diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/condition/IsReference.java')
-rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/condition/IsReference.java | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/condition/IsReference.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/condition/IsReference.java new file mode 100644 index 00000000..f172849b --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/condition/IsReference.java @@ -0,0 +1,89 @@ +/* + * 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.taskdefs.condition; + +import org.apache.tools.ant.BuildException; +import org.apache.tools.ant.ProjectComponent; +import org.apache.tools.ant.types.Reference; + +/** + * Condition that tests whether a given reference has been defined. + * + * <p>Optionally tests whether it is of a given type/class.</p> + * + * @since Ant 1.6 + */ +public class IsReference extends ProjectComponent implements Condition { + private Reference ref; + private String type; + + /** + * Set the refid attribute. + * + * @param r a Reference value + */ + public void setRefid(Reference r) { + ref = r; + } + + /** + * Set the type attribute. This is optional attribute. + * + * @param type an ant component type name + */ + public void setType(String type) { + this.type = type; + } + + /** + * @return true if the reference exists and if type is set, if + * the reference is the same type + * @exception BuildException if an error occurs + */ + public boolean eval() throws BuildException { + if (ref == null) { + throw new BuildException("No reference specified for isreference " + + "condition"); + } + + String key = ref.getRefId(); + if (!getProject().hasReference(key)) { + return false; + } else if (type == null) { + return true; + } else { + Object o = getProject().getReference(key); + Class typeClass = + (Class) getProject().getDataTypeDefinitions().get(type); + + if (typeClass == null) { + typeClass = + (Class) getProject().getTaskDefinitions().get(type); + } + + if (typeClass == null) { + // don't know the type, should throw exception instead? + return false; + } + + return typeClass.isAssignableFrom(o.getClass()); + } + } + +} |