//???2016?and?later:?Unicode?Inc.?and?others.
//?License?&?terms?of?use:?http://www.unicode.org/copyright.html
/*
*******************************************************************************
*???Copyright?（C）?2011-2012?International?Business?Machines
*???Corporation?and?others.??All?Rights?Reserved.
*******************************************************************************
*???file?name:??appendable.cpp
*???encoding:???UTF-8
*???tab?size:???8?（not?used）
*???indentation:4
*
*???created?on:?2010dec07
*???created?by:?Markus?W.?Scherer
*/

#include?“unicode/utypes.h“
#include?“unicode/appendable.h“
#include?“unicode/utf16.h“

U_NAMESPACE_BEGIN

Appendable::~Appendable（）?{}

UBool
Appendable::appendCodePoint（UChar32?c）?{
????if（c<=0xffff）?{
????????return?appendCodeUnit（（UChar）c）;
????}?else?{
????????return?appendCodeUnit（U16_LEAD（c））?&&?appendCodeUnit（U16_TRAIL（c））;
????}
}

UBool
Appendable::appendString（const?UChar?*s?int32_t?length）?{
????if（length<0）?{
????????UChar?c;
????????while（（c=*s++）!=0）?{
????????????if（!appendCodeUnit（c））?{
????????????????return?FALSE;
????????????}
????????}
????}?else?if（length>0）?{
????????const?UChar?*limit=s+length;
????????do?{
????????????if（!appendCodeUnit（*s++））?{
????????????????return?FALSE;
????????????}
????????}?while（s????}
????return?TRUE;
}

UBool
Appendable::reserveAppendCapacity（int32_t?/*appendCapacity*/）?{
????return?TRUE;
}

UChar?*
Appendable::getAppendBuffer（int32_t?minCapacity
????????????????????????????int32_t?/*desiredCapacityHint*/
????????????????????????????UChar?*scratch?int32_t?scratchCapacity
????????????????????????????int32_t?*resultCapacity）?{
????if（minCapacity<1?||?scratchCapacity????????*resultCapacity=0;
????????return?NULL;
????}
????*resultCapacity=scratchCapacity;
????return?scratch;
}

//?UnicodeStringAppendable?is?implemented?in?unistr.cpp.

U_NAMESPACE_END