private static LevenshteinResults findDetailedResults()

in src/main/java/org/apache/commons/text/similarity/LevenshteinDetailedDistance.java [52:134]
71 lines of code
27 McCabe index (conditional complexity)

    private static <E> LevenshteinResults findDetailedResults(final SimilarityInput<E> left,
                                                          final SimilarityInput<E> right,
                                                          final int[][] matrix,
                                                          final boolean swapped) {

        int delCount = 0;
        int addCount = 0;
        int subCount = 0;

        int rowIndex = right.length();
        int columnIndex = left.length();

        int dataAtLeft = 0;
        int dataAtTop = 0;
        int dataAtDiagonal = 0;
        int data = 0;
        boolean deleted = false;
        boolean added = false;

        while (rowIndex >= 0 && columnIndex >= 0) {

            if (columnIndex == 0) {
                dataAtLeft = -1;
            } else {
                dataAtLeft = matrix[rowIndex][columnIndex - 1];
            }
            if (rowIndex == 0) {
                dataAtTop = -1;
            } else {
                dataAtTop = matrix[rowIndex - 1][columnIndex];
            }
            if (rowIndex > 0 && columnIndex > 0) {
                dataAtDiagonal = matrix[rowIndex - 1][columnIndex - 1];
            } else {
                dataAtDiagonal = -1;
            }
            if (dataAtLeft == -1 && dataAtTop == -1 && dataAtDiagonal == -1) {
                break;
            }
            data = matrix[rowIndex][columnIndex];

            // case in which the character at left and right are the same,
            // in this case none of the counters will be incremented.
            if (columnIndex > 0 && rowIndex > 0 && left.at(columnIndex - 1).equals(right.at(rowIndex - 1))) {
                columnIndex--;
                rowIndex--;
                continue;
            }

            // handling insert and delete cases.
            deleted = false;
            added = false;
            if (data - 1 == dataAtLeft && data <= dataAtDiagonal && data <= dataAtTop
                    || dataAtDiagonal == -1 && dataAtTop == -1) { // NOPMD
                columnIndex--;
                if (swapped) {
                    addCount++;
                    added = true;
                } else {
                    delCount++;
                    deleted = true;
                }
            } else if (data - 1 == dataAtTop && data <= dataAtDiagonal && data <= dataAtLeft
                    || dataAtDiagonal == -1 && dataAtLeft == -1) { // NOPMD
                rowIndex--;
                if (swapped) {
                    delCount++;
                    deleted = true;
                } else {
                    addCount++;
                    added = true;
                }
            }

            // substituted case
            if (!added && !deleted) {
                subCount++;
                columnIndex--;
                rowIndex--;
            }
        }
        return new LevenshteinResults(addCount + delCount + subCount, addCount, delCount, subCount);
    }