Skip to main content

This CGIT instance is deprecated, and repositories have been moved to Gitlab or Github. See the repository descriptions for specific locations.

summaryrefslogtreecommitdiffstats
path: root/bundles/org.eclipse.wst.html.ui/src/org/eclipse/wst/html/ui/internal/text/JavaPairMatcher.java
diff options
context:
space:
mode:
Diffstat (limited to 'bundles/org.eclipse.wst.html.ui/src/org/eclipse/wst/html/ui/internal/text/JavaPairMatcher.java')
-rw-r--r--bundles/org.eclipse.wst.html.ui/src/org/eclipse/wst/html/ui/internal/text/JavaPairMatcher.java277
1 files changed, 0 insertions, 277 deletions
diff --git a/bundles/org.eclipse.wst.html.ui/src/org/eclipse/wst/html/ui/internal/text/JavaPairMatcher.java b/bundles/org.eclipse.wst.html.ui/src/org/eclipse/wst/html/ui/internal/text/JavaPairMatcher.java
deleted file mode 100644
index 020769fb6b..0000000000
--- a/bundles/org.eclipse.wst.html.ui/src/org/eclipse/wst/html/ui/internal/text/JavaPairMatcher.java
+++ /dev/null
@@ -1,277 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2001, 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
- *
- *******************************************************************************/
-package org.eclipse.wst.html.ui.internal.text;
-
-// taken from package org.eclipse.jdt.ui.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;
-
-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();
- /**
- * Stores the source version state.
- *
- * @see Eclipse 3.1
- */
- private boolean fHighlightAngularBrackets = false;
-
-
- 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(offset < 0 || offset >= document.getLength())
- 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 {
- if (openingPeer == '<' && !(fHighlightAngularBrackets && isTypeParameterBracket(offset, document)))
- return -1;
-
- 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 {
- if (openingPeer == '<' && !fHighlightAngularBrackets)
- return -1;
-
- 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) {
- if (closingPeer == '>' && !isTypeParameterBracket(fReader.getOffset(), document))
- return -1;
- return fReader.getOffset();
- }
-
- c = fReader.read();
- }
-
- return -1;
- }
-
- /**
- * Checks if the angular bracket at <code>offset</code> is a type
- * parameter bracket.
- *
- * @param offset
- * the offset of the opening bracket
- * @param document
- * the document
- * @return <code>true</code> if the bracket is part of a type parameter,
- * <code>false</code> otherwise
- * @see Eclipse 3.1
- */
- private boolean isTypeParameterBracket(int offset, IDocument document) {
- /*
- * type parameter come after braces (closing or opening), semicolons,
- * or after a Type name (heuristic: starts with capital character, or
- * after a modifier keyword in a method declaration (visibility,
- * static, synchronized, final)
- */
-
- try {
- IRegion line = document.getLineInformationOfOffset(offset);
-
- JavaHeuristicScanner scanner = new JavaHeuristicScanner(document);
- int prevToken = scanner.previousToken(offset - 1, line.getOffset());
- int prevTokenOffset = scanner.getPosition() + 1;
- String previous = prevToken == Symbols.TokenEOF ? null : document.get(prevTokenOffset, offset - prevTokenOffset).trim();
-
- if (prevToken == Symbols.TokenLBRACE || prevToken == Symbols.TokenRBRACE || prevToken == Symbols.TokenSEMICOLON || prevToken == Symbols.TokenSYNCHRONIZED || prevToken == Symbols.TokenSTATIC || (prevToken == Symbols.TokenIDENT && isTypeParameterIntroducer(previous)) || prevToken == Symbols.TokenEOF)
- return true;
- }
- catch (BadLocationException e) {
- return false;
- }
-
- return false;
- }
-
- /**
- * Returns <code>true</code> if <code>identifier</code> is an
- * identifier that could come right before a type parameter list. It uses
- * a heuristic: if the identifier starts with an upper case, it is assumed
- * a type name. Also, if <code>identifier</code> is a method modifier,
- * it is assumed that the angular bracket is part of the generic type
- * parameter of a method.
- *
- * @param identifier
- * the identifier to check
- * @return <code>true</code> if the identifier could introduce a type
- * parameter list
- * @see Eclipse 3.1
- */
- private boolean isTypeParameterIntroducer(String identifier) {
- return identifier.length() > 0 && (Character.isUpperCase(identifier.charAt(0)) || identifier.startsWith("final") //$NON-NLS-1$
- || identifier.startsWith("public") //$NON-NLS-1$
- || identifier.startsWith("public") //$NON-NLS-1$
- || identifier.startsWith("protected") //$NON-NLS-1$
- || identifier.startsWith("private")); //$NON-NLS-1$
- }
-}

Back to the top