org.yaml.snakeyaml.events.SequenceStartEvent Java Examples

public void testGetEvent2() {
    String data = "american:\n  - Boston Red Sox";
    StreamReader reader = new StreamReader(data);
    Parser parser = new ParserImpl(reader);
    Mark dummyMark = new Mark("dummy", 0, 0, 0, "", 0);
    LinkedList<Event> etalonEvents = new LinkedList<Event>();
    etalonEvents.add(new StreamStartEvent(dummyMark, dummyMark));
    etalonEvents.add(new DocumentStartEvent(dummyMark, dummyMark, false, null, null));
    etalonEvents
            .add(new MappingStartEvent(null, null, true, dummyMark, dummyMark, Boolean.TRUE));
    etalonEvents.add(new ScalarEvent(null, null, new ImplicitTuple(true, false), "american",
            dummyMark, dummyMark, (char) 0));
    etalonEvents.add(new SequenceStartEvent(null, null, true, dummyMark, dummyMark,
            Boolean.FALSE));
    etalonEvents.add(new ScalarEvent(null, null, new ImplicitTuple(true, false),
            "Boston Red Sox", dummyMark, dummyMark, (char) 0));
    etalonEvents.add(new SequenceEndEvent(dummyMark, dummyMark));
    etalonEvents.add(new MappingEndEvent(dummyMark, dummyMark));
    etalonEvents.add(new DocumentEndEvent(dummyMark, dummyMark, false));
    etalonEvents.add(new StreamEndEvent(dummyMark, dummyMark));
    check(etalonEvents, parser);
}
 

private boolean needMoreEvents()
{
    if (this.events.isEmpty())
    {
        return true;
    }
    Event event = this.events.peek();
    if (event instanceof DocumentStartEvent)
    {
        return this.needEvents(1);
    }
    else if (event instanceof SequenceStartEvent)
    {
        return this.needEvents(2);
    }
    else if (event instanceof MappingStartEvent)
    {
        return this.needEvents(3);
    }
    else
    {
        return false;
    }
}
 

private boolean needMoreEvents() {
    if (events.isEmpty()) {
        return true;
    }
    Event event = events.peek();
    if (event instanceof DocumentStartEvent) {
        return needEvents(1);
    } else if (event instanceof SequenceStartEvent) {
        return needEvents(2);
    } else if (event instanceof MappingStartEvent) {
        return needEvents(3);
    } else {
        return false;
    }
}
 

private void expectNode(boolean root, boolean mapping, boolean simpleKey) throws IOException {
    rootContext = root;
    mappingContext = mapping;
    simpleKeyContext = simpleKey;
    if (event instanceof AliasEvent) {
        expectAlias();
    } else if (event instanceof ScalarEvent || event instanceof CollectionStartEvent) {
        processAnchor("&");
        processTag();
        if (event instanceof ScalarEvent) {
            expectScalar();
        } else if (event instanceof SequenceStartEvent) {
            if (flowLevel != 0 || canonical || ((SequenceStartEvent) event).getFlowStyle()
                    || checkEmptySequence()) {
                expectFlowSequence();
            } else {
                expectBlockSequence();
            }
        } else {// MappingStartEvent
            if (flowLevel != 0 || canonical || ((MappingStartEvent) event).getFlowStyle()
                    || checkEmptyMapping()) {
                expectFlowMapping();
            } else {
                expectBlockMapping();
            }
        }
    } else {
        throw new EmitterException("expected NodeEvent, but got " + event);
    }
}
 

private boolean needMoreEvents() {
    if (events.isEmpty()) {
        return true;
    }
    Event event = events.peek();
    if (event instanceof DocumentStartEvent) {
        return needEvents(1);
    } else if (event instanceof SequenceStartEvent) {
        return needEvents(2);
    } else if (event instanceof MappingStartEvent) {
        return needEvents(3);
    } else {
        return false;
    }
}
 

private void expectNode(boolean root, boolean mapping, boolean simpleKey) throws IOException {
    rootContext = root;
    mappingContext = mapping;
    simpleKeyContext = simpleKey;
    if (event instanceof AliasEvent) {
        expectAlias();
    } else if (event instanceof ScalarEvent || event instanceof CollectionStartEvent) {
        processAnchor("&");
        processTag();
        if (event instanceof ScalarEvent) {
            expectScalar();
        } else if (event instanceof SequenceStartEvent) {
            if (flowLevel != 0 || canonical || ((SequenceStartEvent) event).getFlowStyle()
                    || checkEmptySequence()) {
                expectFlowSequence();
            } else {
                expectBlockSequence();
            }
        } else {// MappingStartEvent
            if (flowLevel != 0 || canonical || ((MappingStartEvent) event).getFlowStyle()
                    || checkEmptyMapping()) {
                expectFlowMapping();
            } else {
                expectBlockMapping();
            }
        }
    } else {
        throw new EmitterException("expected NodeEvent, but got " + event);
    }
}
 

private void serializeNode(Node node, Node parent) throws IOException {
    if (node.getNodeId() == NodeId.anchor) {
        node = ((AnchorNode) node).getRealNode();
    }
    String tAlias = this.anchors.get(node);
    if (this.serializedNodes.contains(node)) {
        this.emitter.emit(new AliasEvent(tAlias, null, null));
    } else {
        this.serializedNodes.add(node);
        switch (node.getNodeId()) {
        case scalar:
            ScalarNode scalarNode = (ScalarNode) node;
            Tag detectedTag = this.resolver.resolve(NodeId.scalar, scalarNode.getValue(), true);
            Tag defaultTag = this.resolver.resolve(NodeId.scalar, scalarNode.getValue(), false);
            ImplicitTuple tuple = new ImplicitTuple(node.getTag().equals(detectedTag), node
                    .getTag().equals(defaultTag));
            ScalarEvent event = new ScalarEvent(tAlias, node.getTag().getValue(), tuple,
                    scalarNode.getValue(), null, null, scalarNode.getStyle());
            this.emitter.emit(event);
            break;
        case sequence:
            SequenceNode seqNode = (SequenceNode) node;
            boolean implicitS = (node.getTag().equals(this.resolver.resolve(NodeId.sequence,
                    null, true)));
            this.emitter.emit(new SequenceStartEvent(tAlias, node.getTag().getValue(),
                    implicitS, null, null, seqNode.getFlowStyle()));
            int indexCounter = 0;
            List<Node> list = seqNode.getValue();
            for (Node item : list) {
                serializeNode(item, node);
                indexCounter++;
            }
            this.emitter.emit(new SequenceEndEvent(null, null));
            break;
        default:// instance of MappingNode
            Tag implicitTag = this.resolver.resolve(NodeId.mapping, null, true);
            boolean implicitM = (node.getTag().equals(implicitTag));
            this.emitter.emit(new MappingStartEvent(tAlias, node.getTag().getValue(),
                    implicitM, null, null, ((CollectionNode) node).getFlowStyle()));
            MappingNode mnode = (MappingNode) node;
            List<NodeTuple> map = mnode.getValue();
            for (NodeTuple row : map) {
                Node key = row.getKeyNode();
                Node value = row.getValueNode();
                serializeNode(key, mnode);
                serializeNode(value, mnode);
            }
            this.emitter.emit(new MappingEndEvent(null, null));
        }
    }
}
 

private boolean checkEmptySequence() {
    return (event instanceof SequenceStartEvent && !events.isEmpty() && events.peek() instanceof SequenceEndEvent);
}
 

private void serializeNode(Node node, Node parent) throws IOException {
    if (node.getNodeId() == NodeId.anchor) {
        node = ((AnchorNode) node).getRealNode();
    }
    String tAlias = this.anchors.get(node);
    if (this.serializedNodes.contains(node)) {
        this.emitter.emit(new AliasEvent(tAlias, null, null));
    } else {
        this.serializedNodes.add(node);
        switch (node.getNodeId()) {
        case scalar:
            ScalarNode scalarNode = (ScalarNode) node;
            Tag detectedTag = this.resolver.resolve(NodeId.scalar, scalarNode.getValue(), true);
            Tag defaultTag = this.resolver.resolve(NodeId.scalar, scalarNode.getValue(), false);
            ImplicitTuple tuple = new ImplicitTuple(node.getTag().equals(detectedTag), node
                    .getTag().equals(defaultTag));
            ScalarEvent event = new ScalarEvent(tAlias, node.getTag().getValue(), tuple,
                    scalarNode.getValue(), null, null, scalarNode.getStyle());
            this.emitter.emit(event);
            break;
        case sequence:
            SequenceNode seqNode = (SequenceNode) node;
            boolean implicitS = node.getTag().equals(this.resolver.resolve(NodeId.sequence,
                    null, true));
            this.emitter.emit(new SequenceStartEvent(tAlias, node.getTag().getValue(),
                    implicitS, null, null, seqNode.getFlowStyle()));
            List<Node> list = seqNode.getValue();
            for (Node item : list) {
                serializeNode(item, node);
            }
            this.emitter.emit(new SequenceEndEvent(null, null));
            break;
        default:// instance of MappingNode
            Tag implicitTag = this.resolver.resolve(NodeId.mapping, null, true);
            boolean implicitM = node.getTag().equals(implicitTag);
            this.emitter.emit(new MappingStartEvent(tAlias, node.getTag().getValue(),
                    implicitM, null, null, ((CollectionNode) node).getFlowStyle()));
            MappingNode mnode = (MappingNode) node;
            List<NodeTuple> map = mnode.getValue();
            for (NodeTuple row : map) {
                Node key = row.getKeyNode();
                Node value = row.getValueNode();
                serializeNode(key, mnode);
                serializeNode(value, mnode);
            }
            this.emitter.emit(new MappingEndEvent(null, null));
        }
    }
}
 

private boolean checkEmptySequence() {
    return event instanceof SequenceStartEvent && !events.isEmpty() && events.peek() instanceof SequenceEndEvent;
}
 

void expectNode(boolean root, boolean mapping, boolean simpleKey, @Nullable Integer lastIndent) throws IOException
{
    this.rootContext = root;
    this.mappingContext = mapping;
    this.simpleKeyContext = simpleKey;
    if (this.event instanceof AliasEvent)
    {
        this.expectAlias();
    }
    else if ((this.event instanceof ScalarEvent) || (this.event instanceof CollectionStartEvent))
    {
        this.processAnchor("&");
        this.processTag();
        if (this.event instanceof ScalarEvent)
        {
            this.expectScalar(lastIndent);
        }
        else if (this.event instanceof SequenceStartEvent)
        {
            if ((this.flowLevel != 0) || this.canonical || ((SequenceStartEvent) this.event).getFlowStyle()
                || this.checkEmptySequence())
            {
                this.expectFlowSequence();
            }
            else
            {
                this.expectBlockSequence();
            }
        }
        else
        {// MappingStartEvent
            if ((this.flowLevel != 0) || this.canonical || ((MappingStartEvent) this.event).getFlowStyle() || this.checkEmptyMapping())
            {
                this.expectFlowMapping();
            }
            else
            {
                this.expectBlockMapping();
            }
        }
    }
    else
    {
        throw new EmitterException("expected NodeEvent, but got " + this.event);
    }
}
 

private boolean checkEmptySequence()
{
    return (this.event instanceof SequenceStartEvent) && ! this.events.isEmpty() && (this.events.peek() instanceof SequenceEndEvent);
}
 

private void serializeNode(Node node, @Nullable Node parent, LinkedList<String> commentPath, boolean mappingScalar) throws IOException
{
    if (node.getNodeId() == NodeId.anchor)
    {
        node = ((AnchorNode) node).getRealNode();
    }
    String tAlias = this.anchors.get(node);
    if (this.serializedNodes.contains(node))
    {
        this.emitter.emit(new AliasEvent(tAlias, null, null));
    }
    else
    {
        this.serializedNodes.add(node);
        switch (node.getNodeId())
        {
            case scalar:
                ScalarNode scalarNode = (ScalarNode) node;
                Tag detectedTag = this.resolver.resolve(NodeId.scalar, scalarNode.getValue(), true);
                Tag defaultTag = this.resolver.resolve(NodeId.scalar, scalarNode.getValue(), false);
                String[] pathNodes = commentPath.toArray(new String[commentPath.size()]);
                String comment;
                if (this.checkCommentsSet(pathNodes))
                {
                    comment = this.comments.getComment(pathNodes);
                }
                else
                {
                    comment = null;
                }
                ImplicitTuple tuple = new ImplicitTupleExtension(node.getTag().equals(detectedTag), node.getTag().equals(defaultTag), comment);
                ScalarEvent event = new ScalarEvent(tAlias, node.getTag().getValue(), tuple, scalarNode.getValue(), null, null, scalarNode.getStyle());
                this.emitter.emit(event);
                break;
            case sequence:
                SequenceNode seqNode = (SequenceNode) node;
                boolean implicitS = node.getTag().equals(this.resolver.resolve(NodeId.sequence, null, true));
                this.emitter.emit(new SequenceStartEvent(tAlias, node.getTag().getValue(), implicitS, null, null, seqNode.getFlowStyle()));
                List<Node> list = seqNode.getValue();
                for (Node item : list)
                {
                    this.serializeNode(item, node, commentPath, false);
                }
                this.emitter.emit(new SequenceEndEvent(null, null));
                break;
            default:// instance of MappingNode
                Tag implicitTag = this.resolver.resolve(NodeId.mapping, null, true);
                boolean implicitM = node.getTag().equals(implicitTag);
                this.emitter.emit(new MappingStartEvent(tAlias, node.getTag().getValue(), implicitM, null, null, ((CollectionNode) node).getFlowStyle()));
                MappingNode mnode = (MappingNode) node;
                List<NodeTuple> map = mnode.getValue();
                for (NodeTuple row : map)
                {
                    Node key = row.getKeyNode();
                    Node value = row.getValueNode();
                    if (key instanceof ScalarNode)
                    {
                        commentPath.add(((ScalarNode) key).getValue());
                    }
                    this.serializeNode(key, mnode, commentPath, true);
                    this.serializeNode(value, mnode, commentPath, false);
                    if (key instanceof ScalarNode)
                    {
                        commentPath.removeLast();
                    }
                }
                this.emitter.emit(new MappingEndEvent(null, null));
        }
    }
}