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Add gson type factory adapter to handled modded enums

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This commit is contained in:
OniBait 2013-11-13 01:40:01 -06:00
parent 5545965cdf
commit ee2c51f60a
2 changed files with 67 additions and 1 deletions
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4
src/com/massivecraft/mcore/MCore.java
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@ -16,6 +16,7 @@ import org.bukkit.inventory.PlayerInventory;
import com.massivecraft.mcore.adapter.InventoryAdapter;
import com.massivecraft.mcore.adapter.ItemStackAdapter;
import com.massivecraft.mcore.adapter.JsonElementAdapter;
import com.massivecraft.mcore.adapter.ModdedEnumTypeAdapter;
import com.massivecraft.mcore.adapter.ObjectIdAdapter;
import com.massivecraft.mcore.adapter.PlayerInventoryAdapter;
import com.massivecraft.mcore.adapter.UUIDAdapter;
@ -82,7 +83,8 @@ public class MCore extends MPlugin
.registerTypeAdapter(ItemStack.class, ItemStackAdapter.get())
.registerTypeAdapter(Inventory.class, InventoryAdapter.get())
.registerTypeAdapter(PlayerInventory.class, PlayerInventoryAdapter.get())
.registerTypeAdapter(PS.class, PSAdapter.get());
.registerTypeAdapter(PS.class, PSAdapter.get())
.registerTypeAdapterFactory(ModdedEnumTypeAdapter.ENUM_FACTORY);
}
public static String getServerId() { return ConfServer.serverid; }

64
src/com/massivecraft/mcore/adapter/ModdedEnumTypeAdapter.java Normal file
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@ -0,0 +1,64 @@
package com.massivecraft.mcore.adapter;
import com.massivecraft.mcore.xlib.gson.Gson;
import com.massivecraft.mcore.xlib.gson.TypeAdapter;
import com.massivecraft.mcore.xlib.gson.TypeAdapterFactory;
import com.massivecraft.mcore.xlib.gson.annotations.SerializedName;
import com.massivecraft.mcore.xlib.gson.reflect.TypeToken;
import com.massivecraft.mcore.xlib.gson.stream.JsonReader;
import com.massivecraft.mcore.xlib.gson.stream.JsonToken;
import com.massivecraft.mcore.xlib.gson.stream.JsonWriter;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
public final class ModdedEnumTypeAdapter<T extends Enum<T>> extends TypeAdapter<T> {
private final Map<String, T> nameToConstant = new HashMap<String, T>();
private final Map<T, String> constantToName = new HashMap<T, String>();
public ModdedEnumTypeAdapter(Class<T> classOfT) {
for (T constant : classOfT.getEnumConstants()) {
String name = constant.name();
// Ignore when the field can't be found since modified enums won't have it
// which is fine, since it wouldn't have an annotation anyway (how could it?)
try {
SerializedName annotation = classOfT.getField(name).getAnnotation(SerializedName.class);
if (annotation != null) {
name = annotation.value();
}
} catch (NoSuchFieldException ex) {}
nameToConstant.put(name, constant);
constantToName.put(constant, name);
}
}
public T read(JsonReader in) throws IOException {
if (in.peek() == JsonToken.NULL) {
in.nextNull();
return null;
}
return nameToConstant.get(in.nextString());
}
public void write(JsonWriter out, T value) throws IOException {
out.value(value == null ? null : constantToName.get(value));
}
public static final TypeAdapterFactory ENUM_FACTORY = newEnumTypeHierarchyFactory();
public static <TT> TypeAdapterFactory newEnumTypeHierarchyFactory() {
return new TypeAdapterFactory() {
@SuppressWarnings({"rawtypes", "unchecked"})
public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
Class<? super T> rawType = typeToken.getRawType();
if (!Enum.class.isAssignableFrom(rawType) || rawType == Enum.class) {
return null;
}
if (!rawType.isEnum()) {
rawType = rawType.getSuperclass(); // handle anonymous subclasses
}
return (TypeAdapter<T>) new ModdedEnumTypeAdapter(rawType);
}
};
}
}