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editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/yaml/SnakeYamlUtils.java

Index: editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/yaml/SnakeYamlUtils.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/yaml/SnakeYamlUtils.java	(revision 16570)
+++ editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/yaml/SnakeYamlUtils.java	(working copy)
@@ -1,143 +0,0 @@
-/*
- * Copyright (c) 2012, the Dart project authors.
- * 
- * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
- * in compliance with the License. You may obtain a copy of the License at
- * 
- * http://www.eclipse.org/legal/epl-v10.html
- * 
- * Unless required by applicable law or agreed to in writing, software distributed under the License
- * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
- * or implied. See the License for the specific language governing permissions and limitations under
- * the License.
- */
-package com.google.dart.tools.core.utilities.yaml;
-
-import com.google.dart.tools.core.DartCore;
-
-import org.yaml.snakeyaml.Yaml;
-import org.yaml.snakeyaml.constructor.Constructor;
-import org.yaml.snakeyaml.introspector.BeanAccess;
-import org.yaml.snakeyaml.introspector.Property;
-import org.yaml.snakeyaml.introspector.PropertyUtils;
-import org.yaml.snakeyaml.nodes.CollectionNode;
-import org.yaml.snakeyaml.nodes.MappingNode;
-import org.yaml.snakeyaml.nodes.Node;
-import org.yaml.snakeyaml.nodes.NodeTuple;
-import org.yaml.snakeyaml.nodes.SequenceNode;
-import org.yaml.snakeyaml.nodes.Tag;
-import org.yaml.snakeyaml.representer.Representer;
-
-import java.beans.IntrospectionException;
-import java.util.LinkedHashSet;
-import java.util.Map;
-import java.util.Set;
-
-/**
- * Utility class for using Snake YAML parser
- */
-public class SnakeYamlUtils {
-
-  /**
-   * To skip empty and null values in the {@link PubYamlObject} while writing out the yaml string
-   */
-  private static class SkipEmptyRepresenter extends Representer {
-    @Override
-    protected NodeTuple representJavaBeanProperty(Object javaBean, Property property,
-        Object propertyValue, Tag customTag) {
-      NodeTuple tuple = super.representJavaBeanProperty(
-          javaBean,
-          property,
-          propertyValue,
-          customTag);
-      Node valueNode = tuple.getValueNode();
-      if (Tag.NULL.equals(valueNode.getTag())) {
-        return null;// skip 'null' values
-      }
-      if (valueNode instanceof CollectionNode) {
-        if (Tag.SEQ.equals(valueNode.getTag())) {
-          SequenceNode seq = (SequenceNode) valueNode;
-          if (seq.getValue().isEmpty()) {
-            return null;// skip empty lists
-          }
-        }
-        if (Tag.MAP.equals(valueNode.getTag())) {
-          MappingNode seq = (MappingNode) valueNode;
-          if (seq.getValue().isEmpty()) {
-            return null;// skip empty maps
-          }
-        }
-      }
-      return tuple;
-    }
-  }
-
-  /**
-   * Class to preserve the order of fields as declared in {@link PubYamlObject} while writing out
-   * the yaml string
-   */
-  private static class UnsortedPropertyUtils extends PropertyUtils {
-    @Override
-    protected Set<Property> createPropertySet(Class<? extends Object> type, BeanAccess bAccess)
-        throws IntrospectionException {
-      Set<Property> result = new LinkedHashSet<Property>(
-          getPropertiesMap(type, BeanAccess.FIELD).values());
-      return result;
-    }
-  }
-
-  /**
-   * Return a yaml string for the given {@link PubYamlObject}
-   * 
-   * @param pubYamlObject bean for pubspec
-   * @return String
-   */
-  public static String buildYamlString(PubYamlObject pubYamlObject) {
-
-    try {
-      SkipEmptyRepresenter repr = new SkipEmptyRepresenter();
-      repr.setPropertyUtils(new UnsortedPropertyUtils());
-      Yaml yaml = new Yaml(repr);
-      String yamlString = yaml.dumpAsMap(pubYamlObject);
-      return yamlString;
-    } catch (Exception e) {
-      DartCore.logError(e);
-      return null;
-    }
-
-  }
-
-  /**
-   * Parse the pubspec.yaml string contents to an Map
-   */
-  @SuppressWarnings("unchecked")
-  public static Map<String, Object> parsePubspecYamlToMap(String contents) {
-    Yaml yaml = new Yaml();
-    try {
-      Map<String, Object> map = (Map<String, Object>) yaml.load(contents);
-      return map;
-    } catch (Exception e) {
-      DartCore.logError(e);
-      return null;
-    }
-
-  }
-
-  /**
-   * Parse the pubspec.yaml string contents to an {@link PubYamlObject}
-   */
-  public static PubYamlObject parsePubspecYamlToObject(String contents) {
-    PubYamlObject pubYamlObject = null;
-    Constructor constructor = new Constructor(PubYamlObject.class);
-    Yaml yaml = new Yaml(constructor);
-    try {
-      pubYamlObject = (PubYamlObject) yaml.load(contents);
-      return pubYamlObject;
-    } catch (Exception e) {
-      DartCore.logError(e);
-      return null;
-    }
-
-  }
-
-}