Examples with StructuredDocumentEvent org.eclipse.wst.sse.core.internal.provisional.events.StructuredDocumentEvent used on opensource projects

Example 11 with StructuredDocumentEvent

use of org.eclipse.wst.sse.core.internal.provisional.events.StructuredDocumentEvent in project webtools.sourceediting by eclipse.

the class StructuredDocumentReParser method checkForQuotes.

/*
	 * For simplicity, if either text to be deleted, or text to be inserted
	 * contains at least one quote, we'll search for previous quote in
	 * document, if any, and use that document region as a dirty start, and we'll use
	 * end of document as dirty end. We need to assume either \" or \' is an
	 * acceptable quote. (NOTE: this is, loosely, an XML assumption -- other
	 * languages would differ, but we'll "hard code" for XML for now.
	 * 
	 * future_TODO: this is a really bad heuristic ... we should be looking
	 * for odd number of quotes within a structuredDocumentRegion (or
	 * something!) This causes way too much reparsing on simple cases, like
	 * deleting a tag with a quoted attribute!
	 */
private StructuredDocumentEvent checkForQuotes() {
    // thing: deletion
    if (fChanges == null)
        // $NON-NLS-1$
        fChanges = "";
    // 
    StructuredDocumentEvent result = null;
    try {
        int dirtyStartPos = -1;
        String proposedDeletion = fStructuredDocument.get(fStart, fLengthToReplace);
        if (fStart < fStructuredDocument.getLength()) {
            if ((fChanges.indexOf(singleQuote) > -1) || (proposedDeletion.indexOf(singleQuote) > -1)) {
                IRegion singleQuoteRegion = getFindReplaceDocumentAdapter().find(fStart, singleQuote, false, false, false, false);
                if (singleQuoteRegion != null) {
                    dirtyStartPos = singleQuoteRegion.getOffset();
                }
            } else if ((fChanges.indexOf(doubleQuote) > -1) || (proposedDeletion.indexOf(doubleQuote) > -1)) {
                IRegion doubleQuoteRegion = getFindReplaceDocumentAdapter().find(fStart, doubleQuote, false, false, false, false);
                if (doubleQuoteRegion != null) {
                    dirtyStartPos = doubleQuoteRegion.getOffset();
                }
            }
        }
        if (dirtyStartPos > -1) {
            // then we found one, do create new structuredDocument event
            // based on the previous quote to end of document
            // except, we need to be positive that the previous quote is
            // in a "safe start" region (e.g. if in JSP content, we need
            // to
            // backup till we include the whole JSP region, in order for
            // it
            // to be correctly re-parsed. The backing up is done in the
            // reparse/find dirty start from hint
            // method.
            result = reparse(dirtyStartPos, fStructuredDocument.getLength() - 1);
        }
    } catch (BadLocationException e) {
        Logger.logException(e);
    }
    if (result != null) {
        result.setDeletedText(fDeletedText);
    }
    return result;
}

Example 12 with StructuredDocumentEvent

use of org.eclipse.wst.sse.core.internal.provisional.events.StructuredDocumentEvent in project webtools.sourceediting by eclipse.

the class StructuredDocumentReParser method checkForSelfClosing.

/**
 * Checks if the start region has become self-closing. e.g., <style> -> <style/>
 */
private StructuredDocumentEvent checkForSelfClosing(String tagName) {
    StructuredDocumentEvent result = null;
    if (dirtyStart.getText().toLowerCase().indexOf(tagName.toLowerCase()) >= 0) {
        // within a start-tag
        final int documentLength = fStructuredDocument.getLength();
        int end = fStart + fLengthToReplace + fChanges.length() + 1;
        if (end > documentLength)
            end = documentLength - 1;
        final String oldText = fStructuredDocument.get(fStart, 1);
        final String peek = StringUtils.paste(oldText, fChanges, 0, fLengthToReplace);
        if ("/>".equals(peek)) {
            // Reparse afterwards if the tag became self-closing
            result = reparse(dirtyStart.getStart(), documentLength - 1);
        }
    }
    return result;
}

Example 13 with StructuredDocumentEvent

use of org.eclipse.wst.sse.core.internal.provisional.events.StructuredDocumentEvent in project webtools.sourceediting by eclipse.

the class StructuredDocumentReParser method checkForCrossStructuredDocumentRegionBoundryCases.

// /**
// * Currently this method is pretty specific to ?ML
// * @deprecated - not really deprecated, but plan to make
// * protected ... I'm not sure why its public or misspelled?
// */
protected StructuredDocumentEvent checkForCrossStructuredDocumentRegionBoundryCases() {
    StructuredDocumentEvent result = null;
    // StructuredDocumentRegions be rescanned
    if (result == null) {
        result = checkForCrossStructuredDocumentRegionSyntax();
    }
    // Case 2: "block tags" whose content is left unparsed
    if (result == null) {
        Object parser = fStructuredDocument.getParser();
        if (parser instanceof BlockTagParser) {
            List blockTags = ((BlockTagParser) parser).getBlockMarkers();
            result = _checkBlockNodeList(blockTags);
        }
    }
    // or! do we already do it some other more central place?
    if (result != null) {
        result.setDeletedText(fDeletedText);
    }
    return result;
}

Example 14 with StructuredDocumentEvent

use of org.eclipse.wst.sse.core.internal.provisional.events.StructuredDocumentEvent in project webtools.sourceediting by eclipse.

the class StructuredDocumentReParser method checkForCrossStructuredDocumentRegionSyntax.

/**
 * Allow a reparser to check for extra syntactic cases that require
 * parsing beyond the flatNode boundary.
 *
 * This implementation is very XML-centric.
 */
protected StructuredDocumentEvent checkForCrossStructuredDocumentRegionSyntax() {
    StructuredDocumentEvent result;
    // Case 1: Quote characters are involved
    result = checkForQuotes();
    if (result == null) {
        // Case 2: The input forms or undoes a comment beginning or
        // comment
        // end
        result = checkForComments();
    }
    if (result == null) {
        // Case 3: The input forms or undoes a processing instruction
        result = checkForPI();
    }
    if (result == null) {
        // Case 4: The input forms or undoes a CDATA section
        result = checkForCDATA();
    }
    return result;
}

Example 15 with StructuredDocumentEvent

use of org.eclipse.wst.sse.core.internal.provisional.events.StructuredDocumentEvent in project webtools.sourceediting by eclipse.

the class StructuredDocumentReParser method quickCheck.

/**
 * A method to allow any heuristic "quick checks" that might cover many
 * many cases, before expending the time on a full reparse.
 */
public StructuredDocumentEvent quickCheck() {
    StructuredDocumentEvent result = null;
    // to handle, but only if there is one flatnode involved.
    if (dirtyStart != null && dirtyStart == dirtyEnd) {
        IStructuredDocumentRegion targetNode = dirtyStart;
        result = dirtyStart.updateRegion(fRequester, targetNode, fChanges, fStart, fLengthToReplace);
        if (result != null) {
            // at this point only, we need to update the text store and
            // and downstream nodes.
            // FUTURE_TO_DO: can this dependency on structuredDocument
            // method be eliminated?
            fStructuredDocument.updateDocumentData(fStart, fLengthToReplace, fChanges);
            IStructuredDocumentRegion firstDownStreamNode = targetNode.getNext();
            // any downstream ones
            if (firstDownStreamNode != null) {
                StructuredDocumentRegionIterator.adjustStart(firstDownStreamNode, fLengthDifference);
            }
        }
    }
    if (result != null) {
        result.setDeletedText(fDeletedText);
    }
    return result;
}