--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/email/imap4mtm/imapsession/src/cimapatom.cpp	Thu Dec 17 08:44:11 2009 +0200
@@ -0,0 +1,172 @@
+// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#include "cimapatom.h"
+#include "cimapsessionconsts.h"
+
+CImapAtom* CImapAtom::NewLC()
+// static method
+	{
+	CImapAtom* self = new(ELeave)CImapAtom();
+	CleanupStack::PushL(self);
+	
+	// no ConstructL()
+	
+	return self;
+	}
+
+CImapAtom::CImapAtom()
+	{
+	}
+
+CImapAtom::~CImapAtom()
+	{
+	}
+
+/**
+During parsing, sets the string data of this atom.
+@param The string data of this atom.
+@param Whether the data was provided as a quoted string.
+*/
+void CImapAtom::Set(const TDesC8& aAtom, TBool aAtomIsQuoted)
+	{
+	// Save this atom in here
+	iAtom.Set(aAtom);
+	iAtomIsQuoted = aAtomIsQuoted;
+	}
+
+/**
+During parsing, sets the child of this atom.
+@param aNewChild The child of this atom.  Ownership is not transferred.
+*/
+void CImapAtom::AddChild(CImapAtom* aNewChild)
+	{
+	// Set child pointer
+	iChild=aNewChild;
+	}
+
+/**
+During parsing, sets the sibling of this atom.
+@param aNewNext The sibling of this atom.  Ownership is not transferred.
+*/
+void CImapAtom::AddNext(CImapAtom* aNewNext)
+	{
+	// Set next pointer
+	iNext=aNewNext;
+	}
+
+/**
+@return The child of this atom, or NULL if this atom has no child.  Ownership is not transferred.
+*/
+CImapAtom* CImapAtom::Child()
+	{
+	return iChild;
+	}
+
+/**
+@return The sibling of this atom, or NULL if this atom has no sibling.  Ownership is not transferred.
+*/
+CImapAtom* CImapAtom::Next()
+	{
+	return iNext;
+	}
+
+/**
+Use CompareF to match the provided string with this atom's data.
+@param aVal the string to match
+@return whether this atom's data matches the provided string.
+*/
+TBool CImapAtom::Match(const TDesC8& aVal)
+	{
+	// Compare and return result
+	return (iAtom.CompareF(aVal)==0);
+	}
+
+/**
+@param bNString whether a non-quoted "NIL" should be treated as a NULL string
+@return The string data of this atom
+*/
+const TDesC8& CImapAtom::Atom(TBool aNString)
+	{
+	if (aNString && !iAtomIsQuoted && (iAtom.CompareF(KImapTxtNil()) == 0))
+		{
+		return KNullDesC8();
+		}
+		
+	return iAtom;
+	}
+
+/**
+@return Whether the data was provided as a quoted string.
+*/
+TBool CImapAtom::AtomIsQuoted()
+	{
+	return iAtomIsQuoted;
+	}
+
+/**
+This method should only be used by CImapAtomParser.
+During parsing, a ReAllocL() may be required on the heap buffer that this atom and its 
+descendants' string data descriptor points at.
+This happens when the heap buffer needs to be expanded.
+If this causes the heap buffer's address to change, then this atom and its descendants' 
+pointer descriptors need updating.
+@param The address of the new heap buffer
+@param The address of the data within the heap buffer before the ReAllocL took place.
+*/
+void CImapAtom::FixupL(const HBufC8 *aNewBuffer, const TText8 *aOldBuffer)
+	{
+   // Fixup descriptor pointers
+	CArrayFixFlat<CImapAtom*>* atomStack = new (ELeave) CArrayFixFlat<CImapAtom*>(10);
+	CleanupStack::PushL(atomStack);
+
+	atomStack->AppendL(this);
+	CImapAtom* currentAtom;
+	while (atomStack->Count() != 0)
+   		{
+		// Pop the top atom off of the stack
+		currentAtom = (*atomStack)[atomStack->Count() - 1];
+ 		atomStack->ResizeL(atomStack->Count() - 1);
+ 
+		// Fix up the current atom
+		if (currentAtom->iAtom.Length()>0)
+			{
+			// Find offset from start of old buffer
+			TInt start=(currentAtom->iAtom.Ptr()-aOldBuffer);
+
+ 			// Make new descriptor & assign it
+			TPtrC8 bufptr(aNewBuffer->Ptr()+start,currentAtom->iAtom.Length());
+			currentAtom->iAtom.Set(bufptr); // Note that we are setting the real iAtom not the copy returned by Atom()
+			}
+ 
+		// Add the first sibling to the stack,
+		// subsequent siblings are added when this sibling is visited
+		CImapAtom* siblingAtom = currentAtom->Next();
+		if (siblingAtom)
+			{
+			atomStack->AppendL(siblingAtom);
+			}
+   
+		// Add child to the stack
+		CImapAtom* childAtom = currentAtom->Child();
+		if (childAtom)
+			{
+			atomStack->AppendL(childAtom);
+			}			
+   		}
+   
+	CleanupStack::PopAndDestroy(atomStack);
+   	}
+