Mercurial > projects > dwt-addons
view dwtx/jface/text/projection/ProjectionTextStore.d @ 134:51e6e63f930e
Regex fix for casts
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 24 Aug 2008 01:46:20 +0200 |
parents | 7d818bd32d63 |
children | 1a5b8f8129df |
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/******************************************************************************* * Copyright (c) 2000, 2005 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 dwtx.jface.text.projection.ProjectionTextStore; import dwtx.jface.text.projection.ProjectionMapping; // packageimport import dwtx.jface.text.projection.ChildDocumentManager; // packageimport import dwtx.jface.text.projection.SegmentUpdater; // packageimport import dwtx.jface.text.projection.Segment; // packageimport import dwtx.jface.text.projection.ProjectionDocument; // packageimport import dwtx.jface.text.projection.FragmentUpdater; // packageimport import dwtx.jface.text.projection.ProjectionDocumentEvent; // packageimport import dwtx.jface.text.projection.ChildDocument; // packageimport import dwtx.jface.text.projection.IMinimalMapping; // packageimport import dwtx.jface.text.projection.Fragment; // packageimport import dwtx.jface.text.projection.ProjectionDocumentManager; // packageimport import dwt.dwthelper.utils; import dwtx.jface.text.BadLocationException; import dwtx.jface.text.IDocument; import dwtx.jface.text.IRegion; import dwtx.jface.text.ITextStore; import dwtx.jface.text.Region; /** * A text store representing the projection defined by the given document * information mapping. * * @since 3.0 */ class ProjectionTextStore : ITextStore { /** * Implementation of {@link IRegion} that can be reused * by setting the offset and the length. */ private static class ReusableRegion : IRegion { private int fOffset; private int fLength; /* * @see dwtx.jface.text.IRegion#getLength() */ public int getLength() { return fLength; } /* * @see dwtx.jface.text.IRegion#getOffset() */ public int getOffset() { return fOffset; } /** * Updates this region. * * @param offset the new offset * @param length the new length */ public void update(int offset, int length) { fOffset= offset; fLength= length; } } /** The master document */ private IDocument fMasterDocument; /** The document information mapping */ private IMinimalMapping fMapping; /** Internal region used for querying the mapping. */ private ReusableRegion fReusableRegion= new ReusableRegion(); /** * Creates a new projection text store for the given master document and * the given document information mapping. * * @param masterDocument the master document * @param mapping the document information mapping */ public this(IDocument masterDocument, IMinimalMapping mapping) { fMasterDocument= masterDocument; fMapping= mapping; } private void internalError() { throw new IllegalStateException(); } /* * @see dwtx.jface.text.ITextStore#set(java.lang.String) */ public void set(String contents) { IRegion masterRegion= fMapping.getCoverage(); if (masterRegion is null) internalError(); try { fMasterDocument.replace(masterRegion.getOffset(), masterRegion.getLength(), contents); } catch (BadLocationException e) { internalError(); } } /* * @see dwtx.jface.text.ITextStore#replace(int, int, java.lang.String) */ public void replace(int offset, int length, String text) { fReusableRegion.update(offset, length); try { IRegion masterRegion= fMapping.toOriginRegion(fReusableRegion); fMasterDocument.replace(masterRegion.getOffset(), masterRegion.getLength(), text); } catch (BadLocationException e) { internalError(); } } /* * @see dwtx.jface.text.ITextStore#getLength() */ public int getLength() { return fMapping.getImageLength(); } /* * @see dwtx.jface.text.ITextStore#get(int) */ public char get(int offset) { try { int originOffset= fMapping.toOriginOffset(offset); return fMasterDocument.getChar(originOffset); } catch (BadLocationException e) { internalError(); } // unreachable return cast(wchar) 0; } /* * @see ITextStore#get(int, int) */ public String get(int offset, int length) { try { IRegion[] fragments= fMapping.toExactOriginRegions(new Region(offset, length)); StringBuffer buffer= new StringBuffer(); for (int i= 0; i < fragments.length; i++) { IRegion fragment= fragments[i]; buffer.append(fMasterDocument.get(fragment.getOffset(), fragment.getLength())); } return buffer.toString(); } catch (BadLocationException e) { internalError(); } // unreachable return null; } }