Examples with IHiddenRegion org.eclipse.xtext.formatting2.regionaccess.IHiddenRegion used on opensource projects

Example 11 with IHiddenRegion

use of org.eclipse.xtext.formatting2.regionaccess.IHiddenRegion in project xtext-core by eclipse.

the class FormattableDocument method surround.

@Override
public <T extends EObject> T surround(T owner, Procedure1<? super IHiddenRegionFormatter> beforeAndAfter) {
    if (owner != null && !owner.eIsProxy()) {
        IEObjectRegion region = getTextRegionAccess().regionForEObject(owner);
        if (region == null)
            return owner;
        IHiddenRegion previous = region.getPreviousHiddenRegion();
        IHiddenRegion next = region.getNextHiddenRegion();
        set(previous, next, beforeAndAfter);
    }
    return owner;
}

Example 12 with IHiddenRegion

use of org.eclipse.xtext.formatting2.regionaccess.IHiddenRegion in project xtext-core by eclipse.

the class PartialSerializer method trySerializeMultiValue.

protected List<SerializationStrategy> trySerializeMultiValue(EObject owner, FeatureChange change, IEObjectRegion ownerRegion, IConstraint constraint) {
    EStructuralFeature feature = change.getFeature();
    List<SerializationStrategy> result = Lists.newArrayList();
    IFeatureInfo featureInfo = constraint.getFeatures()[owner.eClass().getFeatureID(feature)];
    List<IConstraintElement> assignments = featureInfo.getAssignments();
    if (assignments.size() != 1) {
        return null;
    }
    IConstraintElement assignment = assignments.get(0);
    if (!assignment.isMany()) {
        return null;
    }
    List<IAstRegion> originals = findRegions(ownerRegion, change);
    EList<ListChange> listChanges = change.getListChanges();
    if (listChanges.isEmpty() && originals.isEmpty()) {
        ISerializationContext ctx = getSerializationContext(owner);
        AbstractElement ins = assignment.getGrammarElement();
        IHiddenRegion insertAt = insertionPointFinder.findInsertionPoint(ctx, ownerRegion, ins);
        if (insertAt == null) {
            return null;
        }
        for (Object value : (List<?>) owner.eGet(feature)) {
            EObject obj = (EObject) value;
            ISerializationContext context = getSerializationContext(obj);
            result.add(new SerializeRecursiveStrategy(insertAt, obj, context));
        }
        return result;
    }
    // ListTransient listTransient = transientValues.isListTransient(owner, feature);
    List<Object> modifying = Lists.newArrayList(((List<?>) owner.eGet(feature)));
    for (ListChange lc : listChanges) {
        ChangeKind kind = lc.getKind();
        if (kind == ADD_LITERAL) {
            IAstRegion region = originals.get(lc.getIndex());
            result.add(new DeleteRegionStrategy(region));
        } else if (kind == MOVE_LITERAL || kind == REMOVE_LITERAL) {
            if (originals.isEmpty()) {
                return null;
            }
            int index = lc.getIndex();
            IHiddenRegion insertAt;
            if (index >= originals.size()) {
                insertAt = ((ISequentialRegion) originals.get(originals.size() - 1)).getNextHiddenRegion();
            } else {
                insertAt = ((ISequentialRegion) originals.get(index)).getPreviousHiddenRegion();
            }
            EObject value = (EObject) modifying.get(index);
            modifying.remove(index);
            if (kind == REMOVE_LITERAL) {
                ISerializationContext context = getSerializationContext(value);
                result.add(new SerializeRecursiveStrategy(insertAt, value, context));
            } else if (kind == ChangeKind.MOVE_LITERAL) {
                int moveToIndex = lc.getMoveToIndex();
                IAstRegion source = originals.get(moveToIndex);
                result.add(new DeleteRegionStrategy(source));
                result.add(new InsertRegionStrategy(insertAt, source));
            }
        }
    }
    return result;
}

Example 13 with IHiddenRegion

use of org.eclipse.xtext.formatting2.regionaccess.IHiddenRegion in project xtext-core by eclipse.

the class StringBasedTextRegionAccessDiffBuilder method createList.

protected List<Rewrite> createList() {
    List<Rewrite> sorted = Lists.newArrayList(rewrites);
    Collections.sort(sorted);
    List<Rewrite> result = Lists.newArrayListWithExpectedSize(sorted.size() * 2);
    IHiddenRegion last = original.regionForRootEObject().getPreviousHiddenRegion();
    for (Rewrite rw : sorted) {
        int lastOffset = last.getOffset();
        int rwOffset = rw.originalFirst.getOffset();
        if (rwOffset == lastOffset) {
            result.add(rw);
            last = rw.originalLast;
        } else if (rwOffset > lastOffset) {
            result.add(new Preserve(last, rw.originalFirst));
            result.add(rw);
            last = rw.originalLast;
        } else {
            LOG.error("Error, conflicting document modifications.");
        }
    }
    IHiddenRegion end = original.regionForRootEObject().getNextHiddenRegion();
    if (last.getOffset() < end.getOffset()) {
        result.add(new Preserve(last, end));
    }
    return result;
}

Example 14 with IHiddenRegion

use of org.eclipse.xtext.formatting2.regionaccess.IHiddenRegion in project xtext-core by eclipse.

the class StringBasedTextRegionAccessDiffBuilder method replace.

@Override
public void replace(IHiddenRegion originalFirst, IHiddenRegion originalLast, ITextRegionAccess acc) {
    checkOriginal(originalFirst);
    checkOriginal(originalLast);
    IEObjectRegion substituteRoot = acc.regionForRootEObject();
    IHiddenRegion substituteFirst = substituteRoot.getPreviousHiddenRegion();
    IHiddenRegion substituteLast = substituteRoot.getNextHiddenRegion();
    replace(originalFirst, originalLast, substituteFirst, substituteLast);
}

Example 15 with IHiddenRegion

use of org.eclipse.xtext.formatting2.regionaccess.IHiddenRegion in project xtext-core by eclipse.

the class StringBasedTextRegionAccessDiffBuilder method create.

@Override
public StringBasedTextRegionAccessDiff create() {
    StringBasedTextRegionAccessDiffAppender appender = createAppender();
    IEObjectRegion root = original.regionForRootEObject();
    appender.copyAndAppend(root.getPreviousHiddenRegion(), PREVIOUS);
    appender.copyAndAppend(root.getPreviousHiddenRegion(), CONTAINER);
    List<Rewrite> rws = createList();
    IHiddenRegion last = null;
    for (Rewrite rw : rws) {
        boolean diff = rw.isDiff();
        if (diff) {
            appender.beginDiff();
        }
        if (rw instanceof Insert) {
            Insert ins = (Insert) rw;
            IHiddenRegion f = ins.getInsertFirst();
            IHiddenRegion l = ins.getInsertLast();
            appender.copyAndAppend(f, NEXT);
            if (f != l) {
                appender.copyAndAppend(f.getNextSemanticRegion(), l.getPreviousSemanticRegion());
            }
            appender.copyAndAppend(l, PREVIOUS);
        }
        if (diff) {
            appender.endDiff();
        }
        if (rw.originalLast != last) {
            appender.copyAndAppend(rw.originalLast, CONTAINER);
        }
        last = rw.originalLast;
    }
    appender.copyAndAppend(root.getNextHiddenRegion(), NEXT);
    StringBasedTextRegionAccessDiff result = appender.finish();
    AbstractEObjectRegion newRoot = result.regionForEObject(root.getSemanticElement());
    result.setRootEObject(newRoot);
    return result;
}