Use @JsonAdapter

HMCLCore/src/main/java/org/jackhuang/hmcl/game/Argument.java

@@ -18,6 +18,8 @@
 package org.jackhuang.hmcl.game;
 
 import com.google.gson.*;
+import com.google.gson.annotations.JsonAdapter;
+
 import org.jackhuang.hmcl.util.Immutable;
 
 import java.lang.reflect.Type;
@@ -28,6 +30,7 @@ import java.util.Map;
  *
  * @author huangyuhui
  */
+@JsonAdapter(Argument.Serializer.class)
 @Immutable
 public interface Argument extends Cloneable {
 
@@ -41,12 +44,6 @@ public interface Argument extends Cloneable {
     List<String> toString(Map<String, String> keys, Map<String, Boolean> features);
 
     class Serializer implements JsonDeserializer<Argument>, JsonSerializer<Argument> {
-
-        public static final Serializer INSTANCE = new Serializer();
-
-        private Serializer() {
-        }
-
         @Override
         public Argument deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
             if (json.isJsonPrimitive())

HMCLCore/src/main/java/org/jackhuang/hmcl/game/Library.java

@@ -18,6 +18,7 @@
 package org.jackhuang.hmcl.game;
 
 import com.google.gson.*;
+import com.google.gson.annotations.JsonAdapter;
 import com.google.gson.reflect.TypeToken;
 import org.jackhuang.hmcl.util.Constants;
 import org.jackhuang.hmcl.util.ToStringBuilder;
@@ -35,6 +36,7 @@ import java.util.Optional;
  *
  * @author huangyuhui
  */
+@JsonAdapter(Library.Serializer.class)
 public class Library implements Comparable<Library> {
 
     private final String groupId;
@@ -189,12 +191,6 @@ public class Library implements Comparable<Library> {
     }
 
     public static class Serializer implements JsonDeserializer<Library>, JsonSerializer<Library> {
-
-        public static final Serializer INSTANCE = new Serializer();
-
-        private Serializer() {
-        }
-
         @Override
         public Library deserialize(JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException {
             if (json == null || json == JsonNull.INSTANCE)

HMCLCore/src/main/java/org/jackhuang/hmcl/game/RuledArgument.java

@@ -18,6 +18,7 @@
 package org.jackhuang.hmcl.game;
 
 import com.google.gson.*;
+import com.google.gson.annotations.JsonAdapter;
 import com.google.gson.reflect.TypeToken;
 import org.jackhuang.hmcl.util.Immutable;
 
@@ -32,6 +33,7 @@ import java.util.stream.Collectors;
  *
  * @author huangyuhui
  */
+@JsonAdapter(RuledArgument.Serializer.class)
 @Immutable
 public class RuledArgument implements Argument {
 
@@ -74,12 +76,6 @@ public class RuledArgument implements Argument {
     }
 
     public static class Serializer implements JsonSerializer<RuledArgument>, JsonDeserializer<RuledArgument> {
-
-        public static final Serializer INSTANCE = new Serializer();
-
-        private Serializer() {
-        }
-
         @Override
         public JsonElement serialize(RuledArgument src, Type typeOfSrc, JsonSerializationContext context) {
             JsonObject obj = new JsonObject();

HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/JsonUtils.java

@@ -21,12 +21,6 @@ import java.io.File;
 import java.util.Date;
 import java.util.UUID;
 
-import org.jackhuang.hmcl.game.Argument;
-import org.jackhuang.hmcl.game.Library;
-import org.jackhuang.hmcl.game.RuledArgument;
-import org.jackhuang.hmcl.game.StringArgument;
-import org.jackhuang.hmcl.util.platform.Platform;
-
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.JsonParseException;
@@ -39,13 +33,8 @@ public final class JsonUtils {
     public static final Gson GSON = new GsonBuilder()
             .enableComplexMapKeySerialization()
             .setPrettyPrinting()
-            .registerTypeAdapter(Library.class, Library.Serializer.INSTANCE)
-            .registerTypeAdapter(Argument.class, Argument.Serializer.INSTANCE)
-            .registerTypeAdapter(StringArgument.class, Argument.Serializer.INSTANCE)
-            .registerTypeAdapter(RuledArgument.class, RuledArgument.Serializer.INSTANCE)
             .registerTypeAdapter(Date.class, DateTypeAdapter.INSTANCE)
             .registerTypeAdapter(UUID.class, UUIDTypeAdapter.INSTANCE)
-            .registerTypeAdapter(Platform.class, Platform.Serializer.INSTANCE)
             .registerTypeAdapter(File.class, FileTypeAdapter.INSTANCE)
             .registerTypeAdapterFactory(ValidationTypeAdapterFactory.INSTANCE)
             .registerTypeAdapterFactory(LowerCaseEnumTypeAdapterFactory.INSTANCE)

HMCLCore/src/main/java/org/jackhuang/hmcl/util/platform/Platform.java

@@ -18,6 +18,7 @@
 package org.jackhuang.hmcl.util.platform;
 
 import com.google.gson.*;
+import com.google.gson.annotations.JsonAdapter;
 
 import java.lang.reflect.Type;
 
@@ -27,6 +28,7 @@ import java.lang.reflect.Type;
  *
  * @author huangyuhui
  */
+@JsonAdapter(Platform.Serializer.class)
 public enum Platform {
     BIT_32("32"),
     BIT_64("64"),
@@ -56,12 +58,6 @@ public enum Platform {
      * The json serializer to {@link Platform}.
      */
     public static class Serializer implements JsonSerializer<Platform>, JsonDeserializer<Platform> {
-
-        public static final Serializer INSTANCE = new Serializer();
-
-        private Serializer() {
-        }
-
         @Override
         public JsonElement serialize(Platform t, Type type, JsonSerializationContext jsc) {
             if (t == null)