/*

* Copyright (c) 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:

*

*/

using System;

using System.Collections.Generic;

using SymbianUtils;

using SymbianParserLib.Engine;

using SymbianParserLib.Elements;

using SymbianStructuresLib.CodeSegments;

using SymbianStackLib.Engine;

namespace SymbianStackLib.Prefixes

{

	public class StackPrefixManager

	{

		#region Constructors

        internal StackPrefixManager( StackEngine aEngine )

		{

            iEngine = aEngine;

            //

            PreparePrefixes_CodeSegment();

            PreparePrefixes_Pointer();

            //

            iParserEntries.Add( iPrefixEngine_Pointer );

            iParserEntries.Add( iPrefixEngine_CodeSegment );

        }

		#endregion

		#region API

        public void SetCustomPointer( string aPrefix )

        {

            // Find any existing custom entry and remove it

            int paraCount = iPrefixEngine_Pointer.Count;

            System.Diagnostics.Debug.Assert( paraCount >= 1 );

            if ( paraCount > 1 )

            {

                iPrefixEngine_Pointer.RemoveRange( 1 );

            }

            string prefixText = aPrefix.Trim();

            if ( prefixText != string.Empty )

            {

                ParserParagraph para = new ParserParagraph( "Dynamic_Pointer" );

                //

                prefixText += "%08x";

                //

                ParserLine l1 = ParserLine.NewSymFormat( prefixText );

                l1.SetTargetProperty( iEngine.AddressInfo, "Pointer" );

                para.Add( l1 );

                iPrefixEngine_Pointer.Add( para );

            }

        }

        public void SetCustomCodeSegment( string aPrefix )

        {

            // Find any existing custom entry and remove it

            int paraCount = iPrefixEngine_CodeSegment.Count;

            System.Diagnostics.Debug.Assert( paraCount >= 1 );

            if ( paraCount > 1 )

            {

                iPrefixEngine_CodeSegment.RemoveRange( 1 );

            }

            string prefixText = aPrefix.Trim();

            if ( prefixText != string.Empty )

            {

                ParserParagraph para = new ParserParagraph( "Dynamic_CodeSegment" );

                //

                prefixText += "%08x-%08x %S";

                //

                ParserLine l1 = ParserLine.NewSymFormat( prefixText );

                l1.SetTargetMethod( this, "TryToParseCodeSegment" );

                l1.DisableWhenComplete = false;

                para.Add( l1 );

                para.DisableWhenComplete = false;

                iPrefixEngine_CodeSegment.Add( para );

            }

        }

        #endregion

        #region Properties

        public string CodeSegment

        {

            get

            {

                string ret = string.Empty;

                //

                int count = iPrefixEngine_CodeSegment.Count;

                if ( count > 0 )

                {

                    ParserParagraph para = iPrefixEngine_CodeSegment[ count - 1 ];

                    count = para.Count;

                    if ( count > 0 )

                    {

                        ParserLine line = para[ count - 1 ];

                        //

                        if ( line.LineType == ParserLine.TLineType.ELineTypeSimpleStringMatch )

                        {

                            ret = line.OriginalValue;

                        }

                    }

                }

                //

                return ret;

            }

        }

        public string Pointer

        {

            get

            {

                string ret = "CurrentSP - ";

                //

                int count = iPrefixEngine_Pointer.Count;

                if ( count > 0 )

                {

                    ParserParagraph para = iPrefixEngine_Pointer[ count - 1 ];

                    count = para.Count;

                    if ( count > 0 )

                    {

                        ParserLine line = para[ count - 1 ];

                        //

                        if ( line.LineType == ParserLine.TLineType.ELineTypeSimpleStringMatch )

                        {

                            ret = line.OriginalValue;

                        }

                    }

                }

                //

                return ret;

            }

        }

        #endregion

        #region Internal methods

        internal void TryAgainstPrefixes( string aLine )

        {

            string line = aLine;

            foreach ( ParserEngine engine in iParserEntries )

            {

                if ( engine.OfferLine( ref line ) )

                {

                    break;

                }

            }

        }

        private void TryToParseCodeSegment( ParserLine aLine )

        {

            string line = aLine.GetCurrentLine();

            CodeSegDefinition codeSegDef = CodeSegDefinitionParser.ParseDefinition( line );

            if ( codeSegDef != null )

            {

                iEngine.CodeSegments.Add( codeSegDef );

            }

        }

        private void PreparePrefixes_Pointer()

        {

            ParserParagraph para = new ParserParagraph( "Fixed_Pointer" );

            //

            ParserLine l1 = ParserLine.NewSymFormat( "CurrentSP - 0x%08x" );

            l1.SetTargetProperty( iEngine.AddressInfo, "Pointer" );

            //

            ParserLine l2 = ParserLine.NewSymFormat( "CurrentSP - %08x" );

            l2.SetTargetProperty( iEngine.AddressInfo, "Pointer" );

            //

            ParserLine l3 = ParserLine.NewSymFormat( "CurrentSP: 0x%08x" );

            l3.SetTargetProperty( iEngine.AddressInfo, "Pointer" );

            //

            ParserLine l4 = ParserLine.NewSymFormat( "CurrentSP: %08x" );

            l4.SetTargetProperty( iEngine.AddressInfo, "Pointer" );

            //

            ParserLine l5 = ParserLine.NewSymFormat( "r12=%08x %08x %08x %08x" );

            l5[1].SetTargetProperty( iEngine.AddressInfo, "Pointer" );

            //

            ParserLine l6 = ParserLine.NewSymFormat( "Current stack pointer: 0x%08x" );

            l6.SetTargetProperty( iEngine.AddressInfo, "Pointer" );

            //

            ParserLine l7 = ParserLine.NewSymFormat( "sp: 0x%08x" );

            l7.SetTargetProperty( iEngine.AddressInfo, "Pointer" );

            //

            ParserLine l8 = ParserLine.NewSymFormat( "sp: %08x" );

            l8.SetTargetProperty( iEngine.AddressInfo, "Pointer" );

            //

            para.Add( l1, l2, l3, l4, l5, l6, l7, l8 );

            //

            iPrefixEngine_Pointer.Add( para );

        }

        private void PreparePrefixes_CodeSegment()

        {

            ParserParagraph para = new ParserParagraph( "Fixed_CodeSegment" );

            //

            ParserLine l1 = ParserLine.NewSymFormat( "%08x-%08x %S" );

            l1.SetTargetMethod( this, "TryToParseCodeSegment" );

            l1.DisableWhenComplete = false;

            //

            para.Add( l1 );

            para.DisableWhenComplete = false;

            //

            iPrefixEngine_CodeSegment.Add( para );

        }

        #endregion

        #region Constants

		#endregion

		#region Data members

        private readonly StackEngine iEngine;

        private ParserEngine iPrefixEngine_Pointer = new ParserEngine();

        private ParserEngine iPrefixEngine_CodeSegment = new ParserEngine();

        private List<ParserEngine> iParserEntries = new List<ParserEngine>();

		#endregion

    }

}