NodeAddData createNodeAddData()

in src/main/java/org/apache/commons/configuration2/tree/xpath/XPathExpressionEngine.java [293:337]
42 lines of code
12 McCabe index (conditional complexity)

    <T> NodeAddData<T> createNodeAddData(final String path, final QueryResult<T> parentNodeResult) {
        if (parentNodeResult.isAttributeResult()) {
            invalidPath(path, " cannot add properties to an attribute.");
        }
        final List<String> pathNodes = new LinkedList<>();
        String lastComponent = null;
        boolean attr = false;
        boolean first = true;

        final StringTokenizer tok = new StringTokenizer(path, NODE_PATH_DELIMITERS, true);
        while (tok.hasMoreTokens()) {
            final String token = tok.nextToken();
            if (PATH_DELIMITER.equals(token)) {
                if (attr) {
                    invalidPath(path, " contains an attribute" + " delimiter at a disallowed position.");
                }
                if (lastComponent == null) {
                    invalidPath(path, " contains a '/' at a disallowed position.");
                }
                pathNodes.add(lastComponent);
                lastComponent = null;
            } else if (ATTR_DELIMITER.equals(token)) {
                if (attr) {
                    invalidPath(path, " contains multiple attribute delimiters.");
                }
                if (lastComponent == null && !first) {
                    invalidPath(path, " contains an attribute delimiter at a disallowed position.");
                }
                if (lastComponent != null) {
                    pathNodes.add(lastComponent);
                }
                attr = true;
                lastComponent = null;
            } else {
                lastComponent = token;
            }
            first = false;
        }

        if (lastComponent == null) {
            invalidPath(path, "contains no components.");
        }

        return new NodeAddData<>(parentNodeResult.getNode(), lastComponent, attr, pathNodes);
    }