FieldValueRef.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/Eurex/MarketData/Numeric.h>
#include <OnixS/Eurex/MarketData/StringRef.h>
#include <OnixS/Eurex/MarketData/Timestamp.h>
 
namespace OnixS
{
    namespace Eurex
    {
        namespace MarketData
        {
 
            ONIXS_EUREX_EMDI_API_DECL (class, Message);
            ONIXS_EUREX_EMDI_API_DECL (class, Group);

            class
                ONIXS_EUREX_EMDI_API
                FieldValueRef
            {
                public:
                    FieldValueRef() noexcept;

                    FieldValueRef (const FieldValueRef& other);

                    explicit operator bool() const;

                    explicit operator std::string() const;

                    bool operator == (const FieldValueRef&) const;

                    bool operator != (const FieldValueRef&) const;

                    bool operator == (const StringRef&) const;

                    bool operator != (const StringRef&) const;

                    bool toNumber (Int32&) const;

                    bool toNumber (UInt32&) const;

                    bool toNumber (Int64&) const;

                    bool toNumber (UInt64&) const;

                    bool toNumber (Decimal&) const;

                    bool
                    toTimestamp (
                        Timestamp&,
                        TimestampFormat::Enum =
                            TimestampFormat::YYYYMMDDHHMMSSNsec) const;

                    bool toStringRef (StringRef&) const;

                    bool toChar (char&) const;

                    bool toGroup (Group&) const;

                    void toString (std::string&) const;

                    std::string toString() const;

                    FieldValueRef& operator = (const FieldValueRef&);

                    void swap(FieldValueRef&) noexcept;
 
                private:
                    friend class MessageOperator;
 
                    const void* impl_;
 
                    const Message* container_;
 
                    FieldValueRef (const Message*, const void*);
            };
 
            inline
            FieldValueRef::
            operator std::string() const
            {
                std::string str;
 
                toString (str);
 
                return str;
            }
 
            inline
            std::string
            FieldValueRef::toString() const
            {
                std::string str;
 
                toString (str);
 
                return str;
            }
 
            // More comparison operators.
 
            inline
            bool
            operator == (
                const FieldValueRef& ref,
                const std::string& str)
            {
                return ref == StringRef (str);
            }
 
            inline
            bool
            operator != (
                const FieldValueRef& ref,
                const std::string& str)
            {
                return ref != StringRef (str);
            }
 
            inline
            bool
            operator == (
                const std::string& str,
                const FieldValueRef& ref)
            {
                return ref == StringRef (str);
            }
 
            inline
            bool
            operator != (
                const std::string& str,
                const FieldValueRef& ref)
            {
                return ref != StringRef (str);
            }
 
            // More comparison operators.
 
            inline
            bool
            operator == (
                const FieldValueRef& ref,
                const char* str)
            {
                return ref == StringRef (str);
            }
 
            inline
            bool
            operator != (
                const FieldValueRef& ref,
                const char* str)
            {
                return ref != StringRef (str);
            }
 
            inline
            bool
            operator == (
                const char* str,
                const FieldValueRef& ref)
            {
                return ref == StringRef (str);
            }
 
            inline
            bool
            operator != (
                const char* str,
                const FieldValueRef& ref)
            {
                return ref != StringRef (str);
            }
        }
    }
}