--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/menufw/hierarchynavigator/hnmetadatamodel/src/hncomplexcondition.cpp	Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,162 @@
+/*
+* Copyright (c) 2007-2008 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 <liwservicehandler.h>
+
+#include "hncomplexcondition.h"
+#include "hnliwutils.h"
+#include "hnglobals.h"
+#include "hnconditionfactory.h"
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CHnComplexCondition* CHnComplexCondition::NewL( TDesC8 & aElement )
+    {
+    CHnComplexCondition* self = new (ELeave) CHnComplexCondition();
+    CleanupStack::PushL( self );
+    self->ConstructL( aElement );
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CHnComplexCondition::CHnComplexCondition()
+    {
+    
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CHnComplexCondition::~CHnComplexCondition()
+    {
+    delete iRightCondition;
+    delete iLeftCondition;
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TBool CHnComplexCondition::CheckForOrOnTheSameLevelL( TDesC8 & aConditionString )
+    {
+    TBool ret = EFalse;
+    TLex8 lexer( aConditionString );
+    TInt lookForClosingBrace( 0 );
+    while  ( !lexer.Eos() )
+        {     
+        switch ( TUint( lexer.Get() ) )
+            {
+            case EOpeningBrace :
+                lookForClosingBrace++;
+                break;
+            case EClosingBrace :
+                lookForClosingBrace--;
+                ret = EFalse;
+                lexer.Inc( lexer.Remainder().Length() );
+                break;             
+            case ELogicalOr:
+                if (lookForClosingBrace == 0)
+                    {
+                    ret = ETrue;
+                    }
+                break;
+            }
+        }
+    return ret;
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CHnComplexCondition::ConstructL( TDesC8 & aElement )
+    {
+    TLex8 lexer( aElement );
+    TInt lookForClosingBrace( 0 );
+    while  ( !lexer.Eos() )
+        {     
+        TChar character = lexer.Get();
+        switch ( TUint( character ) )
+            {
+            case EOpeningBrace :
+                lookForClosingBrace++;
+                break;
+            case EClosingBrace :
+                lookForClosingBrace--;
+                User::LeaveIfError( lookForClosingBrace );
+                break;
+            case ELogicalAnd:
+                {
+                TPtrC8 remainder = lexer.Remainder();
+                if ( CheckForOrOnTheSameLevelL( remainder ) )
+                    {
+                    break;
+                    }
+                }
+            case ELogicalOr:
+                if (lookForClosingBrace == 0)
+                    {
+                    iOperation = (TOperator) TUint(character);
+                    TPtrC8 rightSide = lexer.Remainder();
+                    iRightCondition = HnConditionFactory::NewL( rightSide );
+                    lexer.UnGet();
+                    TPtrC8 leftSide = lexer.MarkedToken();
+                    iLeftCondition = HnConditionFactory::NewL( leftSide );
+                    lexer.Inc( lexer.Remainder().Length() );
+                    }
+                break;
+            }
+        }
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TBool CHnComplexCondition::ResultL( const CLiwGenericParamList& aQueryResults, 
+                                                                TInt aPos )
+    {
+    TBool ret = false;
+    
+    if ( iOperation == ELogicalAnd )
+        {
+        ret = iLeftCondition->ResultL(aQueryResults, aPos) && 
+            iRightCondition->ResultL(aQueryResults, aPos);
+        }
+    else if ( iOperation == ELogicalOr )
+        {
+        ret = iLeftCondition->ResultL(aQueryResults, aPos) || 
+            iRightCondition->ResultL(aQueryResults, aPos);
+        }
+    else
+        {
+        User::Leave(KErrNotFound);
+        }
+    
+    return ret;
+    }
+