101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
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/**********************************************************************/
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/** Microsoft Windows/NT **/
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/** Copyright(c) Microsoft Corp., 1991 **/
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/**********************************************************************/
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/*
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strtchar.hxx
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String classes for formatted output - definitions
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This file defines the class TCHAR_STR.
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Q.v. string.hxx and strnumer.hxx.
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FILE HISTORY:
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beng 25-Feb-1992 Created
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*/
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#ifndef _STRTCHAR_HXX_
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#define _STRTCHAR_HXX_
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#include "base.hxx"
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#include "string.hxx"
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/*************************************************************************
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NAME: TCHAR_STR_IMPL
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SYNOPSIS: Private to implementation of TCHAR_STR class
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INTERFACE: TCHAR_STR_IMPL() - ctor. Takes the character to render.
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NOTES:
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Alas, cfront 2.0 does not implement nested types.
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CAVEATS:
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Ignore this class - it is private to class TCHAR_STR.
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HISTORY:
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beng 25-Feb-1992 Created
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**************************************************************************/
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DLL_CLASS TCHAR_STR_IMPL // Private to implementation of TCHAR_STR
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{
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public:
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TCHAR _szStorage[2];
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TCHAR_STR_IMPL( TCHAR ch )
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{
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_szStorage[0] = ch;
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_szStorage[1] = 0;
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}
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};
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/*************************************************************************
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NAME: TCHAR_STR
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SYNOPSIS: String formatted as a single character
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INTERFACE: TCHAR_STR() - ctor. Takes the character to render.
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PARENT: FORWARDING_BASE
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USES: TCHAR_STR_IMPL
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NOTES:
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This class responds as an ALIAS_STR, although it doesn't inherit
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from it. It exists only to copy elsewhere, into some other string
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or formatted string. Its unusual implementation serves to
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minimize allocation overhead (I boil with rage when imagining
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allocating a two-TCHAR string in order to format a character)
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while eliminating the compound nature of existing ALLOC_STR forms,
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which would not work well within a FORMATTED_STR::Format expression.
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HISTORY:
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beng 25-Feb-1992 Created
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**************************************************************************/
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DLL_CLASS TCHAR_STR: public FORWARDING_BASE
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{
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private:
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TCHAR_STR_IMPL _impl;
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ALIAS_STR _nlsStorage;
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public:
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TCHAR_STR( TCHAR ch )
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: FORWARDING_BASE(&_nlsStorage), // yes, not yet constructed
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_impl(ch),
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_nlsStorage(_impl._szStorage) {}
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operator const ALIAS_STR &()
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{ return _nlsStorage; }
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};
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#endif // _STRTCHAR_HXX_ - end of file
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