Can has json version of a scarpet value

src/main/java/carpet/script/value/ListValue.java

@@ -2,6 +2,8 @@ package carpet.script.value;
 
 import carpet.script.LazyValue;
 import carpet.script.exception.InternalExpressionException;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.AbstractNumberTag;
 import net.minecraft.nbt.CompoundTag;
@@ -525,4 +527,13 @@ public class ListValue extends AbstractListValue implements ContainerValueInterf
         }
         return tag;
     }
+
+    @Override
+    public JsonElement toJson()
+    {
+        JsonArray array = new JsonArray();
+        for (Value el: items)
+            array.add(el.toJson());
+        return array;
+    }
 }

src/main/java/carpet/script/value/MapValue.java

@@ -1,6 +1,8 @@
 package carpet.script.value;
 
 import carpet.script.exception.InternalExpressionException;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.Tag;
 
@@ -256,4 +258,12 @@ public class MapValue extends AbstractListValue implements ContainerValueInterfa
         });
         return tag;
     }
+
+    @Override
+    public JsonElement toJson()
+    {
+        JsonObject jsonMap = new JsonObject();
+        map.forEach((k, v) -> jsonMap.add(k.getString(), v.toJson()));
+        return jsonMap;
+    }
 }

src/main/java/carpet/script/value/NullValue.java

@@ -1,5 +1,7 @@
 package carpet.script.value;
 
+import com.google.gson.JsonElement;
+import com.google.gson.JsonNull;
 import net.minecraft.nbt.StringTag;
 import net.minecraft.nbt.Tag;
 
@@ -60,4 +62,10 @@ public class NullValue extends NumericValue // TODO check nonsingleton code
         if (!force) throw new NBTSerializableValue.IncompatibleTypeException(this);
         return StringTag.of("null");
     }
+
+    @Override
+    public JsonElement toJson()
+    {
+        return JsonNull.INSTANCE;
+    }
 }

src/main/java/carpet/script/value/NumericValue.java

@@ -1,6 +1,8 @@
 package carpet.script.value;
 
 import carpet.script.exception.InternalExpressionException;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonPrimitive;
 import net.minecraft.nbt.DoubleTag;
 import net.minecraft.nbt.IntTag;
 import net.minecraft.nbt.LongTag;
@@ -235,11 +237,11 @@ public class NumericValue extends Value
     {
         if (longValue != null)
             return LongTag.of(longValue);
-        long longValue = getLong();
-        if (value == (double)longValue)
+        long lv = getLong();
+        if (value == (double)lv)
         {
             if (abs(value) < Integer.MAX_VALUE-2)
-                return IntTag.of((int)longValue);
+                return IntTag.of((int)lv);
             return LongTag.of(getLong());
         }
         else
@@ -247,4 +249,20 @@ public class NumericValue extends Value
             return DoubleTag.of(value);
         }
     }
+
+    @Override
+    public JsonElement toJson()
+    {
+        if (longValue != null)
+            return new JsonPrimitive(longValue);
+        long lv = getLong();
+        if (value == (double)lv)
+        {
+            return new JsonPrimitive(getLong());
+        }
+        else
+        {
+            return new JsonPrimitive(value);
+        }
+    }
 }

src/main/java/carpet/script/value/Value.java

@@ -1,6 +1,8 @@
 package carpet.script.value;
 
 import carpet.script.exception.InternalExpressionException;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonPrimitive;
 import net.minecraft.nbt.Tag;
 
 import java.util.regex.Matcher;
@@ -206,4 +208,9 @@ public abstract class Value implements Comparable<Value>, Cloneable
     }
 
     public abstract Tag toTag(boolean force);
+
+    public JsonElement toJson()
+    {
+        return new JsonPrimitive(getString());
+    }
 }