Allow ThingParsers to throw exceptions on invalid input instead of expecting them to return null.

This allows for a much more well-defined, fail-fast process, where a parser can abort on valid prefix but invalid input.

src/main/java/com/garbagemule/MobArena/MAUtils.java

@@ -74,12 +74,16 @@ public class MAUtils
 
             List<Thing> things = new ArrayList<>();
             for (String reward : rewards.split(",")) {
+                try {
                     Thing thing = plugin.getThingManager().parse(reward.trim());
                     if (thing == null) {
                         plugin.getLogger().warning("Failed to parse reward: " + reward.trim());
                     } else {
                         things.add(thing);
                     }
+                } catch (Exception e) {
+                    plugin.getLogger().severe("Exception parsing reward '" + reward.trim() + "': " + e.getLocalizedMessage());
+                }
             }
             result.put(wave, things);
         }

src/main/java/com/garbagemule/MobArena/things/MoneyThingParser.java

@@ -18,13 +18,7 @@ class MoneyThingParser implements ThingParser {
         if (money == null) {
             return null;
         }
-
-        Double value = valueOf(money);
-        if (value == null) {
-            return null;
-        }
-
-        return new MoneyThing(plugin, value);
+        return new MoneyThing(plugin, Double.parseDouble(money));
     }
 
     private String trimPrefix(String s) {
@@ -36,13 +30,4 @@ class MoneyThingParser implements ThingParser {
         }
         return null;
     }
-
-    private Double valueOf(String money) {
-        try {
-            return Double.parseDouble(money);
-        } catch (NumberFormatException e) {
-            plugin.getLogger().warning("Invalid economy value: " + money);
-            return null;
-        }
-    }
 }

src/main/java/com/garbagemule/MobArena/waves/WaveParser.java

@@ -307,11 +307,15 @@ public class WaveParser
         // Rewards!
         String rew = config.getString("reward");
         if (rew != null) {
-            Thing reward = arena.getPlugin().getThingManager().parse(rew);
-            if (reward == null) {
-                Bukkit.getLogger().warning("[MobArena] Failed to parse boss reward: " + rew);
+            try {
+                Thing thing = arena.getPlugin().getThingManager().parse(rew.trim());
+                if (thing == null) {
+                    arena.getPlugin().getLogger().warning("Failed to parse boss reward: " + rew.trim());
                 } else {
-                result.setReward(reward);
+                    result.setReward(thing);
+                }
+            } catch (Exception e) {
+                arena.getPlugin().getLogger().severe("Exception parsing boss reward '" + rew.trim() + "': " + e.getLocalizedMessage());
             }
         }