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package gregtech.api.recipe;
import java.util.HashSet;
import java.util.Set;
import javax.annotation.Nullable;
import javax.annotation.ParametersAreNonnullByDefault;
import org.jetbrains.annotations.Contract;
import gregtech.api.recipe.metadata.IRecipeMetadataStorage;
import gregtech.api.util.FieldsAreNonnullByDefault;
import gregtech.api.util.MethodsReturnNonnullByDefault;
import gregtech.nei.RecipeDisplayInfo;
/**
* Unique key for the {@link IRecipeMetadataStorage}. It's also responsible for drawing metadata info on NEI.
* <p>
* You can use {@link gregtech.api.recipe.metadata.SimpleRecipeMetadataKey} if your metadata does not need NEI handling.
*
* @param <T> Type of the metadata to use.
*/
@ParametersAreNonnullByDefault
@MethodsReturnNonnullByDefault
@FieldsAreNonnullByDefault
public abstract class RecipeMetadataKey<T> {
private static final Set<RecipeMetadataKey<?>> allIdentifiers = new HashSet<>();
private final Class<T> clazz;
private final String identifier;
protected RecipeMetadataKey(Class<T> clazz, String identifier) {
this.clazz = clazz;
this.identifier = identifier;
if (allIdentifiers.contains(this)) {
throw new IllegalArgumentException(
"Cannot register metadata key with exact same properties: " + identifier + "@" + clazz);
}
allIdentifiers.add(this);
}
/**
* Draws info about the metadata.
*
* @param recipeInfo Object to use for drawing text.
* @param value Metadata stored in the recipe. Can be safely {@link #cast}ed to the desired type.
*/
public abstract void drawInfo(RecipeDisplayInfo recipeInfo, @Nullable Object value);
@Nullable
public T cast(@Nullable Object o) {
return clazz.cast(o);
}
@Contract("_, !null -> !null")
@Nullable
public T cast(@Nullable Object o, @Nullable T defaultValue) {
T val = cast(o);
return val != null ? val : defaultValue;
}
@Override
public String toString() {
return "RecipeMetadataKey{" + "clazz=" + clazz.getName() + ", identifier=" + identifier + '\'' + '}';
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
RecipeMetadataKey<?> that = (RecipeMetadataKey<?>) o;
if (!clazz.equals(that.clazz)) return false;
return identifier.equals(that.identifier);
}
@Override
public int hashCode() {
int result = clazz.hashCode();
result = 31 * result + identifier.hashCode();
return result;
}
}
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