1 /*

     2 * Copyright (c) 2004-2008 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "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 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 using System;

    19 using System.Text;

    20 using System.Threading;

    21 using System.Collections;

    22 using SymBuildParsingLib.Token;

    23 

    24 namespace SymBuildParsingLib.Grouper

    25 {

    26 	public class SymGrouperMastermindCache : SymTokenContainer

    27 	{

    28 		#region Constructors & destructor

    29 		public SymGrouperMastermindCache()

    30 		{

    31 		}

    32 		#endregion

    33 

    34 		#region API

    35 		public int CountByType( SymToken aToken )

    36 		{

    37 			int count = 0;

    38 			//

    39 			foreach( SymToken token in this )

    40 			{

    41 				if	( aToken.Class == token.Class &&

    42 					  aToken.Type == token.Type &&

    43 					  aToken.Value == token.Value )

    44 				{

    45 					++count;

    46 				}

    47 			}

    48 			//

    49 			return count;

    50 		}

    51 

    52 		public bool CheckTokensAreOfClass( SymToken.TClass aClass )

    53 		{

    54 			bool tokensAreAllTheSameClass = CheckTokensAreOfClass( aClass, 0 );

    55 			return tokensAreAllTheSameClass;

    56 		}

    57 

    58 		public bool CheckTokensAreOfClass( SymToken.TClass aClass, int aStartIndex )

    59 		{

    60 			bool tokensAreAllTheSameClass = true;

    61 			//

    62 			int count = Count;

    63 			for( int i=aStartIndex; i<count; i++ )

    64 			{

    65 				SymToken token = this[ i ];

    66 				//

    67 				if	( token.Class != aClass )

    68 				{

    69 					tokensAreAllTheSameClass = false;

    70 					break;

    71 				}

    72 			}

    73 			//

    74 			return tokensAreAllTheSameClass;

    75 		}

    76 

    77 		public bool CheckTokensAreOfEitherClass( SymToken.TClass aClass1, SymToken.TClass aClass2 )

    78 		{

    79 			bool tokensAreAllTheSameClass = CheckTokensAreOfEitherClass( aClass1, aClass2, 0 );

    80 			return tokensAreAllTheSameClass;

    81 		}

    82 

    83 		public bool CheckTokensAreOfEitherClass( SymToken.TClass aClass1, SymToken.TClass aClass2, int aStartIndex )

    84 		{

    85 			bool tokensAreAllTheSameClass = true;

    86 			//

    87 			int count = Count;

    88 			for( int i=aStartIndex; i<count; i++ )

    89 			{

    90 				SymToken token = this[ i ];

    91 				//

    92 				if	( !(token.Class == aClass1 || token.Class == aClass2 ) )

    93 				{

    94 					tokensAreAllTheSameClass = false;

    95 					break;

    96 				}

    97 			}

    98 			//

    99 			return tokensAreAllTheSameClass;

   100 		}

   101 

   102 		public void MergeAllTokensWithinRange( int aStartIndex, int aEndIndex, bool aMergeInContinuations, bool aForceMerge )

   103 		{

   104 			int count = Count;

   105 			//

   106 			System.Diagnostics.Debug.Assert( count > aStartIndex );

   107 			System.Diagnostics.Debug.Assert( aEndIndex < count );

   108 			

   109 			// Have to do this in two passes to ensure token

   110 			// text remains from left to right.

   111 			SymToken startingToken = this[ aStartIndex++ ];

   112 			if	( aForceMerge == false )

   113 			{

   114 				// Not force-merging, so need to find a valid combinable starting element

   115 				while( startingToken.CombiningAllowed == false && aStartIndex < aEndIndex )

   116 				{

   117 					startingToken = this[ ++aStartIndex ];

   118 				}

   119 			}

   120 

   121 			// First pass - join tokens

   122 			for( int i=aStartIndex; i<=aEndIndex; i++ )

   123 			{

   124 				SymToken thisToken = this[ i ];

   125 				

   126 				// Ignore continuations during merging

   127 				if	( thisToken.Class != SymToken.TClass.EClassContinuation || aMergeInContinuations )

   128 				{

   129 					if	( aForceMerge == false )

   130 					{

   131 						startingToken.Combine( thisToken );

   132 					}

   133 					else

   134 					{

   135 						startingToken.ForceCombine( thisToken );

   136 					}

   137 				}

   138 			}

   139 

   140 			// Second pass - discard merged tokens.

   141 			for( int i=aEndIndex-1; i>=aStartIndex; i-- )

   142 			{

   143 				Remove( i );

   144 			}

   145 

   146 			//System.Diagnostics.Debug.WriteLine( "Merged: " + startingToken.Value );

   147 		}

   148 		#endregion

   149 

   150 		#region Data members

   151 		#endregion

   152 	}

   153 }