symport/e32/euser/unicode/compareimp.inl
changeset 1 0a7b44b10206
child 2 806186ab5e14
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/symport/e32/euser/unicode/compareimp.inl	Thu Jun 25 15:59:54 2009 +0100
@@ -0,0 +1,252 @@
+// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Symbian Foundation License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+/**
+ @internalComponent
+*/
+inline TBool IsSurrogate(TText a) 
+	{ 
+	return 0xD800 == (a & 0xF800); 
+	}
+
+/**
+@internalComponent
+*/
+inline TBool IsHighSurrogate(TText a) 
+	{ 
+	return 0xD800 == (a & 0xFC00); 
+	}
+
+/**
+@internalComponent
+*/
+inline TBool IsLowSurrogate(TText a) 
+	{ 
+	return 0xDC00 == (a & 0xFC00); 
+	}
+
+/**
+@internalComponent
+*/
+inline TChar PairSurrogates(TText aHigh, TText aLow)
+	{
+	return ((aHigh - 0xd7f7) << 10) + aLow;
+	}
+
+inline void SkipCombiningCharacters(TUTF32Iterator& aUTF32It)
+	{
+	while(!aUTF32It.AtEnd() && !::IsBaseCharacter(aUTF32It.Current()))
+		{
+		aUTF32It.Next();
+		}
+	}
+
+////////////////////////////////////////////////////////////////////////////////////////////
+// TUTF32Iterator
+////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+@internalComponent
+*/
+inline TUTF32Iterator::TUTF32Iterator() : 
+	iStart(0), 
+	iEnd(0) 
+	{
+	}
+
+/**
+@internalComponent
+*/
+inline TUTF32Iterator::TUTF32Iterator(const TText16* aSingleton) : 
+	iStart(aSingleton), 
+	iEnd(aSingleton + 1), 
+	iCurrent(*aSingleton)
+	{
+	ASSERT((iCurrent & 0xFFFE) != 0xFFFE);
+	ASSERT(!::IsSurrogate(*aSingleton));
+	}
+
+/**
+@internalComponent
+*/
+inline TUTF32Iterator::TUTF32Iterator(const TText16* aStart, const TText16* aEnd) : 
+	iEnd(aEnd)
+	{
+	SetStart(aStart);
+	}
+
+/**
+Sets the iteration to begin at aStart.
+@param aStart New starting point of iteration.
+@internalComponent
+*/
+inline void TUTF32Iterator::SetStart(const TText16* aStart)
+	{
+	iStart = aStart;
+	if(iStart != iEnd)
+		{
+		if(::IsSurrogate(iEnd[-1]))
+			{
+			--iEnd;
+			if(iStart == iEnd)
+				{
+				return;
+				}
+			}
+		iCurrent = ::UTF16ToChar(iStart);
+		if(iCurrent == 0xFFFF)
+			{
+			Next();
+			}
+		}
+	}
+
+/**
+@internalComponent
+*/
+inline TUTF32Iterator::TUTF32Iterator(const TText16* aStart, const TText16* aEnd, TStartsWithValidCharacter) : 
+	iStart(aStart), 
+	iEnd(aEnd)
+	{
+	ASSERT(iStart < iEnd);
+	if(::IsSurrogate(iEnd[-1]))
+		{
+		--iEnd;
+		}
+	iCurrent = ::UTF16ToChar(iStart);
+	ASSERT(iCurrent != 0xFFFF);
+	}
+
+/**
+@internalComponent
+*/
+inline TUTF32Iterator TUTF32Iterator::CurrentAsIterator() const
+	{
+	TUTF32Iterator retval(*this);
+	ASSERT(iStart != iEnd);
+	retval.iEnd = iStart + 1;
+	return retval;
+	}
+
+/**
+@internalComponent
+*/
+inline TBool TUTF32Iterator::AtEnd() const
+	{
+	return iEnd == iStart;
+	}
+
+/**
+@internalComponent
+*/
+inline TChar TUTF32Iterator::Current() const
+	{
+	ASSERT(iStart != iEnd);
+	ASSERT(iCurrent != 0xFFFF);
+	return iCurrent;
+	}
+
+/**
+@internalComponent
+*/
+inline const TText16* TUTF32Iterator::CurrentPosition() const
+	{
+	return iStart;
+	}
+
+/**
+@internalComponent
+*/
+inline TInt TUTF32Iterator::Length() const
+	{
+	return iEnd - iStart;
+	}
+
+/**
+@internalComponent
+*/
+inline TInt TUTF32Iterator::operator[](TInt a) const
+	{
+	return iStart[a];
+	}
+
+////////////////////////////////////////////////////////////////////////////////////////////
+// TFoldedDecompIterator
+////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+@internalComponent
+*/
+inline TFoldedDecompIterator::TFoldedDecompIterator() 
+	{
+	}
+
+/**
+@internalComponent
+*/
+inline TUTF32Iterator TFoldedDecompIterator::BaseIterator() const 
+	{ 
+	return iOriginal; 
+	}
+
+/**
+@internalComponent
+*/
+inline void TFoldedDecompIterator::Set(const TUTF32Iterator& a)
+	{
+	iOriginal = a;
+	}
+
+/**
+@internalComponent
+*/
+inline TBool TFoldedDecompIterator::IsInFoldedSequence() const
+	{
+	return !iFolded.AtEnd();
+	}
+
+////////////////////////////////////////////////////////////////////////////////////////////
+// TFoldedSortedDecompIterator
+////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+@internalComponent
+*/
+inline TFoldedSortedDecompIterator::TFoldedSortedDecompIterator() 
+	{
+	}
+
+////////////////////////////////////////////////////////////////////////////////////////////
+// TDecompositionIterator
+////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+@internalComponent
+*/
+inline TDecompositionIterator::TDecompositionIterator() 
+	{
+	}
+
+////////////////////////////////////////////////////////////////////////////////////////////
+// TCanonicalDecompositionIterator
+////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+@internalComponent
+*/
+inline TCanonicalDecompositionIterator::TCanonicalDecompositionIterator() 
+	{
+	}
+