Update number type mapper

src/de/steamwar/command/SWCommandUtils.java

@@ -58,10 +58,10 @@ public class SWCommandUtils {
             if (s.equalsIgnoreCase("false")) return false;
             return null;
         }, s -> Arrays.asList("true", "false")));
-        addMapper(float.class, Float.class, createMapper(numberMapper(Float::parseFloat), numberCompleter(Float::parseFloat)));
-        addMapper(double.class, Double.class, createMapper(numberMapper(Double::parseDouble), numberCompleter(Double::parseDouble)));
-        addMapper(int.class, Integer.class, createMapper(numberMapper(Integer::parseInt), numberCompleter(Integer::parseInt)));
-        addMapper(long.class, Long.class, createMapper(numberMapper(Long::parseLong), numberCompleter(Long::parseLong)));
+        addMapper(float.class, Float.class, createMapper(numberMapper(Float::parseFloat), numberCompleter(Float::parseFloat, true)));
+        addMapper(double.class, Double.class, createMapper(numberMapper(Double::parseDouble), numberCompleter(Double::parseDouble, true)));
+        addMapper(int.class, Integer.class, createMapper(numberMapper(Integer::parseInt), numberCompleter(Integer::parseInt, false)));
+        addMapper(long.class, Long.class, createMapper(numberMapper(Long::parseLong), numberCompleter(Long::parseLong, false)));
         MAPPER_FUNCTIONS.put(String.class.getTypeName(), createMapper(s -> s, Collections::singletonList));
     }
 
@@ -255,10 +255,25 @@ public class SWCommandUtils {
         };
     }
 
-    private static Function<String, Collection<String>> numberCompleter(Function<String, ?> mapper) {
-        return s -> numberMapper(mapper).apply(s) != null
-                ? Collections.singletonList(s)
-                : Collections.emptyList();
+    private static Function<String, Collection<String>> numberCompleter(Function<String, ?> mapper, boolean comma) {
+        return s -> {
+            if (numberMapper(mapper).apply(s) == null) {
+                return Collections.emptyList();
+            }
+            List<String> strings = new ArrayList<>();
+            if (s.length() == 0) {
+                strings.add("-");
+            } else {
+                strings.add(s);
+            }
+            for (int i = 0; i < 10; i++) {
+                strings.add(s + i);
+            }
+            if (comma && (!s.contains(".") || !s.contains(","))) {
+                strings.add(s + ".");
+            }
+            return strings;
+        };
     }
 
     static <T extends Annotation> T[] getAnnotation(Method method, Class<T> annotation) {