diff options
Diffstat (limited to 'bundles/org.eclipse.jst.jsp.ui/src/org/eclipse/jst/jsp/ui/internal/text/JavaPairMatcher.java')
| -rw-r--r-- | bundles/org.eclipse.jst.jsp.ui/src/org/eclipse/jst/jsp/ui/internal/text/JavaPairMatcher.java | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/bundles/org.eclipse.jst.jsp.ui/src/org/eclipse/jst/jsp/ui/internal/text/JavaPairMatcher.java b/bundles/org.eclipse.jst.jsp.ui/src/org/eclipse/jst/jsp/ui/internal/text/JavaPairMatcher.java deleted file mode 100644 index 0a55e93c26..0000000000 --- a/bundles/org.eclipse.jst.jsp.ui/src/org/eclipse/jst/jsp/ui/internal/text/JavaPairMatcher.java +++ /dev/null @@ -1,202 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2004 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 - *******************************************************************************/ -package org.eclipse.jst.jsp.ui.internal.text; - -import java.io.IOException; - -import org.eclipse.jface.text.BadLocationException; -import org.eclipse.jface.text.IDocument; -import org.eclipse.jface.text.IRegion; -import org.eclipse.jface.text.Region; -import org.eclipse.jface.text.source.ICharacterPairMatcher; - - -/** - * Helper class for match pairs of characters. - * - * Copied from org.eclipse.jdt.internal.ui.text so we don't have to - * depend on the org.eclipse.jdt.ui plugin. - * - * No modifications were made. - */ -class JavaPairMatcher implements ICharacterPairMatcher { - - protected char[] fPairs; - protected IDocument fDocument; - protected int fOffset; - - protected int fStartPos; - protected int fEndPos; - protected int fAnchor; - - protected JavaCodeReader fReader = new JavaCodeReader(); - - - public JavaPairMatcher(char[] pairs) { - fPairs = pairs; - } - - /* (non-Javadoc) - * @see org.eclipse.jface.text.source.ICharacterPairMatcher#match(org.eclipse.jface.text.IDocument, int) - */ - public IRegion match(IDocument document, int offset) { - - fOffset = offset; - - if (fOffset < 0) - return null; - - fDocument = document; - - if (fDocument != null && matchPairsAt() && fStartPos != fEndPos) - return new Region(fStartPos, fEndPos - fStartPos + 1); - - return null; - } - - /* (non-Javadoc) - * @see org.eclipse.jface.text.source.ICharacterPairMatcher#getAnchor() - */ - public int getAnchor() { - return fAnchor; - } - - /* (non-Javadoc) - * @see org.eclipse.jface.text.source.ICharacterPairMatcher#dispose() - */ - public void dispose() { - clear(); - fDocument = null; - fReader = null; - } - - /* - * @see org.eclipse.jface.text.source.ICharacterPairMatcher#clear() - */ - public void clear() { - if (fReader != null) { - try { - fReader.close(); - } - catch (IOException x) { - // ignore - } - } - } - - protected boolean matchPairsAt() { - - int i; - int pairIndex1 = fPairs.length; - int pairIndex2 = fPairs.length; - - fStartPos = -1; - fEndPos = -1; - - // get the chars preceding and following the start position - try { - - char prevChar = fDocument.getChar(Math.max(fOffset - 1, 0)); - // modified behavior for http://dev.eclipse.org/bugs/show_bug.cgi?id=16879 - // char nextChar= fDocument.getChar(fOffset); - - // search for opening peer character next to the activation point - for (i = 0; i < fPairs.length; i = i + 2) { - // if (nextChar == fPairs[i]) { - // fStartPos= fOffset; - // pairIndex1= i; - // } else - if (prevChar == fPairs[i]) { - fStartPos = fOffset - 1; - pairIndex1 = i; - } - } - - // search for closing peer character next to the activation point - for (i = 1; i < fPairs.length; i = i + 2) { - if (prevChar == fPairs[i]) { - fEndPos = fOffset - 1; - pairIndex2 = i; - } - // else if (nextChar == fPairs[i]) { - // fEndPos= fOffset; - // pairIndex2= i; - // } - } - - if (fEndPos > -1) { - fAnchor = RIGHT; - fStartPos = searchForOpeningPeer(fEndPos, fPairs[pairIndex2 - 1], fPairs[pairIndex2], fDocument); - if (fStartPos > -1) - return true; - else - fEndPos = -1; - } - else if (fStartPos > -1) { - fAnchor = LEFT; - fEndPos = searchForClosingPeer(fStartPos, fPairs[pairIndex1], fPairs[pairIndex1 + 1], fDocument); - if (fEndPos > -1) - return true; - else - fStartPos = -1; - } - - } - catch (BadLocationException x) { - } - catch (IOException x) { - } - - return false; - } - - protected int searchForClosingPeer(int offset, int openingPeer, int closingPeer, IDocument document) throws IOException { - - fReader.configureForwardReader(document, offset + 1, document.getLength(), true, true); - - int stack = 1; - int c = fReader.read(); - while (c != JavaCodeReader.EOF) { - if (c == openingPeer && c != closingPeer) - stack++; - else if (c == closingPeer) - stack--; - - if (stack == 0) - return fReader.getOffset(); - - c = fReader.read(); - } - - return -1; - } - - protected int searchForOpeningPeer(int offset, int openingPeer, int closingPeer, IDocument document) throws IOException { - - fReader.configureBackwardReader(document, offset, true, true); - - int stack = 1; - int c = fReader.read(); - while (c != JavaCodeReader.EOF) { - if (c == closingPeer && c != openingPeer) - stack++; - else if (c == openingPeer) - stack--; - - if (stack == 0) - return fReader.getOffset(); - - c = fReader.read(); - } - - return -1; - } -}
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