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1 /* |
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2 * Copyright (c) 2004-2008 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 using System; |
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19 using System.Collections; |
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20 using SymBuildParsingLib.Tree; |
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21 using SymBuildParsingLib.Token; |
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22 |
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23 namespace SymBuildParsingLib.Parser.Framework.Workers |
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24 { |
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25 public abstract class SymParserWorker |
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26 { |
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27 #region Enumerations |
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28 public enum TTokenConsumptionType |
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29 { |
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30 ETokenNotConsumed = 0, |
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31 ETokenConsumed |
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32 }; |
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33 #endregion |
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34 |
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35 #region Constructors & destructor |
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36 public SymParserWorker( SymParserWorkerContext aContext ) |
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37 : this( aContext, 0 ) |
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38 { |
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39 } |
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40 |
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41 public SymParserWorker( SymParserWorkerContext aContext, int aPriority ) |
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42 { |
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43 iWorkerContext = aContext; |
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44 iPriority = aPriority; |
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45 } |
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46 #endregion |
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47 |
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48 #region API |
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49 public virtual SymParserWorker.TTokenConsumptionType OfferToken( SymToken aToken ) |
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50 { |
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51 SymParserWorker.TTokenConsumptionType consumptionType = TTokenConsumptionType.ETokenNotConsumed; |
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52 // |
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53 int count = iChildren.Count; |
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54 for( int i=0; i<count; i++ ) |
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55 { |
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56 SymParserWorker worker = this[ i ]; |
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57 consumptionType = worker.OfferToken( aToken ); |
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58 // |
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59 if ( consumptionType == SymParserWorker.TTokenConsumptionType.ETokenConsumed ) |
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60 { |
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61 break; |
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62 } |
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63 } |
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64 // |
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65 return consumptionType; |
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66 } |
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67 #endregion |
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68 |
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69 #region Worker related |
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70 public virtual void RemoveSelf() |
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71 { |
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72 if ( WorkerContext.Parent != null ) |
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73 { |
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74 WorkerContext.Parent.RemoveChild( this ); |
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75 } |
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76 } |
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77 |
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78 public virtual void AddChild( SymParserWorker aWorker ) |
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79 { |
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80 iChildren.Add( aWorker ); |
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81 } |
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82 |
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83 public virtual void RemoveChild( SymParserWorker aWorker ) |
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84 { |
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85 iChildren.Remove( aWorker ); |
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86 } |
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87 |
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88 public int ChildCount |
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89 { |
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90 get { return iChildren.Count; } |
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91 } |
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92 |
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93 public SymParserWorker this[ int aIndex ] |
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94 { |
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95 get { return (SymParserWorker) iChildren[ aIndex ]; } |
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96 } |
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97 #endregion |
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98 |
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99 #region Properties |
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100 public int Priority |
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101 { |
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102 get { return iPriority; } |
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103 } |
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104 |
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105 public SymParserWorkerContext WorkerContext |
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106 { |
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107 get { return iWorkerContext; } |
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108 } |
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109 #endregion |
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110 |
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111 #region Data members |
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112 private readonly SymParserWorkerContext iWorkerContext; |
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113 private int iPriority = 0; |
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114 private ArrayList iChildren = new ArrayList(2); |
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115 #endregion |
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116 } |
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117 } |