Integral.h

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// Copyright Onix Solutions Limited [OnixS]. All rights reserved.
//
// This software owned by Onix Solutions Limited [OnixS] and is
// protected by copyright law and international copyright treaties.
//
// Access to and use of the software is governed by the terms of the applicable
// OnixS Software Services Agreement (the Agreement) and Customer end user license
// agreements granting a non-assignable, non-transferable and non-exclusive license
// to use the software for it's own data processing purposes under the terms defined
// in the Agreement.
//
// Except as otherwise granted within the terms of the Agreement, copying or
// reproduction of any part of this source code or associated reference material
// to any other location for further reproduction or redistribution, and any
// amendments to this copyright notice, are expressly prohibited.
//
// Any reproduction or redistribution for sale or hiring of the Software not in
// accordance with the terms of the Agreement is a violation of copyright law.
//
 
#pragma once
 
#include <OnixS/ICE/BOE/ABI.h>
#include <OnixS/ICE/BOE/messaging/String.h>
 
#include <cstddef>
#include <string>
#include <type_traits>
 
ONIXS_ICEBOE_MESSAGING_NAMESPACE_BEGIN
 
typedef int8_t Int8;
typedef uint8_t UInt8;
 
typedef int16_t Int16;
typedef uint16_t UInt16;
 
typedef int32_t Int32;
typedef uint32_t UInt32;
 
typedef int64_t Int64;
typedef uint64_t UInt64;

template
<
    typename Type,
    Type Constant
>
struct IntegralConstant
{
    typedef Type Value;

    constexpr
    operator Value() const noexcept
    {
        return Constant;
    }

    constexpr
    Value operator()() const noexcept
    {
        return Constant;
    }

    constexpr
    static Value value() noexcept
    {
        return Constant;
    }
};
 

ONIXS_ICEBOE_EXPORTED
void toStr(std::string&, Int8);

inline
ONIXS_ICEBOE_NODISCARD
std::string
toStr(
    Int8 number)
{
    std::string str;
 
    toStr(str, number);
 
    return str;
}

ONIXS_ICEBOE_EXPORTED
void
toStr(
    std::string&,
    UInt8);

inline
ONIXS_ICEBOE_NODISCARD
std::string
toStr(
    UInt8 number)
{
    std::string str;
 
    toStr(str, number);
 
    return str;
}

ONIXS_ICEBOE_EXPORTED
void
toStr(
    std::string&,
    Int16);

inline
ONIXS_ICEBOE_NODISCARD
std::string
toStr(
    Int16 number)
{
    std::string str;
 
    toStr(str, number);
 
    return str;
}

ONIXS_ICEBOE_EXPORTED
void
toStr(
    std::string&,
    UInt16);

inline
ONIXS_ICEBOE_NODISCARD
std::string
toStr(
    UInt16 number)
{
    std::string str;
 
    toStr(str, number);
 
    return str;
}

ONIXS_ICEBOE_EXPORTED
void
toStr(
    std::string&,
    Int32);

inline
ONIXS_ICEBOE_NODISCARD
std::string
toStr(
    Int32 number)
{
    std::string str;
 
    toStr(str, number);
 
    return str;
}

ONIXS_ICEBOE_EXPORTED
void
toStr(
    std::string&,
    UInt32);

inline
ONIXS_ICEBOE_NODISCARD
std::string
toStr(
    UInt32 number)
{
    std::string str;
 
    toStr(str, number);
 
    return str;
}

ONIXS_ICEBOE_EXPORTED
void
toStr(
    std::string&,
    Int64);

inline
ONIXS_ICEBOE_NODISCARD
std::string
toStr(
    Int64 number)
{
    std::string str;
 
    toStr(str, number);
 
    return str;
}

ONIXS_ICEBOE_EXPORTED
void
toStr(
    std::string&,
    UInt64);

inline
ONIXS_ICEBOE_NODISCARD
std::string
toStr(
    UInt64 number)
{
    std::string str;
 
    toStr(str, number);
 
    return str;
}

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
size_t
toStr(
    Int8,
    Char*,
    size_t);
 

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
size_t
toStr(
    UInt8,
    Char*,
    size_t);

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
size_t
toStr(
    Int16,
    Char*,
    size_t);
 

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
size_t
toStr(
    UInt16,
    Char*,
    size_t);
 

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
size_t
toStr(
    Int32,
    Char*,
    size_t);
 

ONIXS_ICEBOE_EXPORTED
size_t
ONIXS_ICEBOE_NODISCARD
toStr(
    UInt32,
    Char*,
    size_t);

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
size_t
toStr(
    Int64,
    Char*,
    size_t);
 

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
size_t
toStr(
    UInt64,
    Char*,
    size_t);

template
<
    typename Type,
    Type Constant
>
inline
void
toStr(
    std::string& str,
    IntegralConstant<Type, Constant> constant)
{
    toStr(str, constant());
}

template
<
    typename Type,
    Type Constant
>
inline
ONIXS_ICEBOE_NODISCARD
std::string
toStr(
    IntegralConstant
    <Type, Constant> constant)
{
    std::string str;
 
    toStr(str, constant);
 
    return str;
}

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
bool fromStr(Int8&, const Char*, size_t) noexcept;

inline ONIXS_ICEBOE_NODISCARD
bool fromStr(Int8& value, const std::string& str) noexcept
{
    return
        fromStr(
            value,
            str.c_str(),
            str.size());
}

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
bool
fromStr(
    UInt8&,
    const Char*,
    size_t) noexcept;

inline
ONIXS_ICEBOE_NODISCARD
bool fromStr(
    UInt8& value,
    const std::string& str) noexcept
{
    return
        fromStr(
            value,
            str.c_str(),
            str.size());
}

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
bool
fromStr(
    Int16&,
    const Char*,
    size_t) noexcept;

inline
ONIXS_ICEBOE_NODISCARD
bool fromStr(
    Int16& value,
    const std::string& str) noexcept
{
    return
        fromStr(
            value,
            str.c_str(),
            str.size());
}

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
bool
fromStr(
    UInt16&,
    const Char*,
    size_t) noexcept;

inline ONIXS_ICEBOE_NODISCARD
bool fromStr(
    UInt16& value,
    const std::string& str) noexcept
{
    return
        fromStr(
            value,
            str.c_str(),
            str.size());
}

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
bool
fromStr(
    Int32&,
    const Char*,
    size_t) noexcept;

inline
ONIXS_ICEBOE_NODISCARD
bool fromStr(
    Int32& value,
    const std::string& str) noexcept
{
    return
        fromStr(
            value,
            str.c_str(),
            str.size());
}

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
bool
fromStr(
    UInt32&,
    const Char*,
    size_t) noexcept;

inline
ONIXS_ICEBOE_NODISCARD
bool fromStr(
    UInt32& value,
    const std::string& str) noexcept
{
    return
        fromStr(
            value,
            str.c_str(),
            str.size());
}

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
bool
fromStr(
    Int64&,
    const Char*,
    size_t) noexcept;

inline
ONIXS_ICEBOE_NODISCARD
bool fromStr(
    Int64& value,
    const std::string& str) noexcept
{
    return
        fromStr(
            value,
            str.c_str(),
            str.size());
}

ONIXS_ICEBOE_EXPORTED
ONIXS_ICEBOE_NODISCARD
bool
fromStr(
    UInt64&,
    const Char*,
    size_t) noexcept;

inline
ONIXS_ICEBOE_NODISCARD
bool fromStr(
    UInt64& value,
    const std::string& str) noexcept
{
    return
        fromStr(
            value,
            str.c_str(),
            str.size());
}

template <typename Type>
struct IsOtherInteger
    : std::integral_constant<bool,
        std::is_integral<Type>::value
        && !std::is_same<Type, bool>::value
        && !std::is_same<Type, char>::value
        && !std::is_same<Type, wchar_t>::value
        && !std::is_same<Type, char16_t>::value
        && !std::is_same<Type, char32_t>::value
#if defined(__cpp_char8_t)
        && !std::is_same<Type, char8_t>::value
#endif
        && !std::is_same<Type, Int8>::value && !std::is_same<Type, UInt8>::value
        && !std::is_same<Type, Int16>::value && !std::is_same<Type, UInt16>::value
        && !std::is_same<Type, Int32>::value && !std::is_same<Type, UInt32>::value
        && !std::is_same<Type, Int64>::value && !std::is_same<Type, UInt64>::value>
{
};

template <typename Type>
using WideInteger = typename std::conditional<std::is_signed<Type>::value, Int64, UInt64>::type;

template <typename Type, typename = typename std::enable_if<IsOtherInteger<Type>::value>::type>
inline
void
toStr(
    std::string& str,
    Type number)
{
    toStr(str, static_cast<WideInteger<Type>>(number));
}

template <typename Type, typename = typename std::enable_if<IsOtherInteger<Type>::value>::type>
inline
ONIXS_ICEBOE_NODISCARD
std::string
toStr(
    Type number)
{
    return toStr(static_cast<WideInteger<Type>>(number));
}

template <typename Type, typename = typename std::enable_if<IsOtherInteger<Type>::value>::type>
inline
ONIXS_ICEBOE_NODISCARD
size_t
toStr(
    Type number,
    Char* buffer,
    size_t size)
{
    return toStr(static_cast<WideInteger<Type>>(number), buffer, size);
}

template <typename Type, typename = typename std::enable_if<IsOtherInteger<Type>::value>::type>
inline
ONIXS_ICEBOE_NODISCARD
bool
fromStr(
    Type& value,
    const Char* buffer,
    size_t size) noexcept
{
    WideInteger<Type> parsed = 0;
 
    if(!fromStr(parsed, buffer, size))
        return false;
 
    // Reject values that do not survive the conversion to `Type`.
    if(static_cast<WideInteger<Type>>(static_cast<Type>(parsed)) != parsed)
        return false;
 
    value = static_cast<Type>(parsed);
    return true;
}

template <typename Type, typename = typename std::enable_if<IsOtherInteger<Type>::value>::type>
inline
ONIXS_ICEBOE_NODISCARD
bool
fromStr(
    Type& value,
    const std::string& str) noexcept
{
    return fromStr(value, str.c_str(), str.size());
}
 
ONIXS_ICEBOE_MESSAGING_NAMESPACE_END