private void preprocessDOM_addRanks_underBookRank()

in freemarker-docgen-core/src/main/java/org/freemarker/docgen/core/Transform.java [1706:1751]

• 40 lines of code
• 12 McCabe index (conditional complexity)

    private void preprocessDOM_addRanks_underBookRank(Element root) {
        // Find the common rank:
        DocumentStructureRank commonRank = null;
        for (Element child : XMLUtil.childrenElementsOf(root)) {
            String name = child.getLocalName();
            if (name.equals(E_PART)) {
                if (commonRank != null
                        && !commonRank.equals(DocumentStructureRank.PART)) {
                    throw new DocgenException("Bad document structure: "
                            + XMLUtil.theSomethingElement(child) + " is on the "
                            + "same ToC level with a \"" + E_CHAPTER
                            + "\" element.");
                }
                commonRank = DocumentStructureRank.PART;
            } else if (name.equals(E_CHAPTER)) {
                if (commonRank != null
                        && !commonRank.equals(DocumentStructureRank.CHAPTER)) {
                    throw new DocgenException("Bad document structure: "
                            + XMLUtil.theSomethingElement(child) + " is on the "
                            + "same ToC level with a \"" + E_PART
                            + "\" element.");
                }
                commonRank = DocumentStructureRank.CHAPTER;
            }
        }
        if (commonRank == null) {
            commonRank = DocumentStructureRank.CHAPTER;
        }

        // Apply the common rank plus go deeper:
        for (Element child : XMLUtil.childrenElementsOf(root)) {
            if (DOCUMENT_STRUCTURE_ELEMENTS.contains(child.getLocalName())) {
                child.setAttribute(
                        A_DOCGEN_RANK, commonRank.toString());
                // Even if this node received part rank, its children will not
                // "feel like" being the children of a true part, unless its
                // indeed a part:
                if (child.getLocalName().equals(E_PART)) {
                    preprocessDOM_addRanks_underTruePart(child);
                } else {
                    preprocessDOM_addRanks_underChapterRankOrDeeper(
                            child, 0);
                }
            }
        }
    }