protected void populateMap()

in xstream/src/java/com/thoughtworks/xstream/converters/extended/NamedMapConverter.java [275:340]
58 lines of code
21 McCabe index (conditional complexity)

    protected void populateMap(final HierarchicalStreamReader reader, final UnmarshallingContext context,
            final Map<?, ?> map, final Map<?, ?> target) {
        SingleValueConverter keyConverter = null;
        SingleValueConverter valueConverter = null;
        if (keyAsAttribute) {
            keyConverter = getSingleValueConverter(keyType, "key");
        }
        if (valueAsAttribute || valueName == null) {
            valueConverter = getSingleValueConverter(valueType, "value");
        }

        while (reader.hasMoreChildren()) {
            Object key = null;
            Object value = null;

            if (entryName != null) {
                reader.moveDown();

                if (keyConverter != null) {
                    final String attribute = reader.getAttribute(keyName);
                    if (attribute != null) {
                        key = keyConverter.fromString(attribute);
                    }
                }

                if (valueAsAttribute && valueConverter != null) {
                    final String attribute = reader.getAttribute(valueName);
                    if (attribute != null) {
                        value = valueConverter.fromString(attribute);
                    }
                }
            }

            if (keyConverter == null) {
                reader.moveDown();
                if (valueConverter == null && !keyName.equals(valueName) && reader.getNodeName().equals(valueName)) {
                    value = readItem(valueType, reader, context, map);
                } else {
                    key = readItem(keyType, reader, context, map);
                }
                reader.moveUp();
            }

            if (valueConverter == null) {
                reader.moveDown();
                if (keyConverter == null && key == null && value != null) {
                    key = readItem(keyType, reader, context, map);
                } else {
                    value = readItem(valueType, reader, context, map);
                }
                reader.moveUp();
            } else if (!valueAsAttribute) {
                value = valueConverter.fromString(reader.getValue());
            }

            @SuppressWarnings("unchecked")
            final Map<Object, Object> targetMap = (Map<Object, Object>)target;
            final long now = System.currentTimeMillis();
            targetMap.put(key, value);
            SecurityUtils.checkForCollectionDoSAttack(context, now);

            if (entryName != null) {
                reader.moveUp();
            }
        }
    }