Fix #492

Related: 4d73187376

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

@@ -30,7 +30,7 @@ import java.util.Map;
  *
  * @author huangyuhui
  */
-@JsonAdapter(Argument.Serializer.class)
+@JsonAdapter(Argument.Deserializer.class)
 @Immutable
 public interface Argument extends Cloneable {
 
@@ -43,7 +43,7 @@ public interface Argument extends Cloneable {
      */
     List<String> toString(Map<String, String> keys, Map<String, Boolean> features);
 
-    class Serializer implements JsonDeserializer<Argument>, JsonSerializer<Argument> {
+    class Deserializer implements JsonDeserializer<Argument> {
         @Override
         public Argument deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
             if (json.isJsonPrimitive())
@@ -51,16 +51,5 @@ public interface Argument extends Cloneable {
             else
                 return context.deserialize(json, RuledArgument.class);
         }
-
-        @Override
-        public JsonElement serialize(Argument src, Type typeOfSrc, JsonSerializationContext context) {
-            if (src instanceof StringArgument)
-                return new JsonPrimitive(((StringArgument) src).getArgument());
-            else if (src instanceof RuledArgument)
-                return context.serialize(src, RuledArgument.class);
-            else
-                throw new AssertionError("Unrecognized argument type: " + src);
-        }
-
     }
 }

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

@@ -19,6 +19,13 @@ package org.jackhuang.hmcl.game;
 
 import org.jackhuang.hmcl.util.Immutable;
 
+import com.google.gson.JsonElement;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+import com.google.gson.annotations.JsonAdapter;
+
+import java.lang.reflect.Type;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
@@ -29,6 +36,7 @@ import java.util.regex.Pattern;
  *
  * @author huangyuhui
  */
+@JsonAdapter(StringArgument.Serializer.class)
 @Immutable
 public final class StringArgument implements Argument {
 
@@ -58,4 +66,11 @@ public final class StringArgument implements Argument {
     public String toString() {
         return argument;
     }
+
+    public class Serializer implements JsonSerializer<StringArgument> {
+        @Override
+        public JsonElement serialize(StringArgument src, Type typeOfSrc, JsonSerializationContext context) {
+            return new JsonPrimitive(src.getArgument());
+        }
+    }
 }