Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2012, 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 com.sun.tools.sjavac;

 import java.io.File;

 import java.util.HashMap;

 import java.util.HashSet;

 import java.util.Map;

 import java.util.Set;

 /**

  * The build state class captures the source code and generated artifacts

  * from a build. There are usually two build states, the previous one (prev),

  * loaded from the javac_state file, and the current one (now).

  *

  * <p><b>This is NOT part of any supported API.

  * If you write code that depends on this, you do so at your own

  * risk.  This code and its internal interfaces are subject to change

  * or deletion without notice.</b></p>

  */

 public class BuildState {

     private Map<String,Module> modules = new HashMap<String,Module>();

     private Map<String,Package> packages = new HashMap<String,Package>();

     private Map<String,Source> sources = new HashMap<String,Source>();

     private Map<String,File> artifacts = new HashMap<String,File>();

     // Map from package to a set of packages that depend on said package.

     private Map<String,Set<String>> dependents = new HashMap<String,Set<String>>();

     public  Map<String,Module> modules() { return modules; }

     public  Map<String,Package> packages() { return packages; }

     public  Map<String,Source> sources() { return sources; }

     public  Map<String,File> artifacts() { return artifacts; }

     public  Map<String,Set<String>> dependents() { return dependents; }

     /**

      * Lookup a module from a name. Create the module if it does

      * not exist yet.

      */

     public Module lookupModule(String mod) {

         Module m = modules.get(mod);

         if (m == null) {

             m = new Module(mod, "???");

             modules.put(mod, m);

         }

         return m;

     }

     /**

      * Find a module from a given package name. For example:

      * The package name "base:java.lang" will fetch the module named "base".

      * The package name ":java.net" will fetch the default module.

      */

     Module findModuleFromPackageName(String pkg) {

         int cp = pkg.indexOf(':');

         assert(cp != -1);

         String mod = pkg.substring(0, cp);

         return lookupModule(mod);

     }

     /**

      * Collect all packages, sources and artifacts for all modules

      * into the build state.

      *

      * @param m The set of modules.

      */

     public void collectPackagesSourcesAndArtifacts(Map<String,Module> m) {

         modules = m;

         // Extract all the found packages.

         for (Module i : modules.values()) {

             for (Map.Entry<String,Package> j : i.packages().entrySet()) {

                 Package p = packages.get(j.getKey());

                 // Check that no two different packages are stored under same name.

                 assert(p == null || p == j.getValue());

                 if (p == null) {

                     p = j.getValue();

                     packages.put(j.getKey(),j.getValue());

                 }

                 for (Map.Entry<String,Source> k : p.sources().entrySet()) {

                     Source s = sources.get(k.getKey());

                     // Check that no two different sources are stored under same name.

                     assert(s == null || s == k.getValue());

                     if (s == null) {

                         s = k.getValue();

                         sources.put(k.getKey(), k.getValue());

                     }

                 }

                 for (Map.Entry<String,File> g : p.artifacts().entrySet()) {

                     File f = artifacts.get(g.getKey());

                     // Check that no two artifacts are stored under the same file.

                     assert(f == null || f == g.getValue());

                     if (f == null) {

                         f = g.getValue();

                         artifacts.put(g.getKey(), g.getValue());

                     }

                 }

             }

         }

     }

     /**

      * Collect all the artifacts of all modules and packages.

      *

      * @param m The set of modules.

      */

     public void collectArtifacts(Map<String,Module> m) {

         modules = m;

         // Extract all the found packages.

         for (Module i : modules.values()) {

             for (Map.Entry<String,Package> j : i.packages().entrySet()) {

                 Package p = packages.get(j.getKey());

                 // Check that no two different packages are stored under same name.

                 assert(p == null || p == j.getValue());

                 p = j.getValue();

                 packages.put(j.getKey(),j.getValue());

                 for (Map.Entry<String,File> g : p.artifacts().entrySet()) {

                     File f = artifacts.get(g.getKey());

                     // Check that no two artifacts are stored under the same file.

                     assert(f == null || f == g.getValue());

                     artifacts.put(g.getKey(), g.getValue());

                 }

             }

         }

     }

     /**

      * Calculate the package dependents (ie the reverse of the dependencies).

      */

     public void calculateDependents() {

         dependents = new HashMap<String,Set<String>>();

         for (String s : packages.keySet()) {

             Package p = packages.get(s);

             for (String d : p.dependencies()) {

                 Set<String> ss = dependents.get(d);

                 if (ss == null) {

                     ss = new HashSet<String>();

                     dependents.put(d, ss);

                 }

                 // Add the dependent information to the global dependent map.

                 ss.add(s);

                 Package dp = packages.get(d);

                 // Also add the dependent information to the package specific map.

                 // Normally, you do not compile java.lang et al. Therefore

                 // there are several packages that p depends upon that you

                 // do not have in your state database. This is perfectly fine.

                 if (dp != null) {

                     // But this package did exist in the state database.

                     dp.addDependent(p.name());

                 }

             }

         }

     }

     /**

      * Verify that the setModules method above did the right thing when

      * running through the module->package->source structure.

      */

     public void checkInternalState(String msg, boolean linkedOnly, Map<String,Source> srcs) {

         boolean baad = false;

         Map<String,Source> original = new HashMap<String,Source>();

         Map<String,Source> calculated = new HashMap<String,Source>();

         for (String s : sources.keySet()) {

             Source ss = sources.get(s);

             if (ss.isLinkedOnly() == linkedOnly) {

                 calculated.put(s,ss);

             }

         }

         for (String s : srcs.keySet()) {

             Source ss = srcs.get(s);

             if (ss.isLinkedOnly() == linkedOnly) {

                 original.put(s,ss);

             }

         }

         if (original.size() != calculated.size()) {

             Log.error("INTERNAL ERROR "+msg+" original and calculated are not the same size!");

             baad = true;

         }

         if (!original.keySet().equals(calculated.keySet())) {

             Log.error("INTERNAL ERROR "+msg+" original and calculated do not have the same domain!");

             baad = true;

         }

         if (!baad) {

             for (String s : original.keySet()) {

                 Source s1 = original.get(s);

                 Source s2 = calculated.get(s);

                 if (s1 == null || s2 == null || !s1.equals(s2)) {

                     Log.error("INTERNAL ERROR "+msg+" original and calculated have differing elements for "+s);

                 }

                 baad = true;

             }

         }

         if (baad) {

             for (String s : original.keySet()) {

                 Source ss = original.get(s);

                 Source sss = calculated.get(s);

                 if (sss == null) {

                     Log.error("The file "+s+" does not exist in calculated tree of sources.");

                 }

             }

             for (String s : calculated.keySet()) {

                 Source ss = calculated.get(s);

                 Source sss = original.get(s);

                 if (sss == null) {

                     Log.error("The file "+s+" does not exist in original set of found sources.");

                 }

             }

         }

     }

     /**

      * Load a module from the javac state file.

      */

     public Module loadModule(String l) {

         Module m = Module.load(l);

         modules.put(m.name(), m);

         return m;

     }

     /**

      * Load a package from the javac state file.

      */

     public Package loadPackage(Module lastModule, String l) {

         Package p = Package.load(lastModule, l);

         lastModule.addPackage(p);

         packages.put(p.name(), p);

         return p;

     }

     /**

      * Load a source from the javac state file.

      */

     public Source loadSource(Package lastPackage, String l, boolean is_generated) {

         Source s = Source.load(lastPackage, l, is_generated);

         lastPackage.addSource(s);

         sources.put(s.name(), s);

         return s;

     }

     /**

      * During an incremental compile we need to copy the old javac state

      * information about packages that were not recompiled.

      */

     public void copyPackagesExcept(BuildState prev, Set<String> recompiled, Set<String> removed) {

         for (String pkg : prev.packages().keySet()) {

             // Do not copy recompiled or removed packages.

             if (recompiled.contains(pkg) || removed.contains(pkg)) continue;

             Module mnew = findModuleFromPackageName(pkg);

             Package pprev = prev.packages().get(pkg);

             mnew.addPackage(pprev);

         }

     }

 }