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GsonComponentSerializerImpl.java
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GsonComponentSerializerImpl.java
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/*
* This file is part of adventure, licensed under the MIT License.
*
* Copyright (c) 2017-2021 KyoriPowered
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package net.kyori.adventure.text.serializer.gson;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import java.util.Optional;
import java.util.function.Consumer;
import java.util.function.UnaryOperator;
import net.kyori.adventure.key.Key;
import net.kyori.adventure.text.BlockNBTComponent;
import net.kyori.adventure.text.Component;
import net.kyori.adventure.text.event.ClickEvent;
import net.kyori.adventure.text.event.HoverEvent;
import net.kyori.adventure.text.format.Style;
import net.kyori.adventure.text.format.TextColor;
import net.kyori.adventure.text.format.TextDecoration;
import net.kyori.adventure.util.Services;
import org.checkerframework.checker.nullness.qual.NonNull;
import org.checkerframework.checker.nullness.qual.Nullable;
final class GsonComponentSerializerImpl implements GsonComponentSerializer {
private static final Optional<Provider> SERVICE = Services.service(Provider.class);
static final Consumer<Builder> BUILDER = SERVICE
.map(Provider::builder)
.orElseGet(() -> builder -> {
// NOOP
});
// We cannot store these fields in GsonComponentSerializerImpl directly due to class initialisation issues.
static final class Instances {
static final GsonComponentSerializer INSTANCE = SERVICE
.map(Provider::gson)
.orElseGet(() -> new GsonComponentSerializerImpl(false, null, false));
static final GsonComponentSerializer LEGACY_INSTANCE = SERVICE
.map(Provider::gsonLegacy)
.orElseGet(() -> new GsonComponentSerializerImpl(true, null, true));
}
private final Gson serializer;
private final UnaryOperator<GsonBuilder> populator;
private final boolean downsampleColor;
private final @Nullable LegacyHoverEventSerializer legacyHoverSerializer;
private final boolean emitLegacyHover;
GsonComponentSerializerImpl(final boolean downsampleColor, final @Nullable LegacyHoverEventSerializer legacyHoverSerializer, final boolean emitLegacyHover) {
this.downsampleColor = downsampleColor;
this.legacyHoverSerializer = legacyHoverSerializer;
this.emitLegacyHover = emitLegacyHover;
this.populator = builder -> {
builder.registerTypeHierarchyAdapter(Key.class, KeySerializer.INSTANCE);
builder.registerTypeHierarchyAdapter(Component.class, new ComponentSerializerImpl());
builder.registerTypeHierarchyAdapter(Style.class, new StyleSerializer(legacyHoverSerializer, emitLegacyHover));
builder.registerTypeAdapter(ClickEvent.Action.class, IndexedSerializer.of("click action", ClickEvent.Action.NAMES));
builder.registerTypeAdapter(HoverEvent.Action.class, IndexedSerializer.of("hover action", HoverEvent.Action.NAMES));
builder.registerTypeAdapter(HoverEvent.ShowItem.class, new ShowItemSerializer());
builder.registerTypeAdapter(HoverEvent.ShowEntity.class, new ShowEntitySerializer());
builder.registerTypeAdapter(TextColorWrapper.class, new TextColorWrapper.Serializer());
builder.registerTypeHierarchyAdapter(TextColor.class, downsampleColor ? TextColorSerializer.DOWNSAMPLE_COLOR : TextColorSerializer.INSTANCE);
builder.registerTypeAdapter(TextDecoration.class, IndexedSerializer.of("text decoration", TextDecoration.NAMES));
builder.registerTypeHierarchyAdapter(BlockNBTComponent.Pos.class, BlockNBTComponentPosSerializer.INSTANCE);
return builder;
};
this.serializer = this.populator.apply(new GsonBuilder()).create();
}
@Override
public @NonNull Gson serializer() {
return this.serializer;
}
@Override
public @NonNull UnaryOperator<GsonBuilder> populator() {
return this.populator;
}
@Override
public @NonNull Component deserialize(final @NonNull String string) {
final Component component = this.serializer().fromJson(string, Component.class);
if(component == null) throw ComponentSerializerImpl.notSureHowToDeserialize(string);
return component;
}
@Override
public @NonNull String serialize(final @NonNull Component component) {
return this.serializer().toJson(component);
}
@Override
public @NonNull Component deserializeFromTree(final @NonNull JsonElement input) {
final Component component = this.serializer().fromJson(input, Component.class);
if(component == null) throw ComponentSerializerImpl.notSureHowToDeserialize(input);
return component;
}
@Override
public @NonNull JsonElement serializeToTree(final @NonNull Component component) {
return this.serializer().toJsonTree(component);
}
@Override
public @NonNull Builder toBuilder() {
return new BuilderImpl(this);
}
static final class BuilderImpl implements Builder {
private boolean downsampleColor = false;
private @Nullable LegacyHoverEventSerializer legacyHoverSerializer;
private boolean emitLegacyHover = false;
BuilderImpl() {
BUILDER.accept(this); // let service provider touch the builder before anybody else touches it
}
BuilderImpl(final GsonComponentSerializerImpl serializer) {
this();
this.downsampleColor = serializer.downsampleColor;
this.emitLegacyHover = serializer.emitLegacyHover;
this.legacyHoverSerializer = serializer.legacyHoverSerializer;
}
@Override
public @NonNull Builder downsampleColors() {
this.downsampleColor = true;
return this;
}
@Override
public @NonNull Builder legacyHoverEventSerializer(final @Nullable LegacyHoverEventSerializer serializer) {
this.legacyHoverSerializer = serializer;
return this;
}
@Override
public @NonNull Builder emitLegacyHoverEvent() {
this.emitLegacyHover = true;
return this;
}
@Override
public @NonNull GsonComponentSerializer build() {
if(this.legacyHoverSerializer == null) {
return this.downsampleColor ? Instances.LEGACY_INSTANCE : Instances.INSTANCE;
} else {
return new GsonComponentSerializerImpl(this.downsampleColor, this.legacyHoverSerializer, this.emitLegacyHover);
}
}
}
}