--- a/jdk/make/src/classes/build/tools/deps/CheckDeps.java Mon Jan 26 15:46:47 2015 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,226 +0,0 @@
-/*
- * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package build.tools.deps;
-
-import java.nio.file.DirectoryStream;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.nio.charset.StandardCharsets;
-import java.util.Set;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.HashMap;
-import java.util.Enumeration;
-import java.util.Properties;
-import java.util.jar.JarEntry;
-import java.util.jar.JarFile;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.net.URL;
-
-import com.sun.tools.classfile.ClassFile;
-import com.sun.tools.classfile.Dependencies;
-import com.sun.tools.classfile.Dependency;
-
-/**
- * A simple tool to check the JAR files in a JRE image to ensure that there
- * aren't any references to types that do not exist. The tool is intended to
- * be used in the JDK "profiles" build to help ensure that the profile
- * definitions are kept up to date.
- */
-
-public class CheckDeps {
-
- // classfile API for finding dependencies
- static final Dependency.Finder finder = Dependencies.getClassDependencyFinder();
-
- // "known types", found in rt.jar or other JAR files
- static final Set<String> knownTypes = new HashSet<>();
-
- // References to unknown types. The map key is the unknown type, the
- // map value is the set of classes that reference it.
- static final Map<String,Set<String>> unknownRefs = new HashMap<>();
-
- // The property name is the name of an unknown type that is allowed to be
- // references. The property value is a comma separated list of the types
- // that are allowed to reference it. The list also includes the names of
- // the profiles that the reference is allowed.
- static final Properties allowedBadRefs = new Properties();
-
- /**
- * Returns the class name for the given class file. In the case of inner
- * classes then the enclosing class is returned in order to keep the
- * rules simple.
- */
- static String toClassName(String s) {
- int i = s.indexOf('$');
- if (i > 0)
- s = s.substring(0, i);
- return s.replace("/", ".");
- }
-
- /**
- * Analyze the dependencies of all classes in the given JAR file. The
- * method updates knownTypes and unknownRefs as part of the analysis.
- */
- static void analyzeDependencies(Path jarpath) throws Exception {
- System.out.format("Analyzing %s%n", jarpath);
- try (JarFile jf = new JarFile(jarpath.toFile())) {
- Enumeration<JarEntry> entries = jf.entries();
- while (entries.hasMoreElements()) {
- JarEntry e = entries.nextElement();
- String name = e.getName();
- if (name.endsWith(".class")) {
- ClassFile cf = ClassFile.read(jf.getInputStream(e));
- for (Dependency d : finder.findDependencies(cf)) {
- String origin = toClassName(d.getOrigin().getName());
- String target = toClassName(d.getTarget().getName());
-
- // origin is now known
- unknownRefs.remove(origin);
- knownTypes.add(origin);
-
- // if the target is not known then record the reference
- if (!knownTypes.contains(target)) {
- Set<String> refs = unknownRefs.get(target);
- if (refs == null) {
- // first time seeing this unknown type
- refs = new HashSet<>();
- unknownRefs.put(target, refs);
- }
- refs.add(origin);
- }
- }
- }
- }
- }
- }
-
- /**
- * We have closure (no references to types that do not exist) if
- * unknownRefs is empty. When unknownRefs is not empty then it should
- * only contain references that are allowed to be present (these are
- * loaded from the refs.allowed properties file).
- *
- * @param the profile that is being tested, this determines the exceptions
- * in {@code allowedBadRefs} that apply.
- *
- * @return {@code true} if there are no missing types or the only references
- * to missing types are described by {@code allowedBadRefs}.
- */
- static boolean checkClosure(String profile) {
- // process the references to types that do not exist.
- boolean fail = false;
- for (Map.Entry<String,Set<String>> entry: unknownRefs.entrySet()) {
- String target = entry.getKey();
- for (String origin: entry.getValue()) {
- // check if origin -> target allowed
- String value = allowedBadRefs.getProperty(target);
- if (value == null) {
- System.err.format("%s -> %s (unknown type)%n", origin, target);
- fail = true;
- } else {
- // target is known, check if the origin is one that we
- // expect and that the exception applies to the profile.
- boolean found = false;
- boolean applicable = false;
- for (String s: value.split(",")) {
- s = s.trim();
- if (s.equals(origin))
- found = true;
- if (s.equals(profile))
- applicable = true;
- }
- if (!found || !applicable) {
- if (!found) {
- System.err.format("%s -> %s (not allowed)%n", origin, target);
- } else {
- System.err.format("%s -> %s (reference not applicable to %s)%n",
- origin, target, profile);
- }
- fail = true;
- }
- }
-
- }
- }
-
- return !fail;
- }
-
- static void fail(URL url) throws Exception {
- System.err.println("One or more unexpected references encountered");
- if (url != null)
- System.err.format("Check %s is up to date%n", Paths.get(url.toURI()));
- System.exit(-1);
- }
-
- public static void main(String[] args) throws Exception {
- // load properties file so that we know what missing types that are
- // allowed to be referenced.
- URL url = CheckDeps.class.getResource("refs.allowed");
- if (url != null) {
- try (InputStream in = url.openStream()) {
- allowedBadRefs.load(new InputStreamReader(in, StandardCharsets.UTF_8));
- }
- }
-
- if (args.length != 2) {
- System.err.println("Usage: java CheckDeps <image> <profile>");
- System.exit(-1);
- }
-
- String image = args[0];
- String profile = args[1];
-
- // process JAR files on boot class path
- Path lib = Paths.get(image, "lib");
- try (DirectoryStream<Path> stream = Files.newDirectoryStream(lib, "*.jar")) {
- for (Path jarpath: stream) {
- analyzeDependencies(jarpath);
- }
- }
-
- // classes on boot class path should not reference other types
- boolean okay = checkClosure(profile);
- if (!okay)
- fail(url);
-
- // process JAR files in the extensions directory
- try (DirectoryStream<Path> stream = Files.newDirectoryStream(lib.resolve("ext"), "*.jar")) {
- for (Path jarpath: stream) {
- analyzeDependencies(jarpath);
- }
- }
-
- // re-check to ensure that the extensions doesn't reference types that
- // do not exist.
- okay = checkClosure(profile);
- if (!okay)
- fail(url);
- }
-}