ohrstrom@1504: /*
ohrstrom@1504:  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
ohrstrom@1504:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohrstrom@1504:  *
ohrstrom@1504:  * This code is free software; you can redistribute it and/or modify it
ohrstrom@1504:  * under the terms of the GNU General Public License version 2 only, as
ohrstrom@1504:  * published by the Free Software Foundation.  Oracle designates this
ohrstrom@1504:  * particular file as subject to the "Classpath" exception as provided
ohrstrom@1504:  * by Oracle in the LICENSE file that accompanied this code.
ohrstrom@1504:  *
ohrstrom@1504:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohrstrom@1504:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohrstrom@1504:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohrstrom@1504:  * version 2 for more details (a copy is included in the LICENSE file that
ohrstrom@1504:  * accompanied this code).
ohrstrom@1504:  *
ohrstrom@1504:  * You should have received a copy of the GNU General Public License version
ohrstrom@1504:  * 2 along with this work; if not, write to the Free Software Foundation,
ohrstrom@1504:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohrstrom@1504:  *
ohrstrom@1504:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohrstrom@1504:  * or visit www.oracle.com if you need additional information or have any
ohrstrom@1504:  * questions.
ohrstrom@1504:  */
ohrstrom@1504: 
ohrstrom@1504: package com.sun.tools.sjavac;
ohrstrom@1504: 
ohrstrom@1504: import java.io.*;
ohrstrom@1504: import java.util.Collections;
ohrstrom@1504: import java.util.Date;
ohrstrom@1504: import java.util.Set;
ohrstrom@1504: import java.util.HashSet;
ohrstrom@1504: import java.util.List;
ohrstrom@1504: import java.util.Map;
ohrstrom@1504: import java.util.HashMap;
ohrstrom@1504: import java.text.SimpleDateFormat;
ohrstrom@1504: import java.net.URI;
ohrstrom@1504: import java.util.*;
ohrstrom@1504: 
ohrstrom@1504: /**
ohrstrom@1504:  * The javac state class maintains the previous (prev) and the current (now)
ohrstrom@1504:  * build states and everything else that goes into the javac_state file.
ohrstrom@1504:  *
ohrstrom@1504:  * <p><b>This is NOT part of any supported API.
ohrstrom@1504:  * If you write code that depends on this, you do so at your own
ohrstrom@1504:  * risk.  This code and its internal interfaces are subject to change
ohrstrom@1504:  * or deletion without notice.</b></p>
ohrstrom@1504:  */
ohrstrom@1504: public class JavacState
ohrstrom@1504: {
ohrstrom@1504:     // The arguments to the compile. If not identical, then it cannot
ohrstrom@1504:     // be an incremental build!
ohrstrom@1504:     String theArgs;
ohrstrom@1504:     // The number of cores limits how many threads are used for heavy concurrent work.
ohrstrom@1504:     int numCores;
ohrstrom@1504: 
ohrstrom@1504:     // The bin_dir/javac_state
ohrstrom@1504:     private String javacStateFilename;
ohrstrom@1504:     private File javacState;
ohrstrom@1504: 
ohrstrom@1504:     // The previous build state is loaded from javac_state
ohrstrom@1504:     private BuildState prev;
ohrstrom@1504:     // The current build state is constructed during the build,
ohrstrom@1504:     // then saved as the new javac_state.
ohrstrom@1504:     private BuildState now;
ohrstrom@1504: 
ohrstrom@1504:     // Something has changed in the javac_state. It needs to be saved!
ohrstrom@1504:     private boolean needsSaving;
ohrstrom@1504:     // If this is a new javac_state file, then do not print unnecessary messages.
ohrstrom@1504:     private boolean newJavacState;
ohrstrom@1504: 
ohrstrom@1504:     // These are packages where something has changed and the package
ohrstrom@1504:     // needs to be recompiled. Actions that trigger recompilation:
ohrstrom@1504:     // * source belonging to the package has changed
ohrstrom@1504:     // * artifact belonging to the package is lost, or its timestamp has been changed.
ohrstrom@1504:     // * an unknown artifact has appeared, we simply delete it, but we also trigger a recompilation.
ohrstrom@1504:     // * a package that is tainted, taints all packages that depend on it.
ohrstrom@1504:     private Set<String> taintedPackages;
ohrstrom@1504:     // After a compile, the pubapis are compared with the pubapis stored in the javac state file.
ohrstrom@1504:     // Any packages where the pubapi differ are added to this set.
ohrstrom@1504:     // Later we use this set and the dependency information to taint dependent packages.
ohrstrom@1504:     private Set<String> packagesWithChangedPublicApis;
ohrstrom@1504:     // When a module-info.java file is changed, taint the module,
ohrstrom@1504:     // then taint all modules that depend on that that module.
ohrstrom@1504:     // A module dependency can occur directly through a require, or
ohrstrom@1504:     // indirectly through a module that does a public export for the first tainted module.
ohrstrom@1504:     // When all modules are tainted, then taint all packages belonging to these modules.
ohrstrom@1504:     // Then rebuild. It is perhaps possible (and valuable?) to do a more finegrained examination of the
ohrstrom@1504:     // change in module-info.java, but that will have to wait.
ohrstrom@1504:     private Set<String> taintedModules;
ohrstrom@1504:     // The set of all packages that has been recompiled.
ohrstrom@1504:     // Copy over the javac_state for the packages that did not need recompilation,
ohrstrom@1504:     // verbatim from the previous (prev) to the new (now) build state.
ohrstrom@1504:     private Set<String> recompiledPackages;
ohrstrom@1504: 
ohrstrom@1504:     // The output directories filled with tasty artifacts.
ohrstrom@1504:     private File binDir, gensrcDir, headerDir;
ohrstrom@1504: 
ohrstrom@1504:     // The current status of the file system.
ohrstrom@1504:     private Set<File> binArtifacts;
ohrstrom@1504:     private Set<File> gensrcArtifacts;
ohrstrom@1504:     private Set<File> headerArtifacts;
ohrstrom@1504: 
ohrstrom@1504:     // The status of the sources.
ohrstrom@1504:     Set<Source> removedSources = null;
ohrstrom@1504:     Set<Source> addedSources = null;
ohrstrom@1504:     Set<Source> modifiedSources = null;
ohrstrom@1504: 
ohrstrom@1504:     // Visible sources for linking. These are the only
ohrstrom@1504:     // ones that -sourcepath is allowed to see.
ohrstrom@1504:     Set<URI> visibleSrcs;
ohrstrom@1504: 
ohrstrom@1504:     // Visible classes for linking. These are the only
ohrstrom@1504:     // ones that -classpath is allowed to see.
ohrstrom@1504:     // It maps from a classpath root to the set of visible classes for that root.
ohrstrom@1504:     // If the set is empty, then all classes are visible for that root.
ohrstrom@1504:     // It can also map from a jar file to the set of visible classes for that jar file.
ohrstrom@1504:     Map<URI,Set<String>> visibleClasses;
ohrstrom@1504: 
ohrstrom@1504:     // Setup two transforms that always exist.
ohrstrom@1504:     private CopyFile            copyFiles = new CopyFile();
ohrstrom@1504:     private CompileJavaPackages compileJavaPackages = new CompileJavaPackages();
ohrstrom@1504: 
ohrstrom@1504:     // Where to send stdout and stderr.
ohrstrom@1504:     private PrintStream out, err;
ohrstrom@1504: 
ohrstrom@1504:     JavacState(String[] args, File bd, File gd, File hd, boolean permitUnidentifiedArtifacts, boolean removeJavacState,
ohrstrom@1504:             PrintStream o, PrintStream e) {
ohrstrom@1504:         out = o;
ohrstrom@1504:         err = e;
ohrstrom@1504:         numCores = Main.findNumberOption(args, "-j");
ohrstrom@1504:         theArgs = "";
ohrstrom@1504:         for (String a : removeArgsNotAffectingState(args)) {
ohrstrom@1504:             theArgs = theArgs+a+" ";
ohrstrom@1504:         }
ohrstrom@1504:         binDir = bd;
ohrstrom@1504:         gensrcDir = gd;
ohrstrom@1504:         headerDir = hd;
ohrstrom@1504:         javacStateFilename = binDir.getPath()+File.separator+"javac_state";
ohrstrom@1504:         javacState = new File(javacStateFilename);
ohrstrom@1504:         if (removeJavacState && javacState.exists()) {
ohrstrom@1504:             javacState.delete();
ohrstrom@1504:         }
ohrstrom@1504:         newJavacState = false;
ohrstrom@1504:         if (!javacState.exists()) {
ohrstrom@1504:             newJavacState = true;
ohrstrom@1504:             // If there is no javac_state then delete the contents of all the artifact dirs!
ohrstrom@1504:             // We do not want to risk building a broken incremental build.
ohrstrom@1504:             // BUT since the makefiles still copy things straight into the bin_dir et al,
ohrstrom@1504:             // we avoid deleting files here, if the option --permit-unidentified-classes was supplied.
ohrstrom@1504:             if (!permitUnidentifiedArtifacts) {
ohrstrom@1504:                 deleteContents(binDir);
ohrstrom@1504:                 deleteContents(gensrcDir);
ohrstrom@1504:                 deleteContents(headerDir);
ohrstrom@1504:             }
ohrstrom@1504:             needsSaving = true;
ohrstrom@1504:         }
ohrstrom@1504:         prev = new BuildState();
ohrstrom@1504:         now = new BuildState();
ohrstrom@1504:         taintedPackages = new HashSet<String>();
ohrstrom@1504:         recompiledPackages = new HashSet<String>();
ohrstrom@1504:         packagesWithChangedPublicApis = new HashSet<String>();
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     public BuildState prev() { return prev; }
ohrstrom@1504:     public BuildState now() { return now; }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Remove args not affecting the state.
ohrstrom@1504:      */
ohrstrom@1504:     static String[] removeArgsNotAffectingState(String[] args) {
ohrstrom@1504:         String[] out = new String[args.length];
ohrstrom@1504:         int j = 0;
ohrstrom@1504:         for (int i = 0; i<args.length; ++i) {
ohrstrom@1504:             if (args[i].equals("-j")) {
ohrstrom@1504:                 // Just skip it and skip following value
ohrstrom@1504:                 i++;
ohrstrom@1504:             } else if (args[i].startsWith("--server:")) {
ohrstrom@1504:                 // Just skip it.
ohrstrom@1504:             } else if (args[i].startsWith("--log=")) {
ohrstrom@1504:                 // Just skip it.
ohrstrom@1504:             } else if (args[i].equals("--compare-found-sources")) {
ohrstrom@1504:                 // Just skip it and skip verify file name
ohrstrom@1504:                 i++;
ohrstrom@1504:             } else {
ohrstrom@1504:                 // Copy argument.
ohrstrom@1504:                 out[j] = args[i];
ohrstrom@1504:                 j++;
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:         String[] ret = new String[j];
ohrstrom@1504:         System.arraycopy(out, 0, ret, 0, j);
ohrstrom@1504:         return ret;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Specify which sources are visible to the compiler through -sourcepath.
ohrstrom@1504:      */
ohrstrom@1504:     public void setVisibleSources(Map<String,Source> vs) {
ohrstrom@1504:         visibleSrcs = new HashSet<URI>();
ohrstrom@1504:         for (String s : vs.keySet()) {
ohrstrom@1504:             Source src = vs.get(s);
ohrstrom@1504:             visibleSrcs.add(src.file().toURI());
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Specify which classes are visible to the compiler through -classpath.
ohrstrom@1504:      */
ohrstrom@1504:     public void setVisibleClasses(Map<String,Source> vs) {
ohrstrom@1504:         visibleSrcs = new HashSet<URI>();
ohrstrom@1504:         for (String s : vs.keySet()) {
ohrstrom@1504:             Source src = vs.get(s);
ohrstrom@1504:             visibleSrcs.add(src.file().toURI());
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504:     /**
ohrstrom@1504:      * Returns true if this is an incremental build.
ohrstrom@1504:      */
ohrstrom@1504:     public boolean isIncremental() {
ohrstrom@1504:         return !prev.sources().isEmpty();
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Find all artifacts that exists on disk.
ohrstrom@1504:      */
ohrstrom@1504:     public void findAllArtifacts() {
ohrstrom@1504:         binArtifacts = findAllFiles(binDir);
ohrstrom@1504:         gensrcArtifacts = findAllFiles(gensrcDir);
ohrstrom@1504:         headerArtifacts = findAllFiles(headerDir);
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Lookup the artifacts generated for this package in the previous build.
ohrstrom@1504:      */
ohrstrom@1504:     private Map<String,File> fetchPrevArtifacts(String pkg) {
ohrstrom@1504:         Package p = prev.packages().get(pkg);
ohrstrom@1504:         if (p != null) {
ohrstrom@1504:             return p.artifacts();
ohrstrom@1504:         }
ohrstrom@1504:         return new HashMap<String,File>();
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Delete all prev artifacts in the currently tainted packages.
ohrstrom@1504:      */
ohrstrom@1504:     public void deleteClassArtifactsInTaintedPackages() {
ohrstrom@1504:         for (String pkg : taintedPackages) {
ohrstrom@1504:             Map<String,File> arts = fetchPrevArtifacts(pkg);
ohrstrom@1504:             for (File f : arts.values()) {
ohrstrom@1504:                 if (f.exists() && f.getName().endsWith(".class")) {
ohrstrom@1504:                     f.delete();
ohrstrom@1504:                 }
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Mark the javac_state file to be in need of saving and as a side effect,
ohrstrom@1504:      * it gets a new timestamp.
ohrstrom@1504:      */
ohrstrom@1504:     private void needsSaving() {
ohrstrom@1504:         needsSaving = true;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Save the javac_state file.
ohrstrom@1504:      */
ohrstrom@1504:     public void save() throws IOException {
ohrstrom@1504:         if (!needsSaving) return;
ohrstrom@1504:         try (FileWriter out = new FileWriter(javacStateFilename)) {
ohrstrom@1504:             StringBuilder b = new StringBuilder();
ohrstrom@1504:             long millisNow = System.currentTimeMillis();
ohrstrom@1504:             Date d = new Date(millisNow);
ohrstrom@1504:             SimpleDateFormat df =
ohrstrom@1504:                 new SimpleDateFormat("yyyy-MM-dd HH:mm:ss SSS");
ohrstrom@1504:             b.append("# javac_state ver 0.3 generated "+millisNow+" "+df.format(d)+"\n");
ohrstrom@1504:             b.append("# This format might change at any time. Please do not depend on it.\n");
ohrstrom@1504:             b.append("# M module\n");
ohrstrom@1504:             b.append("# P package\n");
ohrstrom@1504:             b.append("# S C source_tobe_compiled timestamp\n");
ohrstrom@1504:             b.append("# S L link_only_source timestamp\n");
ohrstrom@1504:             b.append("# G C generated_source timestamp\n");
ohrstrom@1504:             b.append("# A artifact timestamp\n");
ohrstrom@1504:             b.append("# D dependency\n");
ohrstrom@1504:             b.append("# I pubapi\n");
ohrstrom@1504:             b.append("# R arguments\n");
ohrstrom@1504:             b.append("R ").append(theArgs).append("\n");
ohrstrom@1504: 
ohrstrom@1504:             // Copy over the javac_state for the packages that did not need recompilation.
ohrstrom@1504:             now.copyPackagesExcept(prev, recompiledPackages, new HashSet<String>());
ohrstrom@1504:             // Save the packages, ie package names, dependencies, pubapis and artifacts!
ohrstrom@1504:             // I.e. the lot.
ohrstrom@1504:             Module.saveModules(now.modules(), b);
ohrstrom@1504: 
ohrstrom@1504:             String s = b.toString();
ohrstrom@1504:             out.write(s, 0, s.length());
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Load a javac_state file.
ohrstrom@1504:      */
ohrstrom@1504:     public static JavacState load(String[] args, File binDir, File gensrcDir, File headerDir,
ohrstrom@1504:             boolean permitUnidentifiedArtifacts, PrintStream out, PrintStream err) {
ohrstrom@1504:         JavacState db = new JavacState(args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, false, out, err);
ohrstrom@1504:         Module  lastModule = null;
ohrstrom@1504:         Package lastPackage = null;
ohrstrom@1504:         Source  lastSource = null;
ohrstrom@1504:         boolean noFileFound = false;
ohrstrom@1504:         boolean foundCorrectVerNr = false;
ohrstrom@1504:         boolean newCommandLine = false;
ohrstrom@1504:         boolean syntaxError = false;
ohrstrom@1504: 
ohrstrom@1504:         try (BufferedReader in = new BufferedReader(new FileReader(db.javacStateFilename))) {
ohrstrom@1504:             for (;;) {
ohrstrom@1504:                 String l = in.readLine();
ohrstrom@1504:                 if (l==null) break;
ohrstrom@1504:                 if (l.length()>=3 && l.charAt(1) == ' ') {
ohrstrom@1504:                     char c = l.charAt(0);
ohrstrom@1504:                     if (c == 'M') {
ohrstrom@1504:                         lastModule = db.prev.loadModule(l);
ohrstrom@1504:                     } else
ohrstrom@1504:                     if (c == 'P') {
ohrstrom@1504:                         if (lastModule == null) { syntaxError = true; break; }
ohrstrom@1504:                         lastPackage = db.prev.loadPackage(lastModule, l);
ohrstrom@1504:                     } else
ohrstrom@1504:                     if (c == 'D') {
ohrstrom@1504:                         if (lastModule == null || lastPackage == null) { syntaxError = true; break; }
ohrstrom@1504:                         lastPackage.loadDependency(l);
ohrstrom@1504:                     } else
ohrstrom@1504:                     if (c == 'I') {
ohrstrom@1504:                         if (lastModule == null || lastPackage == null) { syntaxError = true; break; }
ohrstrom@1504:                         lastPackage.loadPubapi(l);
ohrstrom@1504:                     } else
ohrstrom@1504:                     if (c == 'A') {
ohrstrom@1504:                         if (lastModule == null || lastPackage == null) { syntaxError = true; break; }
ohrstrom@1504:                         lastPackage.loadArtifact(l);
ohrstrom@1504:                     } else
ohrstrom@1504:                     if (c == 'S') {
ohrstrom@1504:                         if (lastModule == null || lastPackage == null) { syntaxError = true; break; }
ohrstrom@1504:                         lastSource = db.prev.loadSource(lastPackage, l, false);
ohrstrom@1504:                     } else
ohrstrom@1504:                     if (c == 'G') {
ohrstrom@1504:                         if (lastModule == null || lastPackage == null) { syntaxError = true; break; }
ohrstrom@1504:                         lastSource = db.prev.loadSource(lastPackage, l, true);
ohrstrom@1504:                     } else
ohrstrom@1504:                     if (c == 'R') {
ohrstrom@1504:                         String ncmdl = "R "+db.theArgs;
ohrstrom@1504:                         if (!l.equals(ncmdl)) {
ohrstrom@1504:                             newCommandLine = true;
ohrstrom@1504:                         }
ohrstrom@1504:                     } else
ohrstrom@1504:                          if (c == '#') {
ohrstrom@1504:                         if (l.startsWith("# javac_state ver ")) {
ohrstrom@1504:                             int sp = l.indexOf(" ", 18);
ohrstrom@1504:                             if (sp != -1) {
ohrstrom@1504:                                 String ver = l.substring(18,sp);
ohrstrom@1504:                                 if (!ver.equals("0.3")) {
ohrstrom@1504:                     break;
ohrstrom@1504:                                  }
ohrstrom@1504:                 foundCorrectVerNr = true;
ohrstrom@1504:                             }
ohrstrom@1504:                         }
ohrstrom@1504:                     }
ohrstrom@1504:                 }
ohrstrom@1504:             }
ohrstrom@1504:         } catch (FileNotFoundException e) {
ohrstrom@1504:             // Silently create a new javac_state file.
ohrstrom@1504:             noFileFound = true;
ohrstrom@1504:         } catch (IOException e) {
ohrstrom@1504:             Log.info("Dropping old javac_state because of errors when reading it.");
ohrstrom@1504:             db = new JavacState(args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
ohrstrom@1504:             foundCorrectVerNr = true;
ohrstrom@1504:             newCommandLine = false;
ohrstrom@1504:             syntaxError = false;
ohrstrom@1504:     }
ohrstrom@1504:         if (foundCorrectVerNr == false && !noFileFound) {
ohrstrom@1504:             Log.info("Dropping old javac_state since it is of an old version.");
ohrstrom@1504:             db = new JavacState(args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
ohrstrom@1504:         } else
ohrstrom@1504:         if (newCommandLine == true && !noFileFound) {
ohrstrom@1504:             Log.info("Dropping old javac_state since a new command line is used!");
ohrstrom@1504:             db = new JavacState(args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
ohrstrom@1504:         } else
ohrstrom@1504:         if (syntaxError == true) {
ohrstrom@1504:             Log.info("Dropping old javac_state since it contains syntax errors.");
ohrstrom@1504:             db = new JavacState(args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
ohrstrom@1504:         }
ohrstrom@1504:         db.prev.calculateDependents();
ohrstrom@1504:         return db;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Mark a java package as tainted, ie it needs recompilation.
ohrstrom@1504:      */
ohrstrom@1504:     public void taintPackage(String name, String because) {
ohrstrom@1504:         if (!taintedPackages.contains(name)) {
ohrstrom@1504:             if (because != null) Log.debug("Tainting "+Util.justPackageName(name)+" because "+because);
ohrstrom@1504:             // It has not been tainted before.
ohrstrom@1504:             taintedPackages.add(name);
ohrstrom@1504:             needsSaving();
ohrstrom@1504:             Package nowp = now.packages().get(name);
ohrstrom@1504:             if (nowp != null) {
ohrstrom@1504:                 for (String d : nowp.dependents()) {
ohrstrom@1504:                     taintPackage(d, because);
ohrstrom@1504:                 }
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * This packages need recompilation.
ohrstrom@1504:      */
ohrstrom@1504:     public Set<String> taintedPackages() {
ohrstrom@1504:         return taintedPackages;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Clean out the tainted package set, used after the first round of compiles,
ohrstrom@1504:      * prior to propagating dependencies.
ohrstrom@1504:      */
ohrstrom@1504:     public void clearTaintedPackages() {
ohrstrom@1504:         taintedPackages = new HashSet<String>();
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Go through all sources and check which have been removed, added or modified
ohrstrom@1504:      * and taint the corresponding packages.
ohrstrom@1504:      */
ohrstrom@1504:     public void checkSourceStatus(boolean check_gensrc) {
ohrstrom@1504:         removedSources = calculateRemovedSources();
ohrstrom@1504:         for (Source s : removedSources) {
ohrstrom@1504:             if (!s.isGenerated() || check_gensrc) {
ohrstrom@1504:                 taintPackage(s.pkg().name(), "source "+s.name()+" was removed");
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504: 
ohrstrom@1504:         addedSources = calculateAddedSources();
ohrstrom@1504:         for (Source s : addedSources) {
ohrstrom@1504:             String msg = null;
ohrstrom@1504:             if (isIncremental()) {
ohrstrom@1504:                 // When building from scratch, there is no point
ohrstrom@1504:                 // printing "was added" for every file since all files are added.
ohrstrom@1504:                 // However for an incremental build it makes sense.
ohrstrom@1504:                 msg = "source "+s.name()+" was added";
ohrstrom@1504:             }
ohrstrom@1504:             if (!s.isGenerated() || check_gensrc) {
ohrstrom@1504:                 taintPackage(s.pkg().name(), msg);
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504: 
ohrstrom@1504:         modifiedSources = calculateModifiedSources();
ohrstrom@1504:         for (Source s : modifiedSources) {
ohrstrom@1504:             if (!s.isGenerated() || check_gensrc) {
ohrstrom@1504:                 taintPackage(s.pkg().name(), "source "+s.name()+" was modified");
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Acquire the compile_java_packages suffix rule for .java files.
ohrstrom@1504:      */
ohrstrom@1504:     public Map<String,Transformer> getJavaSuffixRule() {
ohrstrom@1504:         Map<String,Transformer> sr = new HashMap<String,Transformer>();
ohrstrom@1504:         sr.put(".java", compileJavaPackages);
ohrstrom@1504:         return sr;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Acquire the copying transform.
ohrstrom@1504:      */
ohrstrom@1504:     public Transformer getCopier() {
ohrstrom@1504:         return copyFiles;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * If artifacts have gone missing, force a recompile of the packages
ohrstrom@1504:      * they belong to.
ohrstrom@1504:      */
ohrstrom@1504:     public void taintPackagesThatMissArtifacts() {
ohrstrom@1504:         for (Package pkg : prev.packages().values()) {
ohrstrom@1504:             for (File f : pkg.artifacts().values()) {
ohrstrom@1504:                 if (!f.exists()) {
ohrstrom@1504:                     // Hmm, the artifact on disk does not exist! Someone has removed it....
ohrstrom@1504:                     // Lets rebuild the package.
ohrstrom@1504:                     taintPackage(pkg.name(), ""+f+" is missing.");
ohrstrom@1504:                 }
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Propagate recompilation through the dependency chains.
ohrstrom@1504:      * Avoid re-tainting packages that have already been compiled.
ohrstrom@1504:      */
ohrstrom@1504:     public void taintPackagesDependingOnChangedPackages(Set<String> pkgs, Set<String> recentlyCompiled) {
ohrstrom@1504:         for (Package pkg : prev.packages().values()) {
ohrstrom@1504:             for (String dep : pkg.dependencies()) {
ohrstrom@1504:                 if (pkgs.contains(dep) && !recentlyCompiled.contains(pkg.name())) {
ohrstrom@1504:                     taintPackage(pkg.name(), " its depending on "+dep);
ohrstrom@1504:                 }
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Scan all output dirs for artifacts and remove those files (artifacts?)
ohrstrom@1504:      * that are not recognized as such, in the javac_state file.
ohrstrom@1504:      */
ohrstrom@1504:     public void removeUnidentifiedArtifacts() {
ohrstrom@1504:         Set<File> allKnownArtifacts = new HashSet<File>();
ohrstrom@1504:         for (Package pkg : prev.packages().values()) {
ohrstrom@1504:             for (File f : pkg.artifacts().values()) {
ohrstrom@1504:                 allKnownArtifacts.add(f);
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:         // Do not forget about javac_state....
ohrstrom@1504:         allKnownArtifacts.add(javacState);
ohrstrom@1504: 
ohrstrom@1504:         for (File f : binArtifacts) {
ohrstrom@1504:             if (!allKnownArtifacts.contains(f)) {
ohrstrom@1504:                 Log.debug("Removing "+f.getPath()+" since it is unknown to the javac_state.");
ohrstrom@1504:                 f.delete();
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:         for (File f : headerArtifacts) {
ohrstrom@1504:             if (!allKnownArtifacts.contains(f)) {
ohrstrom@1504:                 Log.debug("Removing "+f.getPath()+" since it is unknown to the javac_state.");
ohrstrom@1504:                 f.delete();
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:         for (File f : gensrcArtifacts) {
ohrstrom@1504:             if (!allKnownArtifacts.contains(f)) {
ohrstrom@1504:                 Log.debug("Removing "+f.getPath()+" since it is unknown to the javac_state.");
ohrstrom@1504:                 f.delete();
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Remove artifacts that are no longer produced when compiling!
ohrstrom@1504:      */
ohrstrom@1504:     public void removeSuperfluousArtifacts(Set<String> recentlyCompiled) {
ohrstrom@1504:         // Nothing to do, if nothing was recompiled.
ohrstrom@1504:         if (recentlyCompiled.size() == 0) return;
ohrstrom@1504: 
ohrstrom@1504:         for (String pkg : now.packages().keySet()) {
ohrstrom@1504:             // If this package has not been recompiled, skip the check.
ohrstrom@1504:             if (!recentlyCompiled.contains(pkg)) continue;
ohrstrom@1504:             Collection<File> arts = now.artifacts().values();
ohrstrom@1504:             for (File f : fetchPrevArtifacts(pkg).values()) {
ohrstrom@1504:                 if (!arts.contains(f)) {
ohrstrom@1504:                     Log.debug("Removing "+f.getPath()+" since it is now superfluous!");
ohrstrom@1504:                     if (f.exists()) f.delete();
ohrstrom@1504:                 }
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Return those files belonging to prev, but not now.
ohrstrom@1504:      */
ohrstrom@1504:     private Set<Source> calculateRemovedSources() {
ohrstrom@1504:         Set<Source> removed = new HashSet<Source>();
ohrstrom@1504:         for (String src : prev.sources().keySet()) {
ohrstrom@1504:             if (now.sources().get(src) == null) {
ohrstrom@1504:                 removed.add(prev.sources().get(src));
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:         return removed;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Return those files belonging to now, but not prev.
ohrstrom@1504:      */
ohrstrom@1504:     private Set<Source> calculateAddedSources() {
ohrstrom@1504:         Set<Source> added = new HashSet<Source>();
ohrstrom@1504:         for (String src : now.sources().keySet()) {
ohrstrom@1504:             if (prev.sources().get(src) == null) {
ohrstrom@1504:                 added.add(now.sources().get(src));
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:         return added;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Return those files where the timestamp is newer.
ohrstrom@1504:      * If a source file timestamp suddenly is older than what is known
ohrstrom@1504:      * about it in javac_state, then consider it modified, but print
ohrstrom@1504:      * a warning!
ohrstrom@1504:      */
ohrstrom@1504:     private Set<Source> calculateModifiedSources() {
ohrstrom@1504:         Set<Source> modified = new HashSet<Source>();
ohrstrom@1504:         for (String src : now.sources().keySet()) {
ohrstrom@1504:             Source n = now.sources().get(src);
ohrstrom@1504:             Source t = prev.sources().get(src);
ohrstrom@1504:             if (prev.sources().get(src) != null) {
ohrstrom@1504:                 if (t != null) {
ohrstrom@1504:                     if (n.lastModified() > t.lastModified()) {
ohrstrom@1504:                         modified.add(n);
ohrstrom@1504:                     } else if (n.lastModified() < t.lastModified()) {
ohrstrom@1504:                         modified.add(n);
ohrstrom@1504:                         Log.warn("The source file "+n.name()+" timestamp has moved backwards in time.");
ohrstrom@1504:                     }
ohrstrom@1504:                 }
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:         return modified;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Recursively delete a directory and all its contents.
ohrstrom@1504:      */
ohrstrom@1504:     private static void deleteContents(File dir) {
ohrstrom@1504:         if (dir != null && dir.exists()) {
ohrstrom@1504:             for (File f : dir.listFiles()) {
ohrstrom@1504:                 if (f.isDirectory()) {
ohrstrom@1504:                     deleteContents(f);
ohrstrom@1504:                 }
ohrstrom@1504:                 f.delete();
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Run the copy translator only.
ohrstrom@1504:      */
ohrstrom@1504:     public void performCopying(File binDir, Map<String,Transformer> suffixRules) {
ohrstrom@1504:         Map<String,Transformer> sr = new HashMap<String,Transformer>();
ohrstrom@1504:         for (Map.Entry<String,Transformer> e : suffixRules.entrySet()) {
ohrstrom@1504:             if (e.getValue() == copyFiles) {
ohrstrom@1504:                 sr.put(e.getKey(), e.getValue());
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:         perform(binDir, sr);
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Run all the translators that translate into java source code.
ohrstrom@1504:      * I.e. all translators that are not copy nor compile_java_source.
ohrstrom@1504:      */
ohrstrom@1504:     public void performTranslation(File gensrcDir, Map<String,Transformer> suffixRules) {
ohrstrom@1504:         Map<String,Transformer> sr = new HashMap<String,Transformer>();
ohrstrom@1504:         for (Map.Entry<String,Transformer> e : suffixRules.entrySet()) {
ohrstrom@1504:             if (e.getValue() != copyFiles &&
ohrstrom@1504:                 e.getValue() != compileJavaPackages) {
ohrstrom@1504:                 sr.put(e.getKey(), e.getValue());
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:         perform(gensrcDir, sr);
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Compile all the java sources. Return true, if it needs to be called again!
ohrstrom@1504:      */
ohrstrom@1504:     public boolean performJavaCompilations(File binDir,
ohrstrom@1504:                                            String serverSettings,
ohrstrom@1504:                                            String[] args,
ohrstrom@1504:                                            Set<String> recentlyCompiled,
ohrstrom@1504:                                            boolean[] rcValue) {
ohrstrom@1504:         Map<String,Transformer> suffixRules = new HashMap<String,Transformer>();
ohrstrom@1504:         suffixRules.put(".java", compileJavaPackages);
ohrstrom@1504:         compileJavaPackages.setExtra(serverSettings);
ohrstrom@1504:         compileJavaPackages.setExtra(args);
ohrstrom@1504: 
ohrstrom@1504:         rcValue[0] = perform(binDir, suffixRules);
ohrstrom@1504:         recentlyCompiled.addAll(taintedPackages());
ohrstrom@1504:         clearTaintedPackages();
ohrstrom@1504:         boolean again = !packagesWithChangedPublicApis.isEmpty();
ohrstrom@1504:         taintPackagesDependingOnChangedPackages(packagesWithChangedPublicApis, recentlyCompiled);
ohrstrom@1504:         packagesWithChangedPublicApis = new HashSet<String>();
ohrstrom@1504:         return again && rcValue[0];
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Store the source into the set of sources belonging to the given transform.
ohrstrom@1504:      */
ohrstrom@1504:     private void addFileToTransform(Map<Transformer,Map<String,Set<URI>>> gs, Transformer t, Source s) {
ohrstrom@1504:         Map<String,Set<URI>> fs = gs.get(t);
ohrstrom@1504:         if (fs == null) {
ohrstrom@1504:             fs = new HashMap<String,Set<URI>>();
ohrstrom@1504:             gs.put(t, fs);
ohrstrom@1504:         }
ohrstrom@1504:         Set<URI> ss = fs.get(s.pkg().name());
ohrstrom@1504:         if (ss == null) {
ohrstrom@1504:             ss = new HashSet<URI>();
ohrstrom@1504:             fs.put(s.pkg().name(), ss);
ohrstrom@1504:         }
ohrstrom@1504:         ss.add(s.file().toURI());
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * For all packages, find all sources belonging to the package, group the sources
ohrstrom@1504:      * based on their transformers and apply the transformers on each source code group.
ohrstrom@1504:      */
ohrstrom@1504:     private boolean perform(File outputDir, Map<String,Transformer> suffixRules)
ohrstrom@1504:     {
ohrstrom@1504:         boolean rc = true;
ohrstrom@1504:         // Group sources based on transforms. A source file can only belong to a single transform.
ohrstrom@1504:         Map<Transformer,Map<String,Set<URI>>> groupedSources = new HashMap<Transformer,Map<String,Set<URI>>>();
ohrstrom@1504:         for (Source src : now.sources().values()) {
ohrstrom@1504:             Transformer t = suffixRules.get(src.suffix());
ohrstrom@1504:                if (t != null) {
ohrstrom@1504:                 if (taintedPackages.contains(src.pkg().name()) && !src.isLinkedOnly()) {
ohrstrom@1504:                     addFileToTransform(groupedSources, t, src);
ohrstrom@1504:                 }
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:         // Go through the transforms and transform them.
ohrstrom@1504:         for (Map.Entry<Transformer,Map<String,Set<URI>>> e : groupedSources.entrySet()) {
ohrstrom@1504:             Transformer t = e.getKey();
ohrstrom@1504:             Map<String,Set<URI>> srcs = e.getValue();
ohrstrom@1504:             // These maps need to be synchronized since multiple threads will be writing results into them.
ohrstrom@1504:             Map<String,Set<URI>> packageArtifacts = Collections.synchronizedMap(new HashMap<String,Set<URI>>());
ohrstrom@1504:             Map<String,Set<String>> packageDependencies = Collections.synchronizedMap(new HashMap<String,Set<String>>());
ohrstrom@1504:             Map<String,String> packagePublicApis = Collections.synchronizedMap(new HashMap<String,String>());
ohrstrom@1504: 
ohrstrom@1504:             boolean  r = t.transform(srcs,
ohrstrom@1504:                                      visibleSrcs,
ohrstrom@1504:                                      visibleClasses,
ohrstrom@1504:                                      prev.dependents(),
ohrstrom@1504:                                      outputDir.toURI(),
ohrstrom@1504:                                      packageArtifacts,
ohrstrom@1504:                                      packageDependencies,
ohrstrom@1504:                                      packagePublicApis,
ohrstrom@1504:                                      0,
ohrstrom@1504:                                      isIncremental(),
ohrstrom@1504:                                      numCores,
ohrstrom@1504:                                      out,
ohrstrom@1504:                                      err);
ohrstrom@1504:             if (!r) rc = false;
ohrstrom@1504: 
ohrstrom@1504:             for (String p : srcs.keySet()) {
ohrstrom@1504:                 recompiledPackages.add(p);
ohrstrom@1504:             }
ohrstrom@1504:             // The transform is done! Extract all the artifacts and store the info into the Package objects.
ohrstrom@1504:             for (Map.Entry<String,Set<URI>> a : packageArtifacts.entrySet()) {
ohrstrom@1504:                 Module mnow = now.findModuleFromPackageName(a.getKey());
ohrstrom@1504:                 mnow.addArtifacts(a.getKey(), a.getValue());
ohrstrom@1504:             }
ohrstrom@1504:             // Extract all the dependencies and store the info into the Package objects.
ohrstrom@1504:             for (Map.Entry<String,Set<String>> a : packageDependencies.entrySet()) {
ohrstrom@1504:                 Set<String> deps = a.getValue();
ohrstrom@1504:                 Module mnow = now.findModuleFromPackageName(a.getKey());
ohrstrom@1504:                 mnow.setDependencies(a.getKey(), deps);
ohrstrom@1504:             }
ohrstrom@1504:             // Extract all the pubapis and store the info into the Package objects.
ohrstrom@1504:             for (Map.Entry<String,String> a : packagePublicApis.entrySet()) {
ohrstrom@1504:                 Module mprev = prev.findModuleFromPackageName(a.getKey());
ohrstrom@1504:                 List<String> pubapi = Package.pubapiToList(a.getValue());
ohrstrom@1504:                 Module mnow = now.findModuleFromPackageName(a.getKey());
ohrstrom@1504:                 mnow.setPubapi(a.getKey(), pubapi);
ohrstrom@1504:                 if (mprev.hasPubapiChanged(a.getKey(), pubapi)) {
ohrstrom@1504:                     // Aha! The pubapi of this package has changed!
ohrstrom@1504:                     // It can also be a new compile from scratch.
ohrstrom@1504:                     if (mprev.lookupPackage(a.getKey()).existsInJavacState()) {
ohrstrom@1504:                         // This is an incremental compile! The pubapi
ohrstrom@1504:                         // did change. Trigger recompilation of dependents.
ohrstrom@1504:                         packagesWithChangedPublicApis.add(a.getKey());
ohrstrom@1504:                         Log.info("The pubapi of "+Util.justPackageName(a.getKey())+" has changed!");
ohrstrom@1504:                     }
ohrstrom@1504:                 }
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:         return rc;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Utility method to recursively find all files below a directory.
ohrstrom@1504:      */
ohrstrom@1504:     private static Set<File> findAllFiles(File dir) {
ohrstrom@1504:         Set<File> foundFiles = new HashSet<File>();
ohrstrom@1504:         if (dir == null) {
ohrstrom@1504:             return foundFiles;
ohrstrom@1504:         }
ohrstrom@1504:         recurse(dir, foundFiles);
ohrstrom@1504:         return foundFiles;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     private static void recurse(File dir, Set<File> foundFiles) {
ohrstrom@1504:         for (File f : dir.listFiles()) {
ohrstrom@1504:             if (f.isFile()) {
ohrstrom@1504:                 foundFiles.add(f);
ohrstrom@1504:             } else if (f.isDirectory()) {
ohrstrom@1504:                 recurse(f, foundFiles);
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     /**
ohrstrom@1504:      * Compare the calculate source list, with an explicit list, usually supplied from the makefile.
ohrstrom@1504:      * Used to detect bugs where the makefile and sjavac have different opinions on which files
ohrstrom@1504:      * should be compiled.
ohrstrom@1504:      */
ohrstrom@1504:     public void compareWithMakefileList(File makefileSourceList)
ohrstrom@1504:             throws ProblemException
ohrstrom@1504:     {
ohrstrom@1504:         // If we are building on win32 using for example cygwin the paths in the makefile source list
ohrstrom@1504:         // might be /cygdrive/c/.... which does not match c:\....
ohrstrom@1504:         // We need to adjust our calculated sources to be identical, if necessary.
ohrstrom@1504:         boolean mightNeedRewriting = File.pathSeparatorChar == ';';
ohrstrom@1504: 
ohrstrom@1504:         if (makefileSourceList == null) return;
ohrstrom@1504: 
ohrstrom@1504:         Set<String> calculatedSources = new HashSet<String>();
ohrstrom@1504:         Set<String> listedSources = new HashSet<String>();
ohrstrom@1504: 
ohrstrom@1504:         // Create a set of filenames with full paths.
ohrstrom@1504:         for (Source s : now.sources().values()) {
ohrstrom@1504:             calculatedSources.add(s.file().getPath());
ohrstrom@1504:         }
ohrstrom@1504:         // Read in the file and create another set of filenames with full paths.
ohrstrom@1504:         try {
ohrstrom@1504:             BufferedReader in = new BufferedReader(new FileReader(makefileSourceList));
ohrstrom@1504:             for (;;) {
ohrstrom@1504:                 String l = in.readLine();
ohrstrom@1504:                 if (l==null) break;
ohrstrom@1504:                 l = l.trim();
ohrstrom@1504:                 if (mightNeedRewriting) {
ohrstrom@1504:                     if (l.indexOf(":") == 1 && l.indexOf("\\") == 2) {
ohrstrom@1504:                         // Everything a-ok, the format is already C:\foo\bar
ohrstrom@1504:                     } else if (l.indexOf(":") == 1 && l.indexOf("/") == 2) {
ohrstrom@1504:                         // The format is C:/foo/bar, rewrite into the above format.
ohrstrom@1504:                         l = l.replaceAll("/","\\\\");
ohrstrom@1504:                     } else if (l.charAt(0) == '/' && l.indexOf("/",1) != -1) {
ohrstrom@1504:                         // The format might be: /cygdrive/c/foo/bar, rewrite into the above format.
ohrstrom@1504:                         // Do not hardcode the name cygdrive here.
ohrstrom@1504:                         int slash = l.indexOf("/",1);
ohrstrom@1504:                         l = l.replaceAll("/","\\\\");
ohrstrom@1504:                         l = ""+l.charAt(slash+1)+":"+l.substring(slash+2);
ohrstrom@1504:                     }
ohrstrom@1504:                     if (Character.isLowerCase(l.charAt(0))) {
ohrstrom@1504:                         l = Character.toUpperCase(l.charAt(0))+l.substring(1);
ohrstrom@1504:                     }
ohrstrom@1504:                 }
ohrstrom@1504:                 listedSources.add(l);
ohrstrom@1504:             }
ohrstrom@1504:         } catch (FileNotFoundException e) {
ohrstrom@1504:             throw new ProblemException("Could not open "+makefileSourceList.getPath()+" since it does not exist!");
ohrstrom@1504:         } catch (IOException e) {
ohrstrom@1504:             throw new ProblemException("Could not read "+makefileSourceList.getPath());
ohrstrom@1504:         }
ohrstrom@1504: 
ohrstrom@1504:         for (String s : listedSources) {
ohrstrom@1504:             if (!calculatedSources.contains(s)) {
ohrstrom@1504:                  throw new ProblemException("The makefile listed source "+s+" was not calculated by the smart javac wrapper!");
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504: 
ohrstrom@1504:         for (String s : calculatedSources) {
ohrstrom@1504:             if (!listedSources.contains(s)) {
ohrstrom@1504:                 throw new ProblemException("The smart javac wrapper calculated source "+s+" was not listed by the makefiles!");
ohrstrom@1504:             }
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: }