diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/selectors/ResourceSelectorContainer.java')
-rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/selectors/ResourceSelectorContainer.java | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/selectors/ResourceSelectorContainer.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/selectors/ResourceSelectorContainer.java new file mode 100644 index 00000000..6b1c8002 --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/selectors/ResourceSelectorContainer.java @@ -0,0 +1,128 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (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.apache.org/licenses/LICENSE-2.0 + * + * 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 org.apache.tools.ant.types.resources.selectors; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.Iterator; +import java.util.List; +import java.util.Stack; + +import org.apache.tools.ant.BuildException; +import org.apache.tools.ant.Project; +import org.apache.tools.ant.types.DataType; + +/** + * ResourceSelector container. + * @since Ant 1.7 + */ +public class ResourceSelectorContainer extends DataType { + + private final List<ResourceSelector> resourceSelectors = new ArrayList<ResourceSelector>(); + + /** + * Default constructor. + */ + public ResourceSelectorContainer() { + } + + /** + * Construct a new ResourceSelectorContainer with the specified array of selectors. + * @param r the ResourceSelector[] to add. + */ + public ResourceSelectorContainer(ResourceSelector[] r) { + for (int i = 0; i < r.length; i++) { + add(r[i]); + } + } + + /** + * Add a ResourceSelector to the container. + * @param s the ResourceSelector to add. + */ + public void add(ResourceSelector s) { + if (isReference()) { + throw noChildrenAllowed(); + } + if (s == null) { + return; + } + resourceSelectors.add(s); + setChecked(false); + } + + /** + * Learn whether this ResourceSelectorContainer has selectors. + * @return boolean indicating whether selectors have been added to the container. + */ + public boolean hasSelectors() { + if (isReference()) { + return ((ResourceSelectorContainer) getCheckedRef()).hasSelectors(); + } + dieOnCircularReference(); + return !resourceSelectors.isEmpty(); + } + + /** + * Get the count of nested selectors. + * @return the selector count as int. + */ + public int selectorCount() { + if (isReference()) { + return ((ResourceSelectorContainer) getCheckedRef()).selectorCount(); + } + dieOnCircularReference(); + return resourceSelectors.size(); + } + + /** + * Return an Iterator over the nested selectors. + * @return Iterator of ResourceSelectors. + */ + public Iterator<ResourceSelector> getSelectors() { + if (isReference()) { + return ((ResourceSelectorContainer) getCheckedRef()).getSelectors(); + } + dieOnCircularReference(); + return Collections.unmodifiableList(resourceSelectors).iterator(); + } + + /** + * Overrides the version from DataType to recurse on nested ResourceSelectors. + * @param stk the Stack of references. + * @param p the Project to resolve against. + * @throws BuildException on error. + */ + protected void dieOnCircularReference(Stack<Object> stk, Project p) + throws BuildException { + if (isChecked()) { + return; + } + if (isReference()) { + super.dieOnCircularReference(stk, p); + } else { + for (ResourceSelector resourceSelector : resourceSelectors) { + if (resourceSelector instanceof DataType) { + pushAndInvokeCircularReferenceCheck((DataType) resourceSelector, stk, p); + } + } + setChecked(true); + } + } + +} |