package net.minecraftforge.common.util;
import java.lang.reflect.*;
import java.util.*;
import cpw.mods.fml.common.FMLLog;
import net.minecraft.block.BlockPressurePlate.Sensitivity;
import net.minecraft.block.material.Material;
import net.minecraft.enchantment.EnumEnchantmentType;
import net.minecraft.entity.Entity.EnumEntitySize;
import net.minecraft.entity.EnumCreatureAttribute;
import net.minecraft.entity.EnumCreatureType;
import net.minecraft.entity.item.EntityPainting.EnumArt;
import net.minecraft.entity.player.EntityPlayer.EnumStatus;
import net.minecraft.item.EnumAction;
import net.minecraft.item.EnumRarity;
import net.minecraft.item.Item.ToolMaterial;
import net.minecraft.item.ItemArmor.ArmorMaterial;
import net.minecraft.util.EnumChatFormatting;
import net.minecraft.util.MovingObjectPosition.MovingObjectType;
import net.minecraft.world.EnumSkyBlock;
import net.minecraft.world.gen.structure.StructureStrongholdPieces.Stronghold.Door;
import net.minecraftforge.classloading.FMLForgePlugin;
import net.minecraft.block.BlockPressurePlate.Sensitivity;
import net.minecraft.entity.Entity.EnumEntitySize;
import net.minecraft.entity.item.EntityPainting.EnumArt;
import net.minecraft.entity.player.EntityPlayer.EnumStatus;
import net.minecraft.item.Item.ToolMaterial;
import net.minecraft.item.ItemArmor.ArmorMaterial;
import net.minecraft.util.MovingObjectPosition.MovingObjectType;
import net.minecraft.world.gen.structure.StructureStrongholdPieces.Stronghold.Door;
public class EnumHelper
{
private static Object reflectionFactory = null;
private static Method newConstructorAccessor = null;
private static Method newInstance = null;
private static Method newFieldAccessor = null;
private static Method fieldAccessorSet = null;
private static boolean isSetup = false;
//Some enums are decompiled with extra arguments, so lets check for that
@SuppressWarnings("rawtypes")
private static Class[][] commonTypes =
{
{EnumAction.class},
{ArmorMaterial.class, int.class, int[].class, int.class},
{EnumArt.class, String.class, int.class, int.class, int.class, int.class},
{EnumCreatureAttribute.class},
{EnumCreatureType.class, Class.class, int.class, Material.class, boolean.class, boolean.class},
{Door.class},
{EnumEnchantmentType.class},
{EnumEntitySize.class},
{Sensitivity.class},
{MovingObjectType.class},
{EnumSkyBlock.class, int.class},
{EnumStatus.class},
{ToolMaterial.class, int.class, int.class, float.class, float.class, int.class},
{EnumRarity.class, EnumChatFormatting.class, String.class}
};
public static EnumAction addAction(String name)
{
return addEnum(EnumAction.class, name);
}
public static ArmorMaterial addArmorMaterial(String name, int durability, int[] reductionAmounts, int enchantability)
{
return addEnum(ArmorMaterial.class, name, durability, reductionAmounts, enchantability);
}
public static EnumArt addArt(String name, String tile, int sizeX, int sizeY, int offsetX, int offsetY)
{
return addEnum(EnumArt.class, name, tile, sizeX, sizeY, offsetX, offsetY);
}
public static EnumCreatureAttribute addCreatureAttribute(String name)
{
return addEnum(EnumCreatureAttribute.class, name);
}
@SuppressWarnings("rawtypes")
public static EnumCreatureType addCreatureType(String name, Class typeClass, int maxNumber, Material material, boolean peaceful, boolean animal)
{
return addEnum(EnumCreatureType.class, name, typeClass, maxNumber, material, peaceful, animal);
}
public static Door addDoor(String name)
{
return addEnum(Door.class, name);
}
public static EnumEnchantmentType addEnchantmentType(String name)
{
return addEnum(EnumEnchantmentType.class, name);
}
public static EnumEntitySize addEntitySize(String name)
{
return addEnum(EnumEntitySize.class, name);
}
public static Sensitivity addSensitivity(String name)
{
return addEnum(Sensitivity.class, name);
}
public static MovingObjectType addMovingObjectType(String name)
{
return addEnum(MovingObjectType.class, name);
}
public static EnumSkyBlock addSkyBlock(String name, int lightValue)
{
return addEnum(EnumSkyBlock.class, name, lightValue);
}
public static EnumStatus addStatus(String name)
{
return addEnum(EnumStatus.class, name);
}
public static ToolMaterial addToolMaterial(String name, int harvestLevel, int maxUses, float efficiency, float damage, int enchantability)
{
return addEnum(ToolMaterial.class, name, harvestLevel, maxUses, efficiency, damage, enchantability);
}
public static EnumRarity addRarity(String name, EnumChatFormatting color, String displayName)
{
return addEnum(EnumRarity.class, name, color, displayName);
}
private static void setup()
{
if (isSetup)
{
return;
}
try
{
Method getReflectionFactory = Class.forName("sun.reflect.ReflectionFactory").getDeclaredMethod("getReflectionFactory");
reflectionFactory = getReflectionFactory.invoke(null);
newConstructorAccessor = Class.forName("sun.reflect.ReflectionFactory").getDeclaredMethod("newConstructorAccessor", Constructor.class);
newInstance = Class.forName("sun.reflect.ConstructorAccessor").getDeclaredMethod("newInstance", Object[].class);
newFieldAccessor = Class.forName("sun.reflect.ReflectionFactory").getDeclaredMethod("newFieldAccessor", Field.class, boolean.class);
fieldAccessorSet = Class.forName("sun.reflect.FieldAccessor").getDeclaredMethod("set", Object.class, Object.class);
}
catch (Exception e)
{
e.printStackTrace();
}
isSetup = true;
}
/*
* Everything below this is found at the site below, and updated to be able to compile in Eclipse/Java 1.6+
* Also modified for use in decompiled code.
* Found at: http://niceideas.ch/roller2/badtrash/entry/java_create_enum_instances_dynamically
*/
private static Object getConstructorAccessor(Class<?> enumClass, Class<?>[] additionalParameterTypes) throws Exception
{
Class<?>[] parameterTypes = new Class[additionalParameterTypes.length + 2];
parameterTypes[0] = String.class;
parameterTypes[1] = int.class;
System.arraycopy(additionalParameterTypes, 0, parameterTypes, 2, additionalParameterTypes.length);
return newConstructorAccessor.invoke(reflectionFactory, enumClass.getDeclaredConstructor(parameterTypes));
}
private static < T extends Enum<? >> T makeEnum(Class<T> enumClass, String value, int ordinal, Class<?>[] additionalTypes, Object[] additionalValues) throws Exception
{
Object[] parms = new Object[additionalValues.length + 2];
parms[0] = value;
parms[1] = Integer.valueOf(ordinal);
System.arraycopy(additionalValues, 0, parms, 2, additionalValues.length);
return enumClass.cast(newInstance.invoke(getConstructorAccessor(enumClass, additionalTypes), new Object[] {parms}));
}
public static void setFailsafeFieldValue(Field field, Object target, Object value) throws Exception
{
field.setAccessible(true);
Field modifiersField = Field.class.getDeclaredField("modifiers");
modifiersField.setAccessible(true);
modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
Object fieldAccessor = newFieldAccessor.invoke(reflectionFactory, field, false);
fieldAccessorSet.invoke(fieldAccessor, target, value);
}
private static void blankField(Class<?> enumClass, String fieldName) throws Exception
{
for (Field field : Class.class.getDeclaredFields())
{
if (field.getName().contains(fieldName))
{
field.setAccessible(true);
setFailsafeFieldValue(field, enumClass, null);
break;
}
}
}
private static void cleanEnumCache(Class<?> enumClass) throws Exception
{
blankField(enumClass, "enumConstantDirectory");
blankField(enumClass, "enumConstants");
}
public static <T extends Enum<? >> T addEnum(Class<T> enumType, String enumName, Object... paramValues)
{
setup();
return addEnum(commonTypes, enumType, enumName, paramValues);
}
@SuppressWarnings("rawtypes")
public static <T extends Enum<? >> T addEnum(Class[][] map, Class<T> enumType, String enumName, Object... paramValues)
{
for (Class[] lookup : map)
{
if (lookup[0] == enumType)
{
Class<?>[] paramTypes = new Class<?>[lookup.length - 1];
if (paramTypes.length > 0)
{
System.arraycopy(lookup, 1, paramTypes, 0, paramTypes.length);
}
return addEnum(enumType, enumName, paramTypes, paramValues);
}
}
return null;
}
@SuppressWarnings("unchecked")
public static <T extends Enum<? >> T addEnum(Class<T> enumType, String enumName, Class<?>[] paramTypes, Object[] paramValues)
{
if (!isSetup)
{
setup();
}
Field valuesField = null;
Field[] fields = enumType.getDeclaredFields();
for (Field field : fields)
{
String name = field.getName();
if (name.equals("$VALUES") || name.equals("ENUM$VALUES")) //Added 'ENUM$VALUES' because Eclipse's internal compiler doesn't follow standards
{
valuesField = field;
break;
}
}
int flags = (FMLForgePlugin.RUNTIME_DEOBF ? Modifier.PUBLIC : Modifier.PRIVATE) | Modifier.STATIC | Modifier.FINAL | 0x1000 /*SYNTHETIC*/;
if (valuesField == null)
{
String valueType = String.format("[L%s;", enumType.getName().replace('.', '/'));
for (Field field : fields)
{
if ((field.getModifiers() & flags) == flags &&
field.getType().getName().replace('.', '/').equals(valueType)) //Apparently some JVMs return .'s and some don't..
{
valuesField = field;
break;
}
}
}
if (valuesField == null)
{
FMLLog.severe("Could not find $VALUES field for enum: %s", enumType.getName());
FMLLog.severe("Runtime Deobf: %s", FMLForgePlugin.RUNTIME_DEOBF);
FMLLog.severe("Flags: %s", String.format("%16s", Integer.toBinaryString(flags)).replace(' ', '0'));
FMLLog.severe("Fields:");
for (Field field : fields)
{
String mods = String.format("%16s", Integer.toBinaryString(field.getModifiers())).replace(' ', '0');
FMLLog.severe(" %s %s: %s", mods, field.getName(), field.getType().getName());
}
return null;
}
valuesField.setAccessible(true);
try
{
T[] previousValues = (T[])valuesField.get(enumType);
List<T> values = new ArrayList<T>(Arrays.asList(previousValues));
T newValue = (T)makeEnum(enumType, enumName, values.size(), paramTypes, paramValues);
values.add(newValue);
setFailsafeFieldValue(valuesField, null, values.toArray((T[]) Array.newInstance(enumType, 0)));
cleanEnumCache(enumType);
return newValue;
}
catch (Exception e)
{
e.printStackTrace();
throw new RuntimeException(e.getMessage(), e);
}
}
static
{
if (!isSetup)
{
setup();
}
}
}