Examples with FoldingRange org.eclipse.lsp4j.FoldingRange used on opensource projects

Example 6 with FoldingRange

use of org.eclipse.lsp4j.FoldingRange in project eclipse.jdt.ls by eclipse.

the class FoldingRangeHandler method foldingRange.

public List<FoldingRange> foldingRange(FoldingRangeRequestParams params, IProgressMonitor monitor) {
    List<FoldingRange> $ = new ArrayList<>();
    ITypeRoot unit = null;
    try {
        PreferenceManager preferenceManager = JavaLanguageServerPlugin.getInstance().getPreferencesManager();
        boolean returnCompilationUnit = preferenceManager == null ? false : preferenceManager.isClientSupportsClassFileContent() && (preferenceManager.getPreferences().isIncludeDecompiledSources());
        unit = JDTUtils.resolveTypeRoot(params.getTextDocument().getUri(), returnCompilationUnit, monitor);
        if (unit == null || (monitor != null && monitor.isCanceled())) {
            return $;
        }
        computeFoldingRanges($, unit, monitor);
        return $;
    } finally {
        JDTUtils.discardClassFileWorkingCopy(unit);
    }
}

Example 7 with FoldingRange

use of org.eclipse.lsp4j.FoldingRange in project eclipse.jdt.ls by eclipse.

the class FoldingRangeHandler method computeFoldingRanges.

private void computeFoldingRanges(List<FoldingRange> foldingRanges, ITypeRoot unit, IProgressMonitor monitor) {
    try {
        ISourceRange range = unit.getSourceRange();
        if (!SourceRange.isAvailable(range)) {
            return;
        }
        String contents = unit.getSource();
        if (StringUtils.isBlank(contents)) {
            return;
        }
        final int shift = range.getOffset();
        IScanner scanner = getScanner();
        scanner.setSource(contents.toCharArray());
        scanner.resetTo(shift, shift + range.getLength());
        int start = shift;
        int token = 0;
        Stack<Integer> regionStarts = new Stack<>();
        while (token != ITerminalSymbols.TokenNameEOF) {
            start = scanner.getCurrentTokenStartPosition();
            switch(token) {
                case ITerminalSymbols.TokenNameCOMMENT_JAVADOC:
                case ITerminalSymbols.TokenNameCOMMENT_BLOCK:
                    int end = scanner.getCurrentTokenEndPosition();
                    FoldingRange commentFoldingRange = new FoldingRange(scanner.getLineNumber(start) - 1, scanner.getLineNumber(end) - 1);
                    commentFoldingRange.setKind(FoldingRangeKind.Comment);
                    foldingRanges.add(commentFoldingRange);
                    break;
                case ITerminalSymbols.TokenNameCOMMENT_LINE:
                    String currentSource = String.valueOf(scanner.getCurrentTokenSource());
                    if (REGION_START_PATTERN.matcher(currentSource).lookingAt()) {
                        regionStarts.push(start);
                    } else if (REGION_END_PATTERN.matcher(currentSource).lookingAt()) {
                        if (regionStarts.size() > 0) {
                            FoldingRange regionFolding = new FoldingRange(scanner.getLineNumber(regionStarts.pop()) - 1, scanner.getLineNumber(start) - 1);
                            regionFolding.setKind(FoldingRangeKind.Region);
                            foldingRanges.add(regionFolding);
                        }
                    }
                    break;
                default:
                    break;
            }
            token = getNextToken(scanner);
        }
        computeTypeRootRanges(foldingRanges, unit, scanner);
    } catch (CoreException e) {
        JavaLanguageServerPlugin.logException("Problem with folding range for " + unit.getPath().toPortableString(), e);
        monitor.setCanceled(true);
    }
}