1 /** 2 * Copyright (c) 2008, SnakeYAML 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 package examples.resolver; 15 16 import java.util.regex.Pattern; 17 import org.yaml.snakeyaml.nodes.Tag; 18 import org.yaml.snakeyaml.resolver.Resolver; 19 20 public class JsonBooleanResolver extends Resolver { 21 22 public static final Pattern BOOL = Pattern.compile("^(?:true|false)$"); 23 24 /* 25 * resolve boolean for only 2 values: true and false 26 */ addImplicitResolvers()27 protected void addImplicitResolvers() { 28 addImplicitResolver(Tag.BOOL, BOOL, "tf"); 29 addImplicitResolver(Tag.FLOAT, FLOAT, "-+0123456789."); 30 // define simple int pattern 31 addImplicitResolver(Tag.INT, INT, "0123456789"); 32 addImplicitResolver(Tag.MERGE, MERGE, "<"); 33 addImplicitResolver(Tag.NULL, NULL, "~nN\0"); 34 addImplicitResolver(Tag.NULL, EMPTY, null); 35 addImplicitResolver(Tag.TIMESTAMP, TIMESTAMP, "0123456789"); 36 } 37 } 38