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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: Defines the more complete set of operations on the string_t defined
// These should be used instead of direct manipulation to allow more
// flexibility in future ports or optimization.
//
// $NoKeywords: $
//=============================================================================//
#ifndef STRING_T_H
#define STRING_T_H
#if defined( _WIN32 )
#pragma once
#endif
#ifndef NO_STRING_T
#ifdef WEAK_STRING_T
typedef int string_t;
//-----------------------------------------------------------------------------
// Purpose: The correct way to specify the NULL string as a constant.
//-----------------------------------------------------------------------------
#define NULL_STRING 0
//-----------------------------------------------------------------------------
// Purpose: Given a string_t, make a C string. By convention the result string
// pointer should be considered transient and should not be stored.
//-----------------------------------------------------------------------------
#define STRING( offset ) ( ( offset ) ? reinterpret_cast<const char *>( offset ) : "" )
//-----------------------------------------------------------------------------
// Purpose: Given a C string, obtain a string_t
//-----------------------------------------------------------------------------
#define MAKE_STRING( str ) ( ( *str != 0 ) ? reinterpret_cast<int>( str ) : 0 )
//-----------------------------------------------------------------------------
#define IDENT_STRINGS( s1, s2 ) *((void **)&(s1)) == *((void **)&(s2))
//-----------------------------------------------------------------------------
#else // Strong string_t
//-----------------------------------------------------------------------------
struct string_t
{
public:
bool operator!() const { return ( pszValue == NULL ); }
bool operator==( const string_t &rhs ) const { return ( pszValue == rhs.pszValue ); }
bool operator!=( const string_t &rhs ) const { return ( pszValue != rhs.pszValue ); }
bool operator<( const string_t &rhs ) const { return ((void *)pszValue < (void *)rhs.pszValue ); }
const char *ToCStr() const { return ( pszValue ) ? pszValue : ""; }
protected:
const char *pszValue;
};
//-----------------------------------------------------------------------------
struct castable_string_t : public string_t // string_t is used in unions, hence, no constructor allowed
{
castable_string_t() { pszValue = NULL; }
castable_string_t( const char *pszFrom ) { pszValue = (pszFrom && *pszFrom) ? pszFrom : 0; }
};
//-----------------------------------------------------------------------------
// Purpose: The correct way to specify the NULL string as a constant.
//-----------------------------------------------------------------------------
#define NULL_STRING castable_string_t()
//-----------------------------------------------------------------------------
// Purpose: Given a string_t, make a C string. By convention the result string
// pointer should be considered transient and should not be stored.
//-----------------------------------------------------------------------------
#define STRING( string_t_obj ) (string_t_obj).ToCStr()
//-----------------------------------------------------------------------------
// Purpose: Given a C string, obtain a string_t
//-----------------------------------------------------------------------------
#define MAKE_STRING( c_str ) castable_string_t( c_str )
//-----------------------------------------------------------------------------
#define IDENT_STRINGS( s1, s2 ) *((void **)&(s1)) == *((void **)&(s2))
//-----------------------------------------------------------------------------
inline void NetworkVarConstruct( string_t &x ) { x = NULL_STRING; }
#endif
#else // NO_STRING_T
typedef const char *string_t;
#define NULL_STRING 0
#define STRING( c_str ) ( c_str )
#define MAKE_STRING( c_str ) ( c_str )
#define IDENT_STRINGS( s1, s2 ) *((void **)&(s1)) == *((void **)&(s2))
#endif // NO_STRING_T
//=============================================================================
#endif // STRING_T_H
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