Get field type from its value

This commit is contained in:
Vankka 2024-06-29 14:06:17 +03:00
parent eb12d69efd
commit d70eddeec5
No known key found for this signature in database
GPG Key ID: 62E48025ED4E7EBB
5 changed files with 211 additions and 5 deletions

View File

@ -0,0 +1,203 @@
/*
* This file is part of DiscordSRV, licensed under the GPLv3 License
* Copyright (c) 2016-2024 Austin "Scarsz" Shapiro, Henri "Vankka" Schubin and DiscordSRV contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.discordsrv.common.config.configurate.fielddiscoverer;
import org.checkerframework.checker.nullness.qual.Nullable;
import org.spongepowered.configurate.objectmapping.ConfigSerializable;
import org.spongepowered.configurate.objectmapping.FieldDiscoverer;
import org.spongepowered.configurate.serialize.SerializationException;
import org.spongepowered.configurate.util.CheckedFunction;
import org.spongepowered.configurate.util.Types;
import java.lang.reflect.*;
import java.util.HashMap;
import java.util.Map;
import java.util.function.Supplier;
import static io.leangen.geantyref.GenericTypeReflector.*;
/*
* https://github.com/SpongePowered/Configurate/blob/c3d2105e0c03a0f6e0ae20ad74dbb4df9a83df36/core/src/main/java/org/spongepowered/configurate/objectmapping/ObjectFieldDiscoverer.java
* Identical except uses the type of the value instead of the fields type.
*
* Configurate
* Copyright (C) zml and Configurate contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
public class FieldValueDiscovererProxy implements FieldDiscoverer<Map<Field, Object>> {
public static final FieldValueDiscovererProxy EMPTY_CONSTRUCTOR_INSTANCE = new FieldValueDiscovererProxy(type -> {
try {
final Constructor<?> constructor;
constructor = erase(type.getType()).getDeclaredConstructor();
constructor.setAccessible(true);
return () -> {
try {
return constructor.newInstance();
} catch (final InstantiationException | IllegalAccessException | InvocationTargetException e) {
throw new RuntimeException(e);
}
};
} catch (final NoSuchMethodException e) {
return null;
}
}, "Objects must have a zero-argument constructor to be able to create new instances", false);
private final CheckedFunction<AnnotatedType, @Nullable Supplier<Object>, SerializationException> instanceFactory;
private final String instanceUnavailableErrorMessage;
private final boolean requiresInstanceCreation;
FieldValueDiscovererProxy(
final CheckedFunction<AnnotatedType, @Nullable Supplier<Object>, SerializationException> instanceFactory,
final @Nullable String instanceUnavailableErrorMessage,
final boolean requiresInstanceCreation
) {
this.instanceFactory = instanceFactory;
if (instanceUnavailableErrorMessage == null) {
this.instanceUnavailableErrorMessage = "Unable to create instances for this type!";
} else {
this.instanceUnavailableErrorMessage = instanceUnavailableErrorMessage;
}
this.requiresInstanceCreation = requiresInstanceCreation;
}
@Override
public <V> @Nullable InstanceFactory<Map<Field, Object>> discover(final AnnotatedType target,
final FieldCollector<Map<Field, Object>, V> collector) throws SerializationException {
final Class<?> clazz = erase(target.getType());
if (clazz.isInterface()) {
throw new SerializationException(target.getType(), "ObjectMapper can only work with concrete types");
}
final @Nullable Supplier<Object> maker = this.instanceFactory.apply(target);
if (maker == null && this.requiresInstanceCreation) {
return null;
}
Object instanceForCollection = maker != null ? maker.get() : null;
AnnotatedType collectType = target;
Class<?> collectClass = clazz;
while (true) {
collectFields(collectType, collector, instanceForCollection);
collectClass = collectClass.getSuperclass();
if (collectClass.equals(Object.class)) {
break;
}
collectType = getExactSuperType(collectType, collectClass);
}
return new MutableInstanceFactory<Map<Field, Object>>() {
@Override
public Map<Field, Object> begin() {
return new HashMap<>();
}
@Override
public void complete(final Object instance, final Map<Field, Object> intermediate) throws SerializationException {
for (final Map.Entry<Field, Object> entry : intermediate.entrySet()) {
try {
// Handle implicit field initialization by detecting any existing information in the object
if (entry.getValue() instanceof ImplicitProvider) {
final @Nullable Object implicit = ((ImplicitProvider) entry.getValue()).provider.get();
if (implicit != null) {
if (entry.getKey().get(instance) == null) {
entry.getKey().set(instance, implicit);
}
}
} else {
entry.getKey().set(instance, entry.getValue());
}
} catch (final IllegalAccessException e) {
throw new SerializationException(target.getType(), e);
}
}
}
@Override
public Object complete(final Map<Field, Object> intermediate) throws SerializationException {
final Object instance = maker == null ? null : maker.get();
if (instance == null) {
throw new SerializationException(target.getType(), instanceUnavailableErrorMessage);
}
complete(instance, intermediate);
return instance;
}
@Override
public boolean canCreateInstances() {
return maker != null;
}
};
}
private void collectFields(final AnnotatedType clazz, final FieldCollector<Map<Field, Object>, ?> fieldMaker, Object instanceForCollection) {
for (final Field field : erase(clazz.getType()).getDeclaredFields()) {
if ((field.getModifiers() & (Modifier.STATIC | Modifier.TRANSIENT)) != 0) {
continue;
}
field.setAccessible(true);
AnnotatedType fieldType = getFieldType(field, clazz);
try {
if (instanceForCollection != null) {
Object instance = field.get(instanceForCollection);
Class<?> type = instance != null ? instance.getClass() : null;
if (type != null && type.isAnnotationPresent(ConfigSerializable.class)) {
fieldType = annotate(type);
}
}
} catch (IllegalAccessException ignored) {}
fieldMaker.accept(field.getName(), fieldType, Types.combinedAnnotations(fieldType, field),
(intermediate, val, implicitProvider) -> {
if (val != null) {
intermediate.put(field, val);
} else {
intermediate.put(field, new ImplicitProvider(implicitProvider));
}
}, field::get);
}
}
static class ImplicitProvider {
final Supplier<Object> provider;
ImplicitProvider(final Supplier<Object> provider) {
this.provider = provider;
}
}
}

View File

@ -25,6 +25,7 @@ import com.discordsrv.common.DiscordSRV;
import com.discordsrv.common.config.configurate.annotation.Constants;
import com.discordsrv.common.config.configurate.annotation.DefaultOnly;
import com.discordsrv.common.config.configurate.annotation.Order;
import com.discordsrv.common.config.configurate.fielddiscoverer.FieldValueDiscovererProxy;
import com.discordsrv.common.config.configurate.fielddiscoverer.OrderedFieldDiscovererProxy;
import com.discordsrv.common.config.configurate.manager.loader.ConfigLoaderProvider;
import com.discordsrv.common.config.configurate.serializer.*;
@ -209,7 +210,7 @@ public abstract class ConfigurateConfigManager<T, LT extends AbstractConfigurati
return ObjectMapper.factoryBuilder()
.defaultNamingScheme(NAMING_SCHEME)
.addDiscoverer(new OrderedFieldDiscovererProxy<>((FieldDiscoverer<Object>) FieldDiscoverer.emptyConstructorObject(), fieldOrder))
.addDiscoverer(new OrderedFieldDiscovererProxy<>((FieldDiscoverer<Object>) (Object) FieldValueDiscovererProxy.EMPTY_CONSTRUCTOR_INSTANCE, fieldOrder))
.addDiscoverer(new OrderedFieldDiscovererProxy<>((FieldDiscoverer<Object>) FieldDiscoverer.record(), fieldOrder))
.addProcessor(Constants.Comment.class, (data, fieldType) -> (value, destination) -> {
// This needs to go before comment processing.

View File

@ -84,7 +84,7 @@ public abstract class MainConfig implements Config {
public PresenceUpdaterConfig presenceUpdater = defaultPresenceUpdater();
protected PresenceUpdaterConfig defaultPresenceUpdater() {
return new PresenceUpdaterConfig(); // TODO: fix overriding this not effecting the final config
return new PresenceUpdaterConfig();
}
public TimedUpdaterConfig timedUpdater = new TimedUpdaterConfig();

View File

@ -34,7 +34,7 @@ import java.util.Locale;
public class PresenceUpdaterConfig {
@Comment("The amount of seconds between presence updates\n"
+ "Minimum value: %1s")
+ "Minimum value: %1")
@Constants.Comment("30")
public int updaterRateInSeconds = 90;

View File

@ -59,7 +59,8 @@ public class TimedUpdaterConfig {
@Comment("The format for the channel name(s), placeholders are supported.")
public String nameFormat = "";
@Comment("The time between updates in minutes. The minimum time is %1 minutes.")
@Comment("The time between updates in minutes.\n"
+ "Minimum value: %1")
@Constants.Comment(intValue = MINIMUM_MINUTES)
public int timeMinutes = MINIMUM_MINUTES;
@ -95,7 +96,8 @@ public class TimedUpdaterConfig {
+ "If this is blank, the topic will not be updated")
public String topicFormat = "";
@Comment("The time between updates in minutes. The minimum time is %1 minutes.")
@Comment("The time between updates in minutes.\n"
+ "Minimum value: %1")
@Constants.Comment(intValue = MINIMUM_MINUTES)
public int timeMinutes = MINIMUM_MINUTES;