Mercurial > projects > dwt2
diff org.eclipse.text/src/org/eclipse/jface/text/ListLineTracker.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
---|---|
date | Sat, 14 Mar 2009 18:23:29 +0100 |
parents | |
children | 5feec68b4556 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/org.eclipse.text/src/org/eclipse/jface/text/ListLineTracker.d Sat Mar 14 18:23:29 2009 +0100 @@ -0,0 +1,507 @@ +/******************************************************************************* + * 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.ListLineTracker; + +import org.eclipse.jface.text.IDocumentPartitioningListener; // packageimport +import org.eclipse.jface.text.DefaultTextHover; // packageimport +import org.eclipse.jface.text.AbstractInformationControl; // packageimport +import org.eclipse.jface.text.TextUtilities; // packageimport +import org.eclipse.jface.text.IInformationControlCreatorExtension; // packageimport +import org.eclipse.jface.text.AbstractInformationControlManager; // packageimport +import org.eclipse.jface.text.ITextViewerExtension2; // packageimport +import org.eclipse.jface.text.IDocumentPartitioner; // packageimport +import org.eclipse.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport +import org.eclipse.jface.text.ITextSelection; // packageimport +import org.eclipse.jface.text.Document; // packageimport +import org.eclipse.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport +import org.eclipse.jface.text.ITextListener; // packageimport +import org.eclipse.jface.text.BadPartitioningException; // packageimport +import org.eclipse.jface.text.ITextViewerExtension5; // packageimport +import org.eclipse.jface.text.IDocumentPartitionerExtension3; // packageimport +import org.eclipse.jface.text.IUndoManager; // packageimport +import org.eclipse.jface.text.ITextHoverExtension2; // packageimport +import org.eclipse.jface.text.IRepairableDocument; // packageimport +import org.eclipse.jface.text.IRewriteTarget; // packageimport +import org.eclipse.jface.text.DefaultPositionUpdater; // packageimport +import org.eclipse.jface.text.RewriteSessionEditProcessor; // packageimport +import org.eclipse.jface.text.TextViewerHoverManager; // packageimport +import org.eclipse.jface.text.DocumentRewriteSession; // packageimport +import org.eclipse.jface.text.TextViewer; // packageimport +import org.eclipse.jface.text.ITextViewerExtension8; // packageimport +import org.eclipse.jface.text.RegExMessages; // packageimport +import org.eclipse.jface.text.IDelayedInputChangeProvider; // packageimport +import org.eclipse.jface.text.ITextOperationTargetExtension; // packageimport +import org.eclipse.jface.text.IWidgetTokenOwner; // packageimport +import org.eclipse.jface.text.IViewportListener; // packageimport +import org.eclipse.jface.text.GapTextStore; // packageimport +import org.eclipse.jface.text.MarkSelection; // packageimport +import org.eclipse.jface.text.IDocumentPartitioningListenerExtension; // packageimport +import org.eclipse.jface.text.IDocumentAdapterExtension; // packageimport +import org.eclipse.jface.text.IInformationControlExtension; // packageimport +import org.eclipse.jface.text.IDocumentPartitioningListenerExtension2; // packageimport +import org.eclipse.jface.text.DefaultDocumentAdapter; // packageimport +import org.eclipse.jface.text.ITextViewerExtension3; // packageimport +import org.eclipse.jface.text.IInformationControlCreator; // packageimport +import org.eclipse.jface.text.TypedRegion; // packageimport +import org.eclipse.jface.text.ISynchronizable; // packageimport +import org.eclipse.jface.text.IMarkRegionTarget; // packageimport +import org.eclipse.jface.text.TextViewerUndoManager; // packageimport +import org.eclipse.jface.text.IRegion; // packageimport +import org.eclipse.jface.text.IInformationControlExtension2; // packageimport +import org.eclipse.jface.text.IDocumentExtension4; // packageimport +import org.eclipse.jface.text.IDocumentExtension2; // packageimport +import org.eclipse.jface.text.IDocumentPartitionerExtension2; // packageimport +import org.eclipse.jface.text.Assert; // packageimport +import org.eclipse.jface.text.DefaultInformationControl; // packageimport +import org.eclipse.jface.text.IWidgetTokenOwnerExtension; // packageimport +import org.eclipse.jface.text.DocumentClone; // packageimport +import org.eclipse.jface.text.DefaultUndoManager; // packageimport +import org.eclipse.jface.text.IFindReplaceTarget; // packageimport +import org.eclipse.jface.text.IAutoEditStrategy; // packageimport +import org.eclipse.jface.text.ILineTrackerExtension; // packageimport +import org.eclipse.jface.text.IUndoManagerExtension; // packageimport +import org.eclipse.jface.text.TextSelection; // packageimport +import org.eclipse.jface.text.DefaultAutoIndentStrategy; // packageimport +import org.eclipse.jface.text.IAutoIndentStrategy; // packageimport +import org.eclipse.jface.text.IPainter; // packageimport +import org.eclipse.jface.text.IInformationControl; // packageimport +import org.eclipse.jface.text.IInformationControlExtension3; // packageimport +import org.eclipse.jface.text.ITextViewerExtension6; // packageimport +import org.eclipse.jface.text.IInformationControlExtension4; // packageimport +import org.eclipse.jface.text.DefaultLineTracker; // packageimport +import org.eclipse.jface.text.IDocumentInformationMappingExtension; // packageimport +import org.eclipse.jface.text.IRepairableDocumentExtension; // packageimport +import org.eclipse.jface.text.ITextHover; // packageimport +import org.eclipse.jface.text.FindReplaceDocumentAdapter; // packageimport +import org.eclipse.jface.text.ILineTracker; // packageimport +import org.eclipse.jface.text.Line; // packageimport +import org.eclipse.jface.text.ITextViewerExtension; // packageimport +import org.eclipse.jface.text.IDocumentAdapter; // packageimport +import org.eclipse.jface.text.TextEvent; // packageimport +import org.eclipse.jface.text.BadLocationException; // packageimport +import org.eclipse.jface.text.AbstractDocument; // packageimport +import org.eclipse.jface.text.AbstractLineTracker; // packageimport +import org.eclipse.jface.text.TreeLineTracker; // packageimport +import org.eclipse.jface.text.ITextPresentationListener; // packageimport +import org.eclipse.jface.text.Region; // packageimport +import org.eclipse.jface.text.ITextViewer; // packageimport +import org.eclipse.jface.text.IDocumentInformationMapping; // packageimport +import org.eclipse.jface.text.MarginPainter; // packageimport +import org.eclipse.jface.text.IPaintPositionManager; // packageimport +import org.eclipse.jface.text.TextPresentation; // packageimport +import org.eclipse.jface.text.IFindReplaceTargetExtension; // packageimport +import org.eclipse.jface.text.ISlaveDocumentManagerExtension; // packageimport +import org.eclipse.jface.text.ISelectionValidator; // packageimport +import org.eclipse.jface.text.IDocumentExtension; // packageimport +import org.eclipse.jface.text.PropagatingFontFieldEditor; // packageimport +import org.eclipse.jface.text.ConfigurableLineTracker; // packageimport +import org.eclipse.jface.text.SlaveDocumentEvent; // packageimport +import org.eclipse.jface.text.IDocumentListener; // packageimport +import org.eclipse.jface.text.PaintManager; // packageimport +import org.eclipse.jface.text.IFindReplaceTargetExtension3; // packageimport +import org.eclipse.jface.text.ITextDoubleClickStrategy; // packageimport +import org.eclipse.jface.text.IDocumentExtension3; // packageimport +import org.eclipse.jface.text.Position; // packageimport +import org.eclipse.jface.text.TextMessages; // packageimport +import org.eclipse.jface.text.CopyOnWriteTextStore; // packageimport +import org.eclipse.jface.text.WhitespaceCharacterPainter; // packageimport +import org.eclipse.jface.text.IPositionUpdater; // packageimport +import org.eclipse.jface.text.DefaultTextDoubleClickStrategy; // packageimport +import org.eclipse.jface.text.ITextInputListener; // packageimport +import org.eclipse.jface.text.BadPositionCategoryException; // packageimport +import org.eclipse.jface.text.IWidgetTokenKeeperExtension; // packageimport +import org.eclipse.jface.text.IInputChangedListener; // packageimport +import org.eclipse.jface.text.ITextOperationTarget; // packageimport +import org.eclipse.jface.text.IDocumentInformationMappingExtension2; // packageimport +import org.eclipse.jface.text.ITextViewerExtension7; // packageimport +import org.eclipse.jface.text.IInformationControlExtension5; // packageimport +import org.eclipse.jface.text.IDocumentRewriteSessionListener; // packageimport +import org.eclipse.jface.text.JFaceTextUtil; // packageimport +import org.eclipse.jface.text.AbstractReusableInformationControlCreator; // packageimport +import org.eclipse.jface.text.TabsToSpacesConverter; // packageimport +import org.eclipse.jface.text.CursorLinePainter; // packageimport +import org.eclipse.jface.text.ITextHoverExtension; // packageimport +import org.eclipse.jface.text.IEventConsumer; // packageimport +import org.eclipse.jface.text.IDocument; // packageimport +import org.eclipse.jface.text.IWidgetTokenKeeper; // packageimport +import org.eclipse.jface.text.DocumentCommand; // packageimport +import org.eclipse.jface.text.TypedPosition; // packageimport +import org.eclipse.jface.text.IEditingSupportRegistry; // packageimport +import org.eclipse.jface.text.IDocumentPartitionerExtension; // packageimport +import org.eclipse.jface.text.AbstractHoverInformationControlManager; // packageimport +import org.eclipse.jface.text.IEditingSupport; // packageimport +import org.eclipse.jface.text.IMarkSelection; // packageimport +import org.eclipse.jface.text.ISlaveDocumentManager; // packageimport +import org.eclipse.jface.text.DocumentEvent; // packageimport +import org.eclipse.jface.text.DocumentPartitioningChangedEvent; // packageimport +import org.eclipse.jface.text.ITextStore; // packageimport +import org.eclipse.jface.text.JFaceTextMessages; // packageimport +import org.eclipse.jface.text.DocumentRewriteSessionEvent; // packageimport +import org.eclipse.jface.text.SequentialRewriteTextStore; // packageimport +import org.eclipse.jface.text.DocumentRewriteSessionType; // packageimport +import org.eclipse.jface.text.TextAttribute; // packageimport +import org.eclipse.jface.text.ITextViewerExtension4; // packageimport +import org.eclipse.jface.text.ITypedRegion; // packageimport + +import java.lang.all; +import java.util.List; +import java.util.ArrayList; +import java.util.Set; + +import org.eclipse.jface.text.AbstractLineTracker; + +/** + * Abstract, read-only implementation of <code>ILineTracker</code>. It lets the definition of + * line delimiters to subclasses. Assuming that '\n' is the only line delimiter, this abstract + * implementation defines the following line scheme: + * <ul> + * <li> "" -> [0,0] + * <li> "a" -> [0,1] + * <li> "\n" -> [0,1], [1,0] + * <li> "a\n" -> [0,2], [2,0] + * <li> "a\nb" -> [0,2], [2,1] + * <li> "a\nbc\n" -> [0,2], [2,3], [5,0] + * </ul> + * This class must be subclassed. + * + * @since 3.2 + */ +abstract class ListLineTracker : ILineTracker { + + /** The line information */ + private const List fLines; + /** The length of the tracked text */ + private int fTextLength; + + /** + * Creates a new line tracker. + */ + protected this() { + fLines= new ArrayList(); + } + + /** + * Binary search for the line at a given offset. + * + * @param offset the offset whose line should be found + * @return the line of the offset + */ + private int findLine(int offset) { + + if (fLines.size() is 0) + return -1; + + int left= 0; + int right= fLines.size() - 1; + int mid= 0; + Line line= null; + + while (left < right) { + + mid= (left + right) / 2; + + line= cast(Line) fLines.get(mid); + if (offset < line.offset) { + if (left is mid) + right= left; + else + right= mid - 1; + } else if (offset > line.offset) { + if (right is mid) + left= right; + else + left= mid + 1; + } else if (offset is line.offset) { + left= right= mid; + } + } + + line= cast(Line) fLines.get(left); + if (line.offset > offset) + --left; + return left; + } + + /** + * Returns the number of lines covered by the specified text range. + * + * @param startLine the line where the text range starts + * @param offset the start offset of the text range + * @param length the length of the text range + * @return the number of lines covered by this text range + * @exception BadLocationException if range is undefined in this tracker + */ + private int getNumberOfLines(int startLine, int offset, int length) { + + if (length is 0) + return 1; + + int target= offset + length; + + Line l= cast(Line) fLines.get(startLine); + + if (l.delimiter is null) + return 1; + + if (l.offset + l.length > target) + return 1; + + if (l.offset + l.length is target) + return 2; + + return getLineNumberOfOffset(target) - startLine + 1; + } + + /* + * @see org.eclipse.jface.text.ILineTracker#getLineLength(int) + */ + public final int getLineLength(int line) { + int lines= fLines.size(); + + if (line < 0 || line > lines) + throw new BadLocationException(); + + if (lines is 0 || lines is line) + return 0; + + Line l= cast(Line) fLines.get(line); + return l.length; + } + + /* + * @see org.eclipse.jface.text.ILineTracker#getLineNumberOfOffset(int) + */ + public final int getLineNumberOfOffset(int position) { + if (position < 0 || position > fTextLength) + throw new BadLocationException(); + + if (position is fTextLength) { + + int lastLine= fLines.size() - 1; + if (lastLine < 0) + return 0; + + Line l= cast(Line) fLines.get(lastLine); + return (l.delimiter !is null ? lastLine + 1 : lastLine); + } + + return findLine(position); + } + + /* + * @see org.eclipse.jface.text.ILineTracker#getLineInformationOfOffset(int) + */ + public final IRegion getLineInformationOfOffset(int position) { + if (position > fTextLength) + throw new BadLocationException(); + + if (position is fTextLength) { + int size= fLines.size(); + if (size is 0) + return new Region(0, 0); + Line l= cast(Line) fLines.get(size - 1); + return (l.delimiter !is null ? new Line(fTextLength, 0) : new Line(fTextLength - l.length, l.length)); + } + + return getLineInformation(findLine(position)); + } + + /* + * @see org.eclipse.jface.text.ILineTracker#getLineInformation(int) + */ + public final IRegion getLineInformation(int line) { + int lines= fLines.size(); + + if (line < 0 || line > lines) + throw new BadLocationException(); + + if (lines is 0) + return new Line(0, 0); + + if (line is lines) { + Line l= cast(Line) fLines.get(line - 1); + return new Line(l.offset + l.length, 0); + } + + Line l= cast(Line) fLines.get(line); + return (l.delimiter !is null ? new Line(l.offset, l.length - l.delimiter.length()) : l); + } + + /* + * @see org.eclipse.jface.text.ILineTracker#getLineOffset(int) + */ + public final int getLineOffset(int line) { + int lines= fLines.size(); + + if (line < 0 || line > lines) + throw new BadLocationException(); + + if (lines is 0) + return 0; + + if (line is lines) { + Line l= cast(Line) fLines.get(line - 1); + if (l.delimiter !is null) + return l.offset + l.length; + throw new BadLocationException(); + } + + Line l= cast(Line) fLines.get(line); + return l.offset; + } + + /* + * @see org.eclipse.jface.text.ILineTracker#getNumberOfLines() + */ + public final int getNumberOfLines() { + int lines= fLines.size(); + + if (lines is 0) + return 1; + + Line l= cast(Line) fLines.get(lines - 1); + return (l.delimiter !is null ? lines + 1 : lines); + } + + /* + * @see org.eclipse.jface.text.ILineTracker#getNumberOfLines(int, int) + */ + public final int getNumberOfLines(int position, int length) { + + if (position < 0 || position + length > fTextLength) + throw new BadLocationException(); + + if (length is 0) // optimization + return 1; + + return getNumberOfLines(getLineNumberOfOffset(position), position, length); + } + + /* + * @see org.eclipse.jface.text.ILineTracker#computeNumberOfLines(java.lang.String) + */ + public final int computeNumberOfLines(String text) { + int count= 0; + int start= 0; + AbstractLineTracker_DelimiterInfo delimiterInfo= nextDelimiterInfo(text, start); + while (delimiterInfo !is null && delimiterInfo.delimiterIndex > -1) { + ++count; + start= delimiterInfo.delimiterIndex + delimiterInfo.delimiterLength; + delimiterInfo= nextDelimiterInfo(text, start); + } + return count; + } + + /* + * @see org.eclipse.jface.text.ILineTracker#getLineDelimiter(int) + */ + public final String getLineDelimiter(int line) { + int lines= fLines.size(); + + if (line < 0 || line > lines) + throw new BadLocationException(); + + if (lines is 0) + return null; + + if (line is lines) + return null; + + Line l= cast(Line) fLines.get(line); + return l.delimiter; + } + + /** + * Returns the information about the first delimiter found in the given text starting at the + * given offset. + * + * @param text the text to be searched + * @param offset the offset in the given text + * @return the information of the first found delimiter or <code>null</code> + */ + protected abstract AbstractLineTracker_DelimiterInfo nextDelimiterInfo(String text, int offset); + + /** + * Creates the line structure for the given text. Newly created lines are inserted into the line + * structure starting at the given position. Returns the number of newly created lines. + * + * @param text the text for which to create a line structure + * @param insertPosition the position at which the newly created lines are inserted into the + * tracker's line structure + * @param offset the offset of all newly created lines + * @return the number of newly created lines + */ + private int createLines(String text, int insertPosition, int offset) { + + int count= 0; + int start= 0; + AbstractLineTracker_DelimiterInfo delimiterInfo= nextDelimiterInfo(text, 0); + + while (delimiterInfo !is null && delimiterInfo.delimiterIndex > -1) { + + int index= delimiterInfo.delimiterIndex + (delimiterInfo.delimiterLength - 1); + + if (insertPosition + count >= fLines.size()) + fLines.add(new Line(offset + start, offset + index, delimiterInfo.delimiter)); + else + fLines.add(insertPosition + count, new Line(offset + start, offset + index, delimiterInfo.delimiter)); + + ++count; + start= index + 1; + delimiterInfo= nextDelimiterInfo(text, start); + } + + if (start < text.length()) { + if (insertPosition + count < fLines.size()) { + // there is a line below the current + Line l= cast(Line) fLines.get(insertPosition + count); + int delta= text.length() - start; + l.offset-= delta; + l.length+= delta; + } else { + fLines.add(new Line(offset + start, offset + text.length() - 1, null)); + ++count; + } + } + + return count; + } + + /* + * @see org.eclipse.jface.text.ILineTracker#replace(int, int, java.lang.String) + */ + public final void replace(int position, int length, String text) { + throw new UnsupportedOperationException(); + } + + /* + * @see org.eclipse.jface.text.ILineTracker#set(java.lang.String) + */ + public final void set(String text) { + fLines.clear(); + if (text !is null) { + fTextLength= text.length(); + createLines(text, 0, 0); + } + } + + /** + * Returns the internal data structure, a {@link List} of {@link Line}s. Used only by + * {@link TreeLineTracker#TreeLineTracker(ListLineTracker)}. + * + * @return the internal list of lines. + */ + final List getLines() { + return fLines; + } +}