Examples of org.yaml.snakeyaml.events.DocumentStartEvent

org.yaml.snakeyaml.events.DocumentStartEvent
Marks the beginning of a document.
This event followed by the document's content and a {@link DocumentEndEvent}.

            this.first = first;
        }


        public void expect() throws IOException {
            if (event instanceof DocumentStartEvent) {
                DocumentStartEvent ev = (DocumentStartEvent) event;
                if ((ev.getVersion() != null || ev.getTags() != null) && openEnded) {
                    writeIndicator("...", true, false, false);
                    writeIndent();
                }
                if (ev.getVersion() != null) {
                    String versionText = prepareVersion(ev.getVersion());
                    writeVersionDirective(versionText);
                }
                tagPrefixes = new LinkedHashMap<String, String>(DEFAULT_TAG_PREFIXES);
                if (ev.getTags() != null) {
                    Set<String> handles = new TreeSet<String>(ev.getTags().keySet());
                    for (String handle : handles) {
                        String prefix = ev.getTags().get(handle);
                        tagPrefixes.put(prefix, handle);
                        String handleText = prepareTagHandle(handle);
                        String prefixText = prepareTagPrefix(prefix);
                        writeTagDirective(handleText, prefixText);
                    }
                }
                boolean implicit = first && !ev.getExplicit() && !canonical
                        && ev.getVersion() == null
                        && (ev.getTags() == null || ev.getTags().isEmpty())
                        && !checkEmptyDocument();
                if (!implicit) {
                    writeIndent();
                    writeIndicator("---", true, false, false);
                    if (canonical) {

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            if (!scanner.checkToken(Token.ID.Directive, Token.ID.DocumentStart, Token.ID.StreamEnd)) {
                directives = new VersionTagsTuple(null, DEFAULT_TAGS);
                Token token = scanner.peekToken();
                Mark startMark = token.getStartMark();
                Mark endMark = startMark;
                Event event = new DocumentStartEvent(startMark, endMark, false, null, null);
                // Prepare the next state.
                states.push(new ParseDocumentEnd());
                state = new ParseBlockNode();
                return event;
            } else {

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                    throw new ParserException(null, null, "expected '<document start>', but found "
                            + scanner.peekToken().getTokenId(), scanner.peekToken().getStartMark());
                }
                token = scanner.getToken();
                Mark endMark = token.getEndMark();
                event = new DocumentStartEvent(startMark, endMark, true, tuple.getVersion(),
                        tuple.getTags());
                states.push(new ParseDocumentEnd());
                state = new ParseDocumentContent();
            } else {
                // Parse the end of the stream.

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