01 /*
02 * Copyright 2008-2014 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package griffon.core.formatters;
17
18 import javax.annotation.Nonnull;
19 import javax.annotation.Nullable;
20
21 import static java.util.Objects.requireNonNull;
22
23 /**
24 * @author Andres Almiray
25 * @since 2.0.0
26 */
27 public abstract class AbstractFormatter<T> implements Formatter<T> {
28 protected static int parseHexInt(@Nonnull String val, @Nonnull Class<?> klass) throws ParseException {
29 try {
30 return Integer.parseInt(String.valueOf(requireNonNull(val)).trim(), 16) & 0xFF;
31 } catch (NumberFormatException e) {
32 throw parseError(val, klass, e);
33 }
34 }
35
36 protected static int parseHexInt(@Nonnull Number val) {
37 return requireNonNull(val).intValue() & 0xFF;
38 }
39
40 protected static ParseException parseError(@Nullable Object value, @Nonnull Class<?> klass) throws ParseException {
41 throw new ParseException("Can't convert '" + value + "' into " + requireNonNull(klass).getName());
42 }
43
44 protected static ParseException parseError(@Nullable Object value, @Nonnull Class<?> klass, @Nonnull Exception e) throws ParseException {
45 throw new ParseException("Can't convert '" + value + "' into " + requireNonNull(klass).getName(), requireNonNull(e));
46 }
47 }
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