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.
*/
-public class PHPPairMatcher {
-
-
- public static final int LEFT= 1;
- public static final int RIGHT= 2;
-
-
+public class PHPPairMatcher implements ICharacterPairMatcher {
protected char[] fPairs;
+
protected IDocument fDocument;
+
protected int fOffset;
-
+
protected int fStartPos;
+
protected int fEndPos;
+
protected int fAnchor;
-
- protected PHPCodeReader fReader= new PHPCodeReader();
-
-
+
+ protected PHPCodeReader fReader = new PHPCodeReader();
+
public PHPPairMatcher(char[] pairs) {
- fPairs= pairs;
+ fPairs = pairs;
+ }
+
+ /*
+ * @see org.eclipse.jface.text.source.ICharacterPairMatcher#clear()
+ */
+ public void clear() {
+ if (fReader != null) {
+ try {
+ fReader.close();
+ } catch (IOException x) {
+ // ignore
+ }
+ }
}
-
+
public IRegion match(IDocument document, int offset) {
- fOffset= offset;
+ fOffset = offset;
if (fOffset < 0)
return null;
- fDocument= document;
+ fDocument = document;
if (matchPairsAt() && fStartPos != fEndPos)
return new Region(fStartPos, fEndPos - fStartPos + 1);
-
+
return null;
}
-
+
public int getAnchor() {
return fAnchor;
}
-
+
public void dispose() {
- fDocument= null;
+ fDocument = null;
if (fReader != null) {
try {
fReader.close();
} catch (IOException x) {
// ignore
}
- fReader= null;
+ fReader = null;
}
}
-
+
protected boolean matchPairsAt() {
int i;
- int pairIndex1= fPairs.length;
- int pairIndex2= fPairs.length;
+ int pairIndex1 = fPairs.length;
+ int pairIndex2 = fPairs.length;
- fStartPos= -1;
- fEndPos= -1;
+ fStartPos = -1;
+ fEndPos = -1;
// get the chars preceding and following the start position
try {
- char prevChar= fDocument.getChar(Math.max(fOffset - 1, 0));
- char nextChar= fDocument.getChar(fOffset);
+ char prevChar = fDocument.getChar(Math.max(fOffset - 1, 0));
+ char nextChar = fDocument.getChar(fOffset);
// search for opening peer character next to the activation point
- for (i= 0; i < fPairs.length; i= i + 2) {
+ for (i = 0; i < fPairs.length; i = i + 2) {
if (nextChar == fPairs[i]) {
- fStartPos= fOffset;
- pairIndex1= i;
+ fStartPos = fOffset;
+ pairIndex1 = i;
} else if (prevChar == fPairs[i]) {
- fStartPos= fOffset - 1;
- pairIndex1= 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) {
+ for (i = 1; i < fPairs.length; i = i + 2) {
if (prevChar == fPairs[i]) {
- fEndPos= fOffset - 1;
- pairIndex2= i;
+ fEndPos = fOffset - 1;
+ pairIndex2 = i;
} else if (nextChar == fPairs[i]) {
- fEndPos= fOffset;
- pairIndex2= i;
+ fEndPos = fOffset;
+ pairIndex2 = i;
}
}
if (fEndPos > -1) {
- fAnchor= RIGHT;
- fStartPos= searchForOpeningPeer(fEndPos, fPairs[pairIndex2 - 1], fPairs[pairIndex2], fDocument);
+ 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);
+ 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;
+ fStartPos = -1;
}
} catch (BadLocationException 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();
+
+ 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 != PHPCodeReader.EOF) {
if (c == openingPeer && c != closingPeer)
stack++;
else if (c == closingPeer)
stack--;
-
+
if (stack == 0)
return fReader.getOffset();
-
- c= fReader.read();
+
+ c = fReader.read();
}
-
- return -1;
+
+ return -1;
}
-
- protected int searchForOpeningPeer(int offset, int openingPeer, int closingPeer, IDocument document) throws IOException {
-
+
+ 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();
+
+ int stack = 1;
+ int c = fReader.read();
while (c != PHPCodeReader.EOF) {
if (c == closingPeer && c != openingPeer)
stack++;
else if (c == openingPeer)
stack--;
-
+
if (stack == 0)
return fReader.getOffset();
-
- c= fReader.read();
+
+ c = fReader.read();
}
-
+
return -1;
}
-}
+}
\ No newline at end of file
git://git.phpeclipse.com / phpeclipse.git / blobdiff