Prioritize long over double when reading JSON

Author: Jonathing

json-data-utils/src/main/java/net/minecraftforge/util/data/json/JsonData.java

@@ -8,7 +8,9 @@
 import com.google.gson.GsonBuilder;
 import com.google.gson.JsonIOException;
 import com.google.gson.JsonSyntaxException;
+import com.google.gson.ToNumberPolicy;
 import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
 
 import java.io.ByteArrayInputStream;
 import java.io.File;
@@ -21,9 +23,24 @@
 // TODO [MCMaven][Documentation] Document
 public class JsonData {
     private static final Gson GSON = new GsonBuilder()
+            .setObjectToNumberStrategy(JsonData::readNumber)
             .setPrettyPrinting()
             .create();
 
+    private static Number readNumber(JsonReader in) throws IOException {
+        try {
+            return ToNumberPolicy.LONG_OR_DOUBLE.readNumber(in);
+        } catch (Throwable suppressed) {
+            try {
+                return ToNumberPolicy.BIG_DECIMAL.readNumber(in);
+            } catch (Throwable e) {
+                IOException throwing = new IOException("Failed to read number from " + in, e);
+                throwing.addSuppressed(suppressed);
+                throw throwing;
+            }
+        }
+    }
+
     public static AssetsIndex assetsIndex(File file) {
         return fromJson(file, AssetsIndex.class);
     }