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// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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/**
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@internalComponent
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*/
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inline TBool IsSurrogate(TText a)
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{
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return 0xD800 == (a & 0xF800);
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}
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/**
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@internalComponent
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*/
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inline TBool IsHighSurrogate(TText a)
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{
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return 0xD800 == (a & 0xFC00);
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}
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/**
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@internalComponent
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*/
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inline TBool IsLowSurrogate(TText a)
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{
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return 0xDC00 == (a & 0xFC00);
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}
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/**
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@internalComponent
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*/
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inline TChar PairSurrogates(TText aHigh, TText aLow)
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{
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return ((aHigh - 0xd7f7) << 10) + aLow;
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}
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inline void SkipCombiningCharacters(TUTF32Iterator& aUTF32It)
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{
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while(!aUTF32It.AtEnd() && !::IsBaseCharacter(aUTF32It.Current()))
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{
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aUTF32It.Next();
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////
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// TUTF32Iterator
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////////////////////////////////////////////////////////////////////////////////////////////
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/**
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@internalComponent
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*/
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inline TUTF32Iterator::TUTF32Iterator() :
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iStart(0),
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iEnd(0)
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{
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}
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/**
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@internalComponent
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*/
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inline TUTF32Iterator::TUTF32Iterator(const TText16* aSingleton) :
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iStart(aSingleton),
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iEnd(aSingleton + 1),
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iCurrent(*aSingleton)
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{
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ASSERT((iCurrent & 0xFFFE) != 0xFFFE);
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ASSERT(!::IsSurrogate(*aSingleton));
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}
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/**
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@internalComponent
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*/
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inline TUTF32Iterator::TUTF32Iterator(const TText16* aStart, const TText16* aEnd) :
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iEnd(aEnd)
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{
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SetStart(aStart);
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}
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/**
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Sets the iteration to begin at aStart.
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@param aStart New starting point of iteration.
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@internalComponent
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*/
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inline void TUTF32Iterator::SetStart(const TText16* aStart)
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{
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iStart = aStart;
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if(iStart != iEnd)
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{
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if(::IsSurrogate(iEnd[-1]))
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{
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--iEnd;
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if(iStart == iEnd)
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{
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return;
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}
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}
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iCurrent = ::UTF16ToChar(iStart);
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if(iCurrent == 0xFFFF)
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{
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Next();
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}
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}
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}
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/**
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@internalComponent
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*/
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inline TUTF32Iterator::TUTF32Iterator(const TText16* aStart, const TText16* aEnd, TStartsWithValidCharacter) :
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iStart(aStart),
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iEnd(aEnd)
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{
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ASSERT(iStart < iEnd);
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if(::IsSurrogate(iEnd[-1]))
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{
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--iEnd;
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}
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iCurrent = ::UTF16ToChar(iStart);
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ASSERT(iCurrent != 0xFFFF);
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}
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/**
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@internalComponent
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*/
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inline TUTF32Iterator TUTF32Iterator::CurrentAsIterator() const
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{
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TUTF32Iterator retval(*this);
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ASSERT(iStart != iEnd);
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retval.iEnd = iStart + 1;
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return retval;
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}
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/**
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@internalComponent
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*/
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inline TBool TUTF32Iterator::AtEnd() const
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{
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return iEnd == iStart;
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}
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/**
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@internalComponent
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*/
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inline TChar TUTF32Iterator::Current() const
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{
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ASSERT(iStart != iEnd);
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ASSERT(iCurrent != 0xFFFF);
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return iCurrent;
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}
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/**
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@internalComponent
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*/
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inline const TText16* TUTF32Iterator::CurrentPosition() const
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{
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return iStart;
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}
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/**
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@internalComponent
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*/
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inline TInt TUTF32Iterator::Length() const
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{
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return iEnd - iStart;
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}
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/**
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@internalComponent
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*/
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inline TInt TUTF32Iterator::operator[](TInt a) const
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{
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return iStart[a];
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}
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////////////////////////////////////////////////////////////////////////////////////////////
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// TFoldedDecompIterator
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////////////////////////////////////////////////////////////////////////////////////////////
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/**
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@internalComponent
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*/
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inline TFoldedDecompIterator::TFoldedDecompIterator()
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{
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}
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/**
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@internalComponent
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*/
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inline TUTF32Iterator TFoldedDecompIterator::BaseIterator() const
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{
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return iOriginal;
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}
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/**
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@internalComponent
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*/
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inline void TFoldedDecompIterator::Set(const TUTF32Iterator& a)
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{
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iOriginal = a;
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}
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/**
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@internalComponent
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*/
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inline TBool TFoldedDecompIterator::IsInFoldedSequence() const
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{
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return !iFolded.AtEnd();
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}
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////////////////////////////////////////////////////////////////////////////////////////////
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// TFoldedSortedDecompIterator
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////////////////////////////////////////////////////////////////////////////////////////////
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/**
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@internalComponent
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*/
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inline TFoldedSortedDecompIterator::TFoldedSortedDecompIterator()
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{
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}
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////////////////////////////////////////////////////////////////////////////////////////////
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// TDecompositionIterator
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////////////////////////////////////////////////////////////////////////////////////////////
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/**
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@internalComponent
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*/
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inline TDecompositionIterator::TDecompositionIterator()
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{
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}
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////////////////////////////////////////////////////////////////////////////////////////////
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// TCanonicalDecompositionIterator
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////////////////////////////////////////////////////////////////////////////////////////////
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/**
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@internalComponent
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*/
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inline TCanonicalDecompositionIterator::TCanonicalDecompositionIterator()
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{
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}
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