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BUG#:6758
TITLE: Performance - avoid hit to performance due _checkRep

DESCRIPTION:

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#include <Pegasus/Common/LanguageTag.h>
#include <Pegasus/Common/LanguageParser.h>
#include <Pegasus/Common/AutoPtr.h>
#include <Pegasus/Common/InternalException.h>

PEGASUS_NAMESPACE_BEGIN

class LanguageTagRep
{
public:
    String tag;           // complete language tag
    String language;      // language part of language tag
    String country;       // country code part of the language tag
    String variant;       // language variant part of the language tag
};

LanguageTag::LanguageTag()
{
    _rep = 0;
}

LanguageTag::LanguageTag(const String& languageTagString)
{
    _rep = new LanguageTagRep();
    AutoPtr<LanguageTagRep> rep(_rep);

    LanguageParser::parseLanguageTag(
        languageTagString,
        _rep->language,
        _rep->country,
        _rep->variant);

    _rep->tag = languageTagString;

    rep.release();
}

LanguageTag::LanguageTag(const LanguageTag& languageTag)
{
    if (languageTag._rep)
    {
        _rep = new LanguageTagRep();
        AutoPtr<LanguageTagRep> rep(_rep);

        _rep->tag = languageTag._rep->tag;
        _rep->language = languageTag._rep->language;
        _rep->country = languageTag._rep->country;
        _rep->variant = languageTag._rep->variant;

        rep.release();
    }
    else
    {
        _rep = 0;
    }
}

LanguageTag::~LanguageTag()
{
    delete _rep;
}

LanguageTag& LanguageTag::operator=(const LanguageTag& languageTag)
{
    if (&languageTag != this)
    {
        if (!languageTag._rep)
        {
            delete _rep;
            _rep = 0;
        }
        else
        {
            if (!_rep)
            {
                _rep = new LanguageTagRep();
            }

            AutoPtr<LanguageTagRep> rep(_rep);

            _rep->tag = languageTag._rep->tag;
            _rep->language = languageTag._rep->language;
            _rep->country = languageTag._rep->country;
            _rep->variant = languageTag._rep->variant;

            rep.release();
        }
    }
    return *this;
}

String LanguageTag::getLanguage() const
{
    CheckRep(_rep);
    return _rep->language;
}

String LanguageTag::getCountry() const
{
    CheckRep(_rep);
    return _rep->country;
}

String LanguageTag::getVariant() const
{
    CheckRep(_rep);
    return _rep->variant;
}

String LanguageTag::toString() const
{
    CheckRep(_rep);
    return _rep->tag;
}

Boolean LanguageTag::operator==(const LanguageTag& languageTag) const
{
    return String::equalNoCase(toString(), languageTag.toString());
}

Boolean LanguageTag::operator!=(const LanguageTag& languageTag) const
{
    return !String::equalNoCase(toString(), languageTag.toString());
}

PEGASUS_NAMESPACE_END