ConfigurableRegistry.java

/**
ha * Copyright (c) Lambda Innovation, 2013-2015
 * 本作品版权由Lambda Innovation所有。
 * http://www.li-dev.cn/
 *
 * This project is open-source, and it is distributed under 
 * the terms of GNU General Public License. You can modify
 * and distribute freely as long as you follow the license.
 * 本项目是一个开源项目，且遵循GNU通用公共授权协议。
 * 在遵照该协议的情况下，您可以自由传播和修改。
 * http://www.gnu.org/licenses/gpl.html
 */
package cn.liutils.registry;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Map;

import net.minecraftforge.common.config.Configuration;
import cn.annoreg.core.AnnotationData;
import cn.annoreg.core.LoadStage;
import cn.annoreg.core.RegModInformation;
import cn.annoreg.core.RegistryType;
import cn.annoreg.core.RegistryTypeDecl;
import cn.liutils.api.LIGeneralRegistry;
import cn.liutils.core.LIUtils;

@RegistryTypeDecl
public class ConfigurableRegistry extends RegistryType {

    @Target(ElementType.TYPE)
    @Retention(RetentionPolicy.RUNTIME)
    public @interface RegConfigurable {
    }

    public ConfigurableRegistry() {
        super(RegConfigurable.class, LIUtils.REGISTER_TYPE_CONFIGURABLE);
        this.setLoadStage(LoadStage.PRE_INIT);
    }

    @Override
    public boolean registerClass(AnnotationData data) {
        Class<?> clazz = data.getTheClass();
        LIGeneralRegistry.loadConfigurableClass(getConfig(data.mod), clazz);
        return true;
    }

    @Override
    public boolean registerField(AnnotationData data) {
        return false;
    }
    
    private Map<RegModInformation, Configuration> configs = new HashMap();

    private Configuration getConfig(RegModInformation mod) {
        //How to find the Configuration:
        //First iterate all fields in mod class.
        //If there is a field with the type Configuration, return the value of this field.
        //When the field is null, throw an exception.
        //When the field is not found, also throw an exception.
        if (configs.containsKey(mod)) {
            return configs.get(mod);
        }
        Class<?> clazz = mod.getModInstance().getClass();
        for (Field f : clazz.getFields()) {
            if (f.getType() == Configuration.class) {
                Configuration config = null;
                try {
                    if (Modifier.isStatic(f.getModifiers())) {
                        config = (Configuration) f.get(null);
                    } else {
                        config = (Configuration) f.get(mod.getModInstance());
                    }
                } catch (Exception e) {}
                if (config == null) {
                    break;
                } else {
                    configs.put(mod, config);
                    return config;
                }
            }
        }
        throw new RuntimeException("Can not get config instance for mod " + mod.getModID() + ".");
    }
}