Gaudi::Details::SharedString Class Reference

std::string wrapper for static strings where identical values actually share the memory. More...

#include </builds/gaudi/Gaudi/GaudiCoreSvc/src/JobOptionsSvc/PropertyId.h>

Collaboration diagram for Gaudi::Details::SharedString:

Public Member Functions
	SharedString (std::string_view s={})
	Create a new SharedString checking if the value is already in the shared storage otherwise adding it. More...
	operator std::string () const
	operator std::string_view () const
bool	operator== (std::string_view other) const
bool	operator== (const SharedString &other) const
template<typename T >
bool	operator== (const T &other) const

Static Private Member Functions
static const std::string *	get (std::string_view s)

Private Attributes
const std::string *	m_s

Static Private Attributes
static std::unordered_set< std::string >	storage

Detailed Description

std::string wrapper for static strings where identical values actually share the memory.

This class is useful when dealing with several duplicated strings so that the actual value is kept in memory only once and all the SharedString instances point to it.

SharedString is automatically comparable and convertible to std::string.

Definition at line 35 of file PropertyId.h.

Constructor & Destructor Documentation

SharedString()

Gaudi::Details::SharedString::SharedString ( std::string_view  s = {} )

inline

Create a new SharedString checking if the value is already in the shared storage otherwise adding it.

Definition at line 39 of file PropertyId.h.

{} ) : m_s{ SharedString::get( s ) } {}

Member Function Documentation

get()

static const std::string* Gaudi::Details::SharedString::get ( std::string_view  s )

inlinestaticprivate

Definition at line 55 of file PropertyId.h.

                                                    {
      if ( s.empty() ) { return {}; }
      return &*( storage.emplace( s ).first );
    }

operator std::string()

Gaudi::Details::SharedString::operator std::string ( ) const

inline

Definition at line 41 of file PropertyId.h.

{ return *m_s; }

operator std::string_view()

Gaudi::Details::SharedString::operator std::string_view ( ) const

inline

Definition at line 42 of file PropertyId.h.

{ return *m_s; }

operator==() [1/3]

bool Gaudi::Details::SharedString::operator== ( const SharedString &  other ) const

inline

Definition at line 45 of file PropertyId.h.

{ return m_s == other.m_s; }

operator==() [2/3]

template<typename T >

bool Gaudi::Details::SharedString::operator== ( const T &  other ) const

inline

Definition at line 48 of file PropertyId.h.

                                            {
      return *m_s == other;
    }

operator==() [3/3]

bool Gaudi::Details::SharedString::operator== ( std::string_view  other ) const

inline

Definition at line 44 of file PropertyId.h.

{ return *m_s == other; }

Member Data Documentation

m_s

const std::string* Gaudi::Details::SharedString::m_s

private

Definition at line 53 of file PropertyId.h.

storage

std::unordered_set< std::string > Gaudi::Details::SharedString::storage

staticprivate

Definition at line 60 of file PropertyId.h.

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The documentation for this class was generated from the following files:

• GaudiCoreSvc/src/JobOptionsSvc/PropertyId.h
• GaudiCoreSvc/src/JobOptionsSvc/PropertyId.cpp