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1   /**
2    * Copyright (c) 2008-2012, http://www.snakeyaml.org
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
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 examples.resolver;
17  
18  import java.util.regex.Pattern;
19  
20  import org.yaml.snakeyaml.nodes.Tag;
21  import org.yaml.snakeyaml.resolver.Resolver;
22  
23  public class CustomIntResolver extends Resolver {
24      public static final Pattern PURE_INT = Pattern.compile("^[0-9]+$");
25  
26      /*
27       * do not resolve int if it has underscores
28       */
29      protected void addImplicitResolvers() {
30          addImplicitResolver(Tag.BOOL, BOOL, "yYnNtTfFoO");
31          addImplicitResolver(Tag.FLOAT, FLOAT, "-+0123456789.");
32          // define simple int pattern
33          addImplicitResolver(Tag.INT, PURE_INT, "0123456789");
34          addImplicitResolver(Tag.MERGE, MERGE, "<");
35          addImplicitResolver(Tag.NULL, NULL, "~nN\0");
36          addImplicitResolver(Tag.NULL, EMPTY, null);
37          addImplicitResolver(Tag.TIMESTAMP, TIMESTAMP, "0123456789");
38          addImplicitResolver(Tag.VALUE, VALUE, "=");
39      }
40  }