typename U > static inline T From(U v)
{
if (v > Max)
{
return Max;
}
else if (v < Min)
{
return Min;
}
return static_cast< T >(v);
}
};
/* ------------------------------------------------------------------------------------------------
* Convert a string to 8/16/32 bit signed integers.
*/
template <> template <> inline Int8 ConvTo< Int8 >::From< CCStr >(CCStr v)
{
return ConvNum< Int8 >::FromStr(v);
}
template <> template <> inline Int16 ConvTo< Int16 >::From< CCStr >(CCStr v)
{
return ConvNum< Int16 >::FromStr(v);
}
template <> template <> inline Int32 ConvTo< Int32 >::From< CCStr >(CCStr v)
{
return ConvNum< Int32 >::FromStr(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert a string to 8/16/32 bit unsigned integers.
*/
template <> template <> inline Uint8 ConvTo< Uint8 >::From< CCStr >(CCStr v)
{
return ConvNum< Uint8 >::FromStr(v);
}
template <> template <> inline Uint16 ConvTo< Uint16 >::From< CCStr >(CCStr v)
{
return ConvNum< Uint16 >::FromStr(v);
}
template <> template <> inline Uint32 ConvTo< Uint32 >::From< CCStr >(CCStr v)
{
return ConvNum< Uint32 >::FromStr(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert to 8 bit signed integer from any unsigned integer.
*/
template <> template <> inline Int8 ConvTo< Int8 >::From< Uint8 >(Uint8 v)
{
return (v >= static_cast< Uint8 >(Max)) ? Max : static_cast< Int8 >(v);
}
template <> template <> inline Int8 ConvTo< Int8 >::From< Uint16 >(Uint16 v)
{
return (v >= static_cast< Uint8 >(Max)) ? Max : static_cast< Int8 >(v);
}
template <> template <> inline Int8 ConvTo< Int8 >::From< Uint32 >(Uint32 v)
{
return (v >= static_cast< Uint8 >(Max)) ? Max : static_cast< Int8 >(v);
}
template <> template <> inline Int8 ConvTo< Int8 >::From< Uint64 >(Uint64 v)
{
return (v >= static_cast< Uint8 >(Max)) ? Max : static_cast< Int8 >(v);
}
template <> template <> inline Int8 ConvTo< Int8 >::From< Ulong >(Ulong v)
{
return (v >= static_cast< Uint8 >(Max)) ? Max : static_cast< Int8 >(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert to 16 bit signed integer from any unsigned integer.
*/
template <> template <> inline Int16 ConvTo< Int16 >::From< Uint8 >(Uint8 v)
{
return static_cast< Int16 >(v);
}
template <> template <> inline Int16 ConvTo< Int16 >::From< Uint16 >(Uint16 v)
{
return (v >= static_cast< Uint16 >(Max)) ? Max : static_cast< Int16 >(v);
}
template <> template <> inline Int16 ConvTo< Int16 >::From< Uint32 >(Uint32 v)
{
return (v >= static_cast< Uint16 >(Max)) ? Max : static_cast< Int16 >(v);
}
template <> template <> inline Int16 ConvTo< Int16 >::From< Uint64 >(Uint64 v)
{
return (v >= static_cast< Uint16 >(Max)) ? Max : static_cast< Int16 >(v);
}
template <> template <> inline Int16 ConvTo< Int16 >::From< Ulong >(Ulong v)
{
return (v >= static_cast< Uint16 >(Max)) ? Max : static_cast< Int16 >(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert to 32 bit signed integer from any unsigned integer.
*/
template <> template <> inline Int32 ConvTo< Int32 >::From< Uint8 >(Uint8 v)
{
return static_cast< Int32 >(v);
}
template <> template <> inline Int32 ConvTo< Int32 >::From< Uint16 >(Uint16 v)
{
return static_cast< Int32 >(v);
}
template <> template <> inline Int32 ConvTo< Int32 >::From< Uint32 >(Uint32 v)
{
return (v >= static_cast< Uint32 >(Max)) ? Max : static_cast< Int32 >(v);
}
template <> template <> inline Int32 ConvTo< Int32 >::From< Uint64 >(Uint64 v)
{
return (v >= static_cast< Uint32 >(Max)) ? Max : static_cast< Int32 >(v);
}
template <> template <> inline Int32 ConvTo< Int32 >::From< Ulong >(Ulong v)
{
return (v >= static_cast< Uint32 >(Max)) ? Max : static_cast< Int32 >(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert to 8 bit unsigned integer from any signed integer.
*/
template <> template <> inline Uint8 ConvTo< Uint8 >::From< Int8 >(Int8 v)
{
return (v <= 0) ? 0 : static_cast< Uint8 >(v);
}
template <> template <> inline Uint8 ConvTo< Uint8 >::From< Int16 >(Int16 v)
{
if (v <= 0)
{
return 0;
}
else if (v >= static_cast< Int16 >(Max))
{
return Max;
}
return static_cast< Uint8 >(v);
}
template <> template <> inline Uint8 ConvTo< Uint8 >::From< Int32 >(Int32 v)
{
if (v <= 0)
{
return 0;
}
else if (v >= static_cast< Int16 >(Max))
{
return Max;
}
return static_cast< Uint8 >(v);
}
template <> template <> inline Uint8 ConvTo< Uint8 >::From< Int64 >(Int64 v)
{
if (v <= 0)
{
return 0;
}
else if (v >= static_cast< Int16 >(Max))
{
return Max;
}
return static_cast< Uint8 >(v);
}
template <> template <> inline Uint8 ConvTo< Uint8 >::From< LongI >(LongI v)
{
if (v <= 0)
{
return 0;
}
else if (v >= static_cast< Int16 >(Max))
{
return Max;
}
return static_cast< Uint8 >(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert to 16 bit unsigned integer from any signed integer.
*/
template <> template <> inline Uint16 ConvTo< Uint16 >::From< Int8 >(Int8 v)
{
return (v <= 0) ? 0 : static_cast< Uint16 >(v);
}
template <> template <> inline Uint16 ConvTo< Uint16 >::From< Int16 >(Int16 v)
{
return (v <= 0) ? 0 : static_cast< Uint16 >(v);
}
template <> template <> inline Uint16 ConvTo< Uint16 >::From< Int32 >(Int32 v)
{
if (v <= 0)
{
return 0;
}
else if (v >= static_cast< Int32 >(Max))
{
return Max;
}
return static_cast< Uint16 >(v);
}
template <> template <> inline Uint16 ConvTo< Uint16 >::From< Int64 >(Int64 v)
{
if (v <= 0)
{
return 0;
}
else if (v >= static_cast< Int32 >(Max))
{
return Max;
}
return static_cast< Uint16 >(v);
}
template <> template <> inline Uint16 ConvTo< Uint16 >::From< LongI >(LongI v)
{
if (v <= 0)
{
return 0;
}
else if (v >= static_cast< Int32 >(Max))
{
return Max;
}
return static_cast< Uint16 >(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert to 32 bit unsigned integer from any signed integer.
*/
template <> template <> inline Uint32 ConvTo< Uint32 >::From< Int8 >(Int8 v)
{
return (v <= 0) ? 0 : static_cast< Uint32 >(v);
}
template <> template <> inline Uint32 ConvTo< Uint32 >::From< Int16 >(Int16 v)
{
return (v <= 0) ? 0 : static_cast< Uint32 >(v);
}
template <> template <> inline Uint32 ConvTo< Uint32 >::From< Int32 >(Int32 v)
{
return (v <= 0) ? 0 : static_cast< Uint32 >(v);
}
template <> template <> inline Uint32 ConvTo< Uint32 >::From< Int64 >(Int64 v)
{
if (v <= 0)
{
return 0;
}
else if (v >= static_cast< Int64 >(Max))
{
return Max;
}
return static_cast< Uint32 >(v);
}
template <> template <> inline Uint32 ConvTo< Uint32 >::From< LongI >(LongI v)
{
#if (ULONG_MAX > UINT_MAX)
if (v <= 0)
{
return 0;
}
else if (v >= static_cast< Int64 >(Max))
{
return Max;
}
return static_cast< Uint32 >(v);
#else
return (v <= 0) ? 0 : static_cast< Uint32 >(v);
#endif
}
/* ------------------------------------------------------------------------------------------------
* Convert to signed integer from 32 bit floating point number.
*/
template <> template <> inline Int8 ConvTo< Int8 >::From< Float32 >(Float32 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Int8 >(v);
}
template <> template <> inline Int16 ConvTo< Int16 >::From< Float32 >(Float32 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Int16 >(v);
}
template <> template <> inline Int32 ConvTo< Int32 >::From< Float32 >(Float32 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Int32 >(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert to signed integer from 64 bit floating point number.
*/
template <> template <> inline Int8 ConvTo< Int8 >::From< Float64 >(Float64 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Int8 >(v);
}
template <> template <> inline Int16 ConvTo< Int16 >::From< Float64 >(Float64 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Int16 >(v);
}
template <> template <> inline Int32 ConvTo< Int32 >::From< Float64 >(Float64 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Int32 >(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert to unsigned integer from 32 bit floating point number.
*/
template <> template <> inline Uint8 ConvTo< Uint8 >::From< Float32 >(Float32 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Uint8 >(v);
}
template <> template <> inline Uint16 ConvTo< Uint16 >::From< Float32 >(Float32 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Uint16 >(v);
}
template <> template <> inline Uint32 ConvTo< Uint32 >::From< Float32 >(Float32 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Uint32 >(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert to unsigned integer from 64 bit floating point number.
*/
template <> template <> inline Uint8 ConvTo< Uint8 >::From< Float64 >(Float64 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Uint8 >(v);
}
template <> template <> inline Uint16 ConvTo< Uint16 >::From< Float64 >(Float64 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Uint16 >(v);
}
template <> template <> inline Uint32 ConvTo< Uint32 >::From< Float64 >(Float64 v)
{
if (EpsLt(v, Min))
{
return Min;
}
else if (EpsGt(v, Max))
{
return Max;
}
return static_cast< Uint32 >(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert other numeric values to 64 bit signed integer.
*/
template <> struct ConvTo< Int64 >
{
// --------------------------------------------------------------------------------------------
static constexpr Int64 Min = std::numeric_limits< Int64 >::min();
static constexpr Int64 Max = std::numeric_limits< Int64 >::max();
// --------------------------------------------------------------------------------------------
template < typename T > static inline Int64 From(T v)
{
return static_cast< Int64 >(v);
}
};
// ------------------------------------------------------------------------------------------------
template <> inline Int64 ConvTo< Int64 >::From< CCStr >(CCStr v)
{
return ConvNum< Int64 >::FromStr(v);
}
// ------------------------------------------------------------------------------------------------
template <> inline Int64 ConvTo< Int64 >::From< Uint64 >(Uint64 v)
{
return (v >= static_cast< Uint64 >(Max)) ? Max : static_cast< Int64 >(v);
}
#if (ULONG_MAX > UINT_MAX)
// ------------------------------------------------------------------------------------------------
template <> inline Int64 ConvTo< Int64 >::From< Ulong >(Ulong v)
{
return (v >= static_cast< Ulong >(Max)) ? Max : static_cast< Int64 >(v);
}
#endif
/* ------------------------------------------------------------------------------------------------
* Convert other numeric values to 64 bit unsigned integer.
*/
template <> struct ConvTo< Uint64 >
{
// --------------------------------------------------------------------------------------------
static constexpr Uint64 Min = std::numeric_limits< Uint64 >::min();
static constexpr Uint64 Max = std::numeric_limits< Uint64 >::max();
// --------------------------------------------------------------------------------------------
template < typename T > static inline Uint64 From(T v)
{
return (v <= static_cast< T >(0)) ? 0 : static_cast< Uint64 >(v);
}
};
// ------------------------------------------------------------------------------------------------
template <> inline Uint64 ConvTo< Uint64 >::From< CCStr >(CCStr v)
{
return ConvNum< Uint64 >::FromStr(v);
}
// ------------------------------------------------------------------------------------------------
template <> inline Uint64 ConvTo< Uint64 >::From< Float32 >(Float32 v)
{
return From(ConvTo< Int64 >::From(v));
}
// ------------------------------------------------------------------------------------------------
template <> inline Uint64 ConvTo< Uint64 >::From< Float64 >(Float64 v)
{
return From(ConvTo< Int64 >::From(v));
}
/* ------------------------------------------------------------------------------------------------
* Convert other numeric values to signed long integer.
*/
template <> struct ConvTo< LongI >
{
// --------------------------------------------------------------------------------------------
static constexpr LongI Min = std::numeric_limits< LongI >::min();
static constexpr LongI Max = std::numeric_limits< LongI >::max();
// --------------------------------------------------------------------------------------------
template < typename T > static inline LongI From(T v)
{
return static_cast< LongI >(v);
}
};
// ------------------------------------------------------------------------------------------------
template <> inline LongI ConvTo< LongI >::From< CCStr >(CCStr v)
{
return ConvNum< LongI >::FromStr(v);
}
// ------------------------------------------------------------------------------------------------
#if (ULONG_MAX <= UINT_MAX)
template <> inline LongI ConvTo< LongI >::From< Uint32 >(Uint32 v)
{
return (v >= static_cast< Uint32 >(Max)) ? Max : static_cast< LongI >(v);
}
#endif
// ------------------------------------------------------------------------------------------------
template <> inline LongI ConvTo< LongI >::From< Uint64 >(Uint64 v)
{
return (v >= static_cast< Uint64 >(Max)) ? Max : static_cast< LongI >(v);
}
// ------------------------------------------------------------------------------------------------
template <> inline LongI ConvTo< LongI >::From< Ulong >(Ulong v)
{
return (v >= static_cast< Ulong >(Max)) ? Max : static_cast< LongI >(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert other numeric values to unsigned long integer.
*/
template <> struct ConvTo< Ulong >
{
// --------------------------------------------------------------------------------------------
static constexpr Ulong Min = std::numeric_limits< Ulong >::min();
static constexpr Ulong Max = std::numeric_limits< Ulong >::max();
// --------------------------------------------------------------------------------------------
template < typename T > static inline Ulong From(T v)
{
return (v <= static_cast< T >(0)) ? 0 : static_cast< Ulong >(v);
}
};
// ------------------------------------------------------------------------------------------------
template <> inline Ulong ConvTo< Ulong >::From< CCStr >(CCStr v)
{
return ConvNum< Ulong >::FromStr(v);
}
// ------------------------------------------------------------------------------------------------
#if (ULONG_MAX <= UINT_MAX)
template <> inline Ulong ConvTo< Ulong >::From< Int64 >(Int64 v)
{
if (v <= 0)
{
return Min;
}
else if (v >= static_cast< Int64 >(Max))
{
return Max;
}
return static_cast< Ulong >(v);
}
template <> inline Ulong ConvTo< Ulong >::From< Uint64 >(Uint64 v)
{
return (v >= Max) ? Max : static_cast< Ulong >(v);
}
#endif
// ------------------------------------------------------------------------------------------------
template <> inline Ulong ConvTo< Ulong >::From< Float32 >(Float32 v)
{
return From(ConvTo< LongI >::From(v));
}
// ------------------------------------------------------------------------------------------------
template <> inline Ulong ConvTo< Ulong >::From< Float64 >(Float64 v)
{
return From(ConvTo< LongI >::From(v));
}
/* ------------------------------------------------------------------------------------------------
* Convert other numeric values to 32 bit floating point value.
*/
template <> struct ConvTo< Float32 >
{
// --------------------------------------------------------------------------------------------
static constexpr Float32 Min = std::numeric_limits< Float32 >::lowest();
static constexpr Float32 Max = std::numeric_limits< Float32 >::max();
// --------------------------------------------------------------------------------------------
template < typename T > static inline Float32 From(T v)
{
return static_cast< Float32 >(v);
}
};
// ------------------------------------------------------------------------------------------------
template <> inline Float32 ConvTo< Float32 >::From< CCStr >(CCStr v)
{
return ConvNum< Float32 >::FromStr(v);
}
// ------------------------------------------------------------------------------------------------
template <> inline Float32 ConvTo< Float32 >::From< Float64 >(Float64 v)
{
if (EpsGt(v, Max))
{
return Max;
}
else if (EpsLt(v, Min))
{
return Min;
}
return static_cast< Float32 >(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert other numeric values to 64 bit floating point value.
*/
template <> struct ConvTo< Float64 >
{
// --------------------------------------------------------------------------------------------
static constexpr Float64 Min = std::numeric_limits< Float64 >::lowest();
static constexpr Float64 Max = std::numeric_limits< Float64 >::max();
// --------------------------------------------------------------------------------------------
template < typename T > static inline Float64 From(T v)
{
return static_cast< Float64 >(v);
}
};
// ------------------------------------------------------------------------------------------------
template <> inline Float64 ConvTo< Float64 >::From< CCStr >(CCStr v)
{
return ConvNum< Float64 >::FromStr(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert other numeric values to boolean value.
*/
template <> struct ConvTo< bool >
{
// --------------------------------------------------------------------------------------------
template < typename T > static inline bool From(T v)
{
return static_cast< bool >(v);
}
};
// ------------------------------------------------------------------------------------------------
template <> inline bool ConvTo< bool >::From< CCStr >(CCStr v)
{
return ConvNum< bool >::FromStr(v);
}
/* ------------------------------------------------------------------------------------------------
* Convert other numeric values to string value.
*/
template <> struct ConvTo< CStr >
{
// --------------------------------------------------------------------------------------------
template < typename T > static inline CStr From(T v)
{
return const_cast< CStr >(ConvNum< T >::ToStr(v));
}
};
/* ------------------------------------------------------------------------------------------------
* Convert other numeric values to string value.
*/
template <> struct ConvTo< CCStr >
{
// --------------------------------------------------------------------------------------------
template < typename T > static inline CCStr From(T v)
{
return ConvNum< T >::ToStr(v);
}
};
/* ------------------------------------------------------------------------------------------------
* Force a value to be within a certain range.
*/
template< typename T, typename U, typename V > inline T Clamp(T val, U min, V max)
{
// Is the specified value bellow the minimum?
if (val < min)
{
return min;
}
// Is the specified value above the maximum?
else if (val > max)
{
return max;
}
// Return the value as is
return val;
}
/* ------------------------------------------------------------------------------------------------
* Force a value to be higher then than the imposed limit.
*/
template< typename T, typename U > inline T ClampMin(T val, U min)
{
// Is the specified value bellow the minimum?
if (val < min)
{
return min;
}
// Return the value as is
return val;
}
/* ------------------------------------------------------------------------------------------------
* Force a value to be smaller then than the imposed limit.
*/
template< typename T, typename U > inline T ClampMax(T val, U max)
{
// Is the specified value above the maximum?
if (val > max)
{
return max;
}
// Return the value as is
return val;
}
/* ------------------------------------------------------------------------------------------------
* Force a value to be within a certain range.
*/
template<> inline Float32 Clamp(Float32 val, Float32 min, Float32 max)
{
// Is the specified value bellow the minimum?
if (EpsLt(val, min))
{
return min;
}
// Is the specified value above the maximum?
else if (EpsGt(val, max))
{
return max;
}
// Return the value as is
return val;
}
/* ------------------------------------------------------------------------------------------------
* Force a value to be within a certain range.
*/
template<> inline Float64 Clamp(Float64 val, Float64 min, Float64 max)
{
// Is the specified value bellow the minimum?
if (EpsLt(val, min))
{
return min;
}
// Is the specified value above the maximum?
else if (EpsGt(val, max))
{
return max;
}
// Return the value as is
return val;
}
/* ------------------------------------------------------------------------------------------------
* Force a value to be the boundaries of the specified type.
*/
template < typename T, typename U > inline U ClampL(T v)
{
return ConvTo< U >::From(v);
}
/* ------------------------------------------------------------------------------------------------
* Helper class allows the use of functions with ctype style as predicate for algorithms.
*/
struct IsCType
{
// ------------------------------------------------------------------------------------------------
typedef int (*CTypeFn)(int); // The signature of a ctype function.
private:
// ------------------------------------------------------------------------------------------------
CTypeFn m_Fn; // Pointer to the actual function that does the comparison.
public:
/* ------------------------------------------------------------------------------------------------
* Base constructor.
*/
explicit IsCType(CTypeFn fn)
: m_Fn(fn)
{
/* ... */
}
/* ------------------------------------------------------------------------------------------------
* Function call operator.
*/
template < typename T > bool operator () (T c)
{
return (m_Fn(static_cast< int >(c)) != 0);
}
};
/* ------------------------------------------------------------------------------------------------
* Helper class allows the use of functions with ctype style as predicate for algorithms.
*/
struct IsNotCType
{
// ------------------------------------------------------------------------------------------------
typedef int (*CTypeFn)(int); // The signature of a ctype function.
private:
// ------------------------------------------------------------------------------------------------
CTypeFn m_Fn; // Pointer to the actual function that does the comparison.
public:
/* ------------------------------------------------------------------------------------------------
* Base constructor.
*/
explicit IsNotCType(CTypeFn fn)
: m_Fn(fn)
{
/* ... */
}
/* ------------------------------------------------------------------------------------------------
* Function call operator.
*/
template < typename T > bool operator () (T c)
{
return (m_Fn(static_cast< int >(c)) == 0);
}
};
/* ------------------------------------------------------------------------------------------------
* Utility implementing RAII to toggle a bit mask on and off at all costs.
*/
template < typename T > struct BitGuard
{
private:
/* ------------------------------------------------------------------------------------------------
* The lock to be toggled.
*/
T & m_Lock;
/* ------------------------------------------------------------------------------------------------
* The mask to be applied.
*/
T m_Mask;
public:
/* ------------------------------------------------------------------------------------------------
* Base constructor.
*/
BitGuard(T & lock, T mask)
: m_Lock(lock), m_Mask(mask)
{
// Apply the specified mask
m_Lock |= m_Mask;
}
/* ------------------------------------------------------------------------------------------------
* Destructor.
*/
~BitGuard()
{
// In case one of the bits was turned off in the meantime
m_Lock |= m_Mask;
// Now turn off all the bits in the mask
m_Lock ^= m_Mask;
}
};
// ------------------------------------------------------------------------------------------------
typedef BitGuard< Uint8 > BitGuardU8;
typedef BitGuard< Uint16 > BitGuardU16;
typedef BitGuard< Uint32 > BitGuardU32;
/* ------------------------------------------------------------------------------------------------
* RAII approach to make sure a value is assigned regardless of what exceptions are thrown.
*/
template < typename T > class AutoAssign
{
private:
// --------------------------------------------------------------------------------------------
T & m_Var; // Variable to receive the value.
T m_Val; // Value to be assigned.
public:
/* --------------------------------------------------------------------------------------------
* Base constructor.
*/
AutoAssign(T & variable, T value)
: m_Var(variable), m_Val(value)
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Base constructor.
*/
AutoAssign(T & variable, T value, T start)
: m_Var(variable), m_Val(value)
{
m_Var = start;
}
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
AutoAssign(const AutoAssign & o) = delete;
/* --------------------------------------------------------------------------------------------
* Move constructor. (disabled)
*/
AutoAssign(AutoAssign && o) = delete;
/* --------------------------------------------------------------------------------------------
* Destructor.
*/
~AutoAssign()
{
m_Var = m_Val;
}
/* --------------------------------------------------------------------------------------------
* Copy assignment operator. (disabled)
*/
AutoAssign & operator = (const AutoAssign & o) = delete;
/* --------------------------------------------------------------------------------------------
* Move assignment operator. (disabled)
*/
AutoAssign & operator = (AutoAssign && o) = delete;
/* --------------------------------------------------------------------------------------------
* Direct value assignment.
*/
template < typename U > AutoAssign & operator = (U value)
{
m_Var = value;
}
/* --------------------------------------------------------------------------------------------
* Direct value assignment.
*/
template < typename U > void Set(U value)
{
m_Val = value;
}
};
/* ------------------------------------------------------------------------------------------------
* Retrieve the string representation of a certain type.
*/
CSStr SqTypeName(SQObjectType type);
/* ------------------------------------------------------------------------------------------------
* Retrieve the string representation of a certain type from a value on the stack.
*/
String SqTypeName(HSQUIRRELVM vm, SQInteger idx);
/* ------------------------------------------------------------------------------------------------
* Create a script string instance from a buffer.
*/
Object BufferToStrObj(const Buffer & b);
/* ------------------------------------------------------------------------------------------------
* Create a script string instance from a portion of a buffer.
*/
Object BufferToStrObj(const Buffer & b, Uint32 size);
/* ------------------------------------------------------------------------------------------------
* Attempt to pop the value at the specified index on the stack as a native integer.
*/
SQInteger PopStackInteger(HSQUIRRELVM vm, SQInteger idx);
/* ------------------------------------------------------------------------------------------------
* Attempt to pop the value at the specified index on the stack as a native float.
*/
SQFloat PopStackFloat(HSQUIRRELVM vm, SQInteger idx);
} // Namespace:: SqMod
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