* See the License for the specific language governing permissions and
 * limitations under the License.
 */
package gradlebuild.docs.dsl.docbook.model

class MixinMetaData {
    final String pluginId
    final String mixinClass

    MixinMetaData(String pluginId, String mixinClass) {
        this.pluginId = pluginId
        this.mixinClass = mixinClass
    }

class ClassExtensionMetaData {
    final String targetClass
    final Set<MixinMetaData> mixinClasses = []
    final Set<ExtensionMetaData> extensionClasses = []

    ClassExtensionMetaData(String targetClass) {
        this.targetClass = targetClass
    }

    def void addMixin(String plugin, String mixinClass) {
        mixinClasses.add(new MixinMetaData(plugin, mixinClass))
    }

    /**
     * Builds the extension meta-data for the given class.
     */
    public void build(ClassDoc classDoc) {
        Map<String, ClassExtensionDoc> plugins = new HashMap<String, ClassExtensionDoc>();
        for (MixinMetaData mixin : classDoc.getExtensionMetaData().getMixinClasses()) {
            String pluginId = mixin.getPluginId();
            ClassExtensionDoc classExtensionDoc = plugins.get(pluginId);
            if (classExtensionDoc == null) {