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/FIXEngine/FIX/StringRef.h>
#include <OnixS/FIXEngine/FIX/Timestamp.h>
 
namespace OnixS {
namespace FIX {
ONIXS_FIXENGINE_API_DECL(class, Message);
ONIXS_FIXENGINE_API_DECL(class, Group);

class
    ONIXS_FIXENGINE_API
    FieldValueRef
{
public:
    FieldValueRef();

    FieldValueRef(const FieldValueRef & other);

    bool valid() const;

    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(Double &) const;

    bool toNumber(Decimal &) const;

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

    bool
    toTimeSpan(
        TimeSpan&, TimeSpanFormat::Enum = TimeSpanFormat::HHMMSSMsec) const;

    bool toStringRef(StringRef &) const;

    StringRef toStringRef() 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 & other);
 
private:
    friend class MessageOperator;
 
    const void * impl_;
 
    const Message * container_;
 
    FieldValueRef(
        const Message *,
        const void *);
};
 
inline StringRef FieldValueRef::toStringRef() const
{
    StringRef result;
 
    if(toStringRef(result))
        return result;
    else
        return StringRef();
}
 
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);
}
}
}