1 files changed, 144 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/depend/bcel/AncestorAnalyzer.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/depend/bcel/AncestorAnalyzer.java
new file mode 100644
index 00000000..2bd2a6cf
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/depend/bcel/AncestorAnalyzer.java
@@ -0,0 +1,144 @@
+/*
+ *  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.util.depend.bcel;
+import java.io.File;
+import java.io.IOException;
+import java.util.Enumeration;
+import java.util.Hashtable;
+import java.util.Vector;
+import org.apache.bcel.classfile.ClassParser;
+import org.apache.bcel.classfile.JavaClass;
+import org.apache.tools.ant.BuildException;
+import org.apache.tools.ant.util.depend.AbstractAnalyzer;
+
+/**
+ * A dependency analyzer which returns superclass and superinterface
+ * dependencies.
+ *
+ */
+public class AncestorAnalyzer extends AbstractAnalyzer {
+
+    /**
+     * Default constructor
+     *
+     * Causes the BCEL classes to load to ensure BCEL dependencies can
+     * be satisfied
+     */
+    public AncestorAnalyzer() {
+        // force BCEL classes to load now
+        try {
+            new ClassParser("force");
+        } catch (Exception e) {
+            // all released versions of BCEL may throw an IOException
+            // here, but BCEL's trunk does no longer declare to do so
+            if (!(e instanceof IOException)) {
+                throw new BuildException(e);
+            }
+            // ignore IOException like we've always done
+        }
+    }
+
+    /**
+     * Determine the dependencies of the configured root classes.
+     *
+     * @param files a vector to be populated with the files which contain
+     *      the dependency classes
+     * @param classes a vector to be populated with the names of the
+     *      dependency classes.
+     */
+    protected void determineDependencies(Vector<File> files, Vector<String> classes) {
+        // we get the root classes and build up a set of
+        // classes upon which they depend
+        Hashtable<String, String> dependencies = new Hashtable<String, String>();
+        Hashtable<File, File> containers = new Hashtable<File, File>();
+        Hashtable<String, String> toAnalyze = new Hashtable<String, String>();
+        Hashtable<String, String> nextAnalyze = new Hashtable<String, String>();
+
+        for (Enumeration<String> e = getRootClasses(); e.hasMoreElements();) {
+            String classname = e.nextElement();
+            toAnalyze.put(classname, classname);
+        }
+
+        int count = 0;
+        int maxCount = isClosureRequired() ? MAX_LOOPS : 2;
+        while (toAnalyze.size() != 0 && count++ < maxCount) {
+            nextAnalyze.clear();
+            for (String classname : toAnalyze.keySet()) {
+                dependencies.put(classname, classname);
+                try {
+                    File container = getClassContainer(classname);
+                    if (container == null) {
+                        continue;
+                    }
+                    containers.put(container, container);
+
+                    ClassParser parser = null;
+                    if (container.getName().endsWith(".class")) {
+                        parser = new ClassParser(container.getPath());
+                    } else {
+                        parser = new ClassParser(container.getPath(),
+                            classname.replace('.', '/') + ".class");
+                    }
+
+                    JavaClass javaClass = parser.parse();
+                    String[] interfaces = javaClass.getInterfaceNames();
+                    for (int i = 0; i < interfaces.length; ++i) {
+                        String interfaceName = interfaces[i];
+                        if (!dependencies.containsKey(interfaceName)) {
+                            nextAnalyze.put(interfaceName, interfaceName);
+                        }
+                    }
+
+                    if (javaClass.isClass()) {
+                        String superClass = javaClass.getSuperclassName();
+                        if (!dependencies.containsKey(superClass)) {
+                            nextAnalyze.put(superClass, superClass);
+                        }
+                    }
+                } catch (IOException ioe) {
+                    // ignore
+                }
+            }
+
+            Hashtable<String, String> temp = toAnalyze;
+            toAnalyze = nextAnalyze;
+            nextAnalyze = temp;
+        }
+
+        files.removeAllElements();
+        for (File f : containers.keySet()) {
+            files.add(f);
+        }
+
+        classes.removeAllElements();
+        for (String dependency : dependencies.keySet()) {
+            classes.add(dependency);
+        }
+    }
+
+    /**
+     * Indicate if this analyzer can determine dependent files.
+     *
+     * @return true if the analyzer provides dependency file information.
+     */
+    protected boolean supportsFileDependencies() {
+        return true;
+    }
+
+}
+