/*

* 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.IO;

using System.Collections.Generic;

using System.Text;

using SymbianUtils.Tracer;

using SymbianStructuresLib.Arm;

using SymbianStructuresLib.Arm.Instructions;

using SymbianStackAlgorithmAccurate.CPU;

using SymbianStackAlgorithmAccurate.Interfaces;

using SymbianStackAlgorithmAccurate.Instructions.Types;

namespace SymbianStackAlgorithmAccurate.Instructions

{

    internal class AccInstructionList : IEnumerable<AccInstruction>

    {

        #region Constructors

        public AccInstructionList()

        {

        }

        #endregion

        #region API

        public void AddRange( IEnumerable<IArmInstruction> aInstructions )

        {

            foreach ( IArmInstruction bi in aInstructions )

            {

                AccInstruction instruction = null;

                //

                switch ( bi.AIGroup )

                {

                case TArmInstructionGroup.EGroupBranch:

                    instruction = new AccInstBranch( bi );

                    break;

                case TArmInstructionGroup.EGroupDataProcessing:

                    instruction = new AccInstDataProcessing( bi );

                    break;

                case TArmInstructionGroup.EGroupDataTransfer:

                    instruction = new AccInstDataTransfer( bi );

                    break;

                default:

                    instruction = new AccInstUnknown( bi );

                    break;

                }

                //

                iInstructions.Add( instruction );

            }

        }

        public AccInstruction Deque()

        {

            if ( Count == 0 )

            {

                throw new InvalidOperationException( "No instructions to deque" );

            }

            AccInstruction head = iInstructions[ 0 ];

            iInstructions.RemoveAt( 0 );

            return head;

        }

        internal void Prefilter( int aInstructionCountOffsetToPC )

        {

            int count = this.Count;

            for ( int i = 0; i < count; i++ )

            {

                AccInstruction instruction = iInstructions[ i ];

                //

                if ( instruction.Ignored == false )

                {

                    instruction.Prefilter( this, i, aInstructionCountOffsetToPC );

                }

            }

        }

        internal void DebugPrint( ITracer aTracer )

        {

            if ( aTracer != null )

            {

                uint address = iInstructions.Count > 0 ? iInstructions[ 0 ].Instruction.AIAddress : uint.MaxValue;

                //

                aTracer.Trace( "" );

                aTracer.Trace( "INSTRUCTIONS @ 0x{0:x8}", address );

                aTracer.Trace( "=========================" );

                //

                foreach ( AccInstruction instruction in this )

                {

                    string line = instruction.ToString();

                    aTracer.Trace( line );

                }

                //

                aTracer.Trace( "" );

            }

        }

        #endregion

        #region Properties

        public int Count

        {

            get { return iInstructions.Count; }

        }

        public TArmInstructionSet InstructionSet

        {

            get

            {

                TArmInstructionSet ret = TArmInstructionSet.EARM;

                //

                if ( iInstructions.Count > 0 )

                {

                    ret = iInstructions[ 0 ].Instruction.AIType;

                }

                //

                return ret;

            }

        }

        public AccInstruction this[ int aIndex ]

        {

            get { return iInstructions[ aIndex ]; }

        }

        #endregion

        #region From IEnumerable<AccInstruction>

        public IEnumerator<AccInstruction> GetEnumerator()

        {

            foreach ( AccInstruction instruction in iInstructions )

            {

                yield return instruction;

            }

        }

        System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()

        {

            foreach ( AccInstruction instruction in iInstructions )

            {

                yield return instruction;

            }

        }

        #endregion

        #region Data members

        private List<AccInstruction> iInstructions = new List<AccInstruction>();

        #endregion

    }

}