Mercurial > projects > dwt2
view org.eclipse.text/src/org/eclipse/jface/text/SequentialRewriteTextStore.d @ 14:5feec68b4556
First run of automatic package imports
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 14 Mar 2009 18:41:58 +0100 |
parents | bc29606a740c |
children | c4b1a29263fc |
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/******************************************************************************* * Copyright (c) 2000, 2006 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module org.eclipse.jface.text.SequentialRewriteTextStore; import org.eclipse.jface.text.IRepairableDocument; import org.eclipse.jface.text.AbstractDocument; import org.eclipse.jface.text.IDocumentPartitionerExtension3; import org.eclipse.jface.text.ConfigurableLineTracker; import org.eclipse.jface.text.IRegion; import org.eclipse.jface.text.TypedRegion; import org.eclipse.jface.text.IDocumentExtension2; import org.eclipse.jface.text.TypedPosition; import org.eclipse.jface.text.RewriteSessionEditProcessor; import org.eclipse.jface.text.SlaveDocumentEvent; import org.eclipse.jface.text.IDocumentExtension3; import org.eclipse.jface.text.IDocumentListener; import org.eclipse.jface.text.ISynchronizable; import org.eclipse.jface.text.DocumentEvent; import org.eclipse.jface.text.Position; import org.eclipse.jface.text.IRepairableDocumentExtension; import org.eclipse.jface.text.DocumentRewriteSessionType; import org.eclipse.jface.text.Region; import org.eclipse.jface.text.IDocumentExtension4; import org.eclipse.jface.text.BadLocationException; import org.eclipse.jface.text.TextMessages; import org.eclipse.jface.text.IDocumentPartitioningListenerExtension2; import org.eclipse.jface.text.IDocumentInformationMappingExtension; import org.eclipse.jface.text.IDocumentPartitioningListenerExtension; import org.eclipse.jface.text.ITextStore; import org.eclipse.jface.text.IDocumentPartitionerExtension; import org.eclipse.jface.text.DocumentRewriteSession; import org.eclipse.jface.text.IPositionUpdater; import org.eclipse.jface.text.ISlaveDocumentManagerExtension; import org.eclipse.jface.text.ILineTracker; import org.eclipse.jface.text.ListLineTracker; import org.eclipse.jface.text.IDocumentInformationMapping; import org.eclipse.jface.text.IDocumentRewriteSessionListener; import org.eclipse.jface.text.Assert; import org.eclipse.jface.text.AbstractLineTracker; import org.eclipse.jface.text.DefaultLineTracker; import org.eclipse.jface.text.BadPositionCategoryException; import org.eclipse.jface.text.BadPartitioningException; import org.eclipse.jface.text.IDocumentInformationMappingExtension2; import org.eclipse.jface.text.DocumentPartitioningChangedEvent; import org.eclipse.jface.text.FindReplaceDocumentAdapter; import org.eclipse.jface.text.TextUtilities; import org.eclipse.jface.text.ISlaveDocumentManager; import org.eclipse.jface.text.IDocument; import org.eclipse.jface.text.ILineTrackerExtension; import org.eclipse.jface.text.IDocumentPartitioner; import org.eclipse.jface.text.GapTextStore; import org.eclipse.jface.text.Document; import org.eclipse.jface.text.IDocumentExtension; import org.eclipse.jface.text.IDocumentPartitioningListener; import org.eclipse.jface.text.CopyOnWriteTextStore; import org.eclipse.jface.text.DefaultPositionUpdater; import org.eclipse.jface.text.Line; import org.eclipse.jface.text.DocumentRewriteSessionEvent; import org.eclipse.jface.text.IDocumentPartitionerExtension2; import org.eclipse.jface.text.ITypedRegion; import org.eclipse.jface.text.TreeLineTracker; import java.lang.all; import java.util.LinkedList; import java.util.Iterator; import java.util.Set; /** * A text store that optimizes a given source text store for sequential rewriting. * While rewritten it keeps a list of replace command that serve as patches for * the source store. Only on request, the source store is indeed manipulated * by applying the patch commands to the source text store. * * @since 2.0 * @deprecated since 3.3 as {@link GapTextStore} performs better even for sequential rewrite scenarios */ public class SequentialRewriteTextStore : ITextStore { /** * A buffered replace command. */ private static class Replace { public int newOffset; public const int offset; public const int length; public const String text; public this(int offset, int newOffset, int length, String text) { this.newOffset= newOffset; this.offset= offset; this.length= length; this.text= text; } } /** The list of buffered replacements. */ private LinkedList fReplaceList; /** The source text store */ private ITextStore fSource; /** A flag to enforce sequential access. */ private static const bool ASSERT_SEQUENTIALITY= false; /** * Creates a new sequential rewrite store for the given source store. * * @param source the source text store */ public this(ITextStore source) { fReplaceList= new LinkedList(); fSource= source; } /** * Returns the source store of this rewrite store. * * @return the source store of this rewrite store */ public ITextStore getSourceStore() { commit(); return fSource; } /* * @see org.eclipse.jface.text.ITextStore#replace(int, int, java.lang.String) */ public void replace(int offset, int length, String text) { if (text is null) text= ""; //$NON-NLS-1$ if (fReplaceList.size() is 0) { fReplaceList.add(new Replace(offset, offset, length, text)); } else { Replace firstReplace= cast(Replace) fReplaceList.getFirst(); Replace lastReplace= cast(Replace) fReplaceList.getLast(); // backward if (offset + length <= firstReplace.newOffset) { int delta= text.length - length; if (delta !is 0) { for (Iterator i= fReplaceList.iterator(); i.hasNext(); ) { Replace replace= cast(Replace) i.next(); replace.newOffset += delta; } } fReplaceList.addFirst(new Replace(offset, offset, length, text)); // forward } else if (offset >= lastReplace.newOffset + lastReplace.text.length) { int delta= getDelta(lastReplace); fReplaceList.add(new Replace(offset - delta, offset, length, text)); } else if (ASSERT_SEQUENTIALITY) { throw new IllegalArgumentException(null); } else { commit(); fSource.replace(offset, length, text); } } } /* * @see org.eclipse.jface.text.ITextStore#set(java.lang.String) */ public void set(String text) { fSource.set(text); fReplaceList.clear(); } /* * @see org.eclipse.jface.text.ITextStore#get(int, int) */ public String get(int offset, int length) { if (fReplaceList.isEmpty()) return fSource.get(offset, length); Replace firstReplace= cast(Replace) fReplaceList.getFirst(); Replace lastReplace= cast(Replace) fReplaceList.getLast(); // before if (offset + length <= firstReplace.newOffset) { return fSource.get(offset, length); // after } else if (offset >= lastReplace.newOffset + lastReplace.text.length) { int delta= getDelta(lastReplace); return fSource.get(offset - delta, length); } else if (ASSERT_SEQUENTIALITY) { throw new IllegalArgumentException(null); } else { int delta= 0; for (Iterator i= fReplaceList.iterator(); i.hasNext(); ) { Replace replace= cast(Replace) i.next(); if (offset + length < replace.newOffset) { return fSource.get(offset - delta, length); } else if (offset >= replace.newOffset && offset + length <= replace.newOffset + replace.text.length) { return replace.text.substring(offset - replace.newOffset, offset - replace.newOffset + length); } else if (offset >= replace.newOffset + replace.text.length) { delta= getDelta(replace); continue; } else { commit(); return fSource.get(offset, length); } } return fSource.get(offset - delta, length); } } /** * Returns the difference between the offset in the source store and the "same" offset in the * rewrite store after the replace operation. * * @param replace the replace command * @return the difference */ private static final int getDelta(Replace replace) { return replace.newOffset - replace.offset + replace.text.length() - replace.length; } /* * @see org.eclipse.jface.text.ITextStore#get(int) */ public char get(int offset) { if (fReplaceList.isEmpty()) return fSource.get(offset); Replace firstReplace= cast(Replace) fReplaceList.getFirst(); Replace lastReplace= cast(Replace) fReplaceList.getLast(); // before if (offset < firstReplace.newOffset) { return fSource.get(offset); // after } else if (offset >= lastReplace.newOffset + lastReplace.text.length()) { int delta= getDelta(lastReplace); return fSource.get(offset - delta); } else if (ASSERT_SEQUENTIALITY) { throw new IllegalArgumentException(null); } else { int delta= 0; for (Iterator i= fReplaceList.iterator(); i.hasNext(); ) { Replace replace= cast(Replace) i.next(); if (offset < replace.newOffset) return fSource.get(offset - delta); else if (offset < replace.newOffset + replace.text.length()) return replace.text.charAt(offset - replace.newOffset); delta= getDelta(replace); } return fSource.get(offset - delta); } } /* * @see org.eclipse.jface.text.ITextStore#getLength() */ public int getLength() { if (fReplaceList.isEmpty()) return fSource.getLength(); Replace lastReplace= cast(Replace) fReplaceList.getLast(); return fSource.getLength() + getDelta(lastReplace); } /** * Disposes this rewrite store. */ public void dispose() { fReplaceList= null; fSource= null; } /** * Commits all buffered replace commands. */ private void commit() { if (fReplaceList.isEmpty()) return; StringBuffer buffer= new StringBuffer(); int delta= 0; for (Iterator i= fReplaceList.iterator(); i.hasNext(); ) { Replace replace= cast(Replace) i.next(); int offset= buffer.length() - delta; buffer.append(fSource.get(offset, replace.offset - offset)); buffer.append(replace.text); delta= getDelta(replace); } int offset= buffer.length() - delta; buffer.append(fSource.get(offset, fSource.getLength() - offset)); fSource.set(buffer.toString()); fReplaceList.clear(); } }