1 // pod_lexer.h

     2 // 

     3 // Copyright (c) 2009 - 2010 Accenture. All rights reserved.

     4 // This component and the accompanying materials are made available

     5 // under the terms of the "Eclipse Public License v1.0"

     6 // which accompanies this distribution, and is available

     7 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 // 

     9 // Initial Contributors:

    10 // Accenture - Initial contribution

    11 //

    12 

    13 #ifndef __POD_LEXER_H__

    14 #define __POD_LEXER_H__

    15 

    16 #include <e32std.h>

    17 

    18 const TInt KMaxNestedAttributes = 16;

    19 

    20 

    21 /**

    22  * Responsible for understanding POD interior sequences (B<bold>, I<italic>, etc.).

    23  */

    24 class TPodLexer

    25 	{

    26 public:

    27 	enum TTokenType

    28 		{

    29 		EAttributePush,

    30 		EAttributePop,

    31 		ETextBlock,

    32 		ECodeBlock,

    33 		ELink,

    34 		EIndexEntry

    35 		};

    36 	enum TAttribute

    37 		{

    38 		ENull		= 0x00000000,

    39 		EBold		= 0x00000001,

    40 		ECode		= 0x00000002,

    41 		EItalic		= 0x00000004,

    42 		EFileName	= 0x00000008

    43 		};

    44 public:

    45 	TPodLexer(const TDesC& aString);

    46 	void NextTokenL(TPtrC& aToken, TTokenType& aTokenType, TUint& aAttributes, TBool& aEop, TBool& aEos);

    47 private:

    48 	TInt SkipToClosingAngleBracket();

    49 	TBool Eop();

    50 	TBool IsInteriorSequenceStart(TUint16& aSequenceIdentifier);

    51 	void PushAttribute(TAttribute aAttribute);

    52 	TAttribute PopAttribute();

    53 private:

    54 	TLex iLex;

    55 	TUint iAttributes;

    56 	TBuf<64> iScratch;

    57 	TFixedArray<TAttribute, KMaxNestedAttributes> iAttributeStack;

    58 	TInt iAttributeStackIndex;

    59 	};

    60 

    61 #endif // __POD_LEXER_H__