| /* |
| * Copyright (c) 2014, 2016, 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.comp; |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.stream.Stream; |
| |
| import com.sun.tools.javac.file.JavacFileManager; |
| import com.sun.tools.javac.main.Main; |
| import com.sun.tools.javac.util.Context; |
| import com.sun.tools.sjavac.JavacState; |
| import com.sun.tools.sjavac.Log; |
| import com.sun.tools.sjavac.Module; |
| import com.sun.tools.sjavac.ProblemException; |
| import com.sun.tools.sjavac.Source; |
| import com.sun.tools.sjavac.Transformer; |
| import com.sun.tools.sjavac.Util; |
| import com.sun.tools.sjavac.options.Option; |
| import com.sun.tools.sjavac.options.Options; |
| import com.sun.tools.sjavac.options.SourceLocation; |
| import com.sun.tools.sjavac.server.Sjavac; |
| import java.io.UncheckedIOException; |
| |
| import javax.tools.JavaFileManager; |
| |
| /** |
| * The sjavac implementation that interacts with javac and performs the actual |
| * compilation. |
| * |
| * <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> |
| */ |
| public class SjavacImpl implements Sjavac { |
| |
| @Override |
| public int compile(String[] args) { |
| Options options; |
| try { |
| options = Options.parseArgs(args); |
| } catch (IllegalArgumentException e) { |
| Log.error(e.getMessage()); |
| return RC_FATAL; |
| } |
| |
| if (!validateOptions(options)) |
| return RC_FATAL; |
| |
| if (srcDstOverlap(options.getSources(), options.getDestDir())) { |
| return RC_FATAL; |
| } |
| |
| if (!createIfMissing(options.getDestDir())) |
| return RC_FATAL; |
| |
| Path stateDir = options.getStateDir(); |
| if (stateDir != null && !createIfMissing(options.getStateDir())) |
| return RC_FATAL; |
| |
| Path gensrc = options.getGenSrcDir(); |
| if (gensrc != null && !createIfMissing(gensrc)) |
| return RC_FATAL; |
| |
| Path hdrdir = options.getHeaderDir(); |
| if (hdrdir != null && !createIfMissing(hdrdir)) |
| return RC_FATAL; |
| |
| if (stateDir == null) { |
| // Prepare context. Direct logging to our byte array stream. |
| Context context = new Context(); |
| StringWriter strWriter = new StringWriter(); |
| PrintWriter printWriter = new PrintWriter(strWriter); |
| com.sun.tools.javac.util.Log.preRegister(context, printWriter); |
| JavacFileManager.preRegister(context); |
| |
| // Prepare arguments |
| String[] passThroughArgs = Stream.of(args) |
| .filter(arg -> !arg.startsWith(Option.SERVER.arg)) |
| .toArray(String[]::new); |
| // Compile |
| Main.Result result = new Main("javac", printWriter).compile(passThroughArgs, context); |
| |
| // Process compiler output (which is always errors) |
| printWriter.flush(); |
| Util.getLines(strWriter.toString()).forEach(Log::error); |
| |
| // Clean up |
| JavaFileManager fileManager = context.get(JavaFileManager.class); |
| if (fileManager instanceof JavacFileManager) { |
| try { |
| ((JavacFileManager) fileManager).close(); |
| } catch (IOException es) { |
| throw new UncheckedIOException(es); |
| } |
| } |
| return result.exitCode; |
| |
| } else { |
| // Load the prev build state database. |
| JavacState javac_state = JavacState.load(options); |
| |
| // Setup the suffix rules from the command line. |
| Map<String, Transformer> suffixRules = new HashMap<>(); |
| |
| // Handling of .java-compilation |
| suffixRules.putAll(javac_state.getJavaSuffixRule()); |
| |
| // Handling of -copy and -tr |
| suffixRules.putAll(options.getTranslationRules()); |
| |
| // All found modules are put here. |
| Map<String,Module> modules = new HashMap<>(); |
| // We start out in the legacy empty no-name module. |
| // As soon as we stumble on a module-info.java file we change to that module. |
| Module current_module = new Module("", ""); |
| modules.put("", current_module); |
| |
| try { |
| // Find all sources, use the suffix rules to know which files are sources. |
| Map<String,Source> sources = new HashMap<>(); |
| |
| // Find the files, this will automatically populate the found modules |
| // with found packages where the sources are found! |
| findSourceFiles(options.getSources(), |
| suffixRules.keySet(), |
| sources, |
| modules, |
| current_module, |
| options.isDefaultPackagePermitted(), |
| false); |
| |
| if (sources.isEmpty()) { |
| Log.error("Found nothing to compile!"); |
| return RC_FATAL; |
| } |
| |
| |
| // Create a map of all source files that are available for linking. Both -src and |
| // -sourcepath point to such files. It is possible to specify multiple |
| // -sourcepath options to enable different filtering rules. If the |
| // filters are the same for multiple sourcepaths, they may be concatenated |
| // using :(;). Before sending the list of sourcepaths to javac, they are |
| // all concatenated. The list created here is used by the SmartFileWrapper to |
| // make sure only the correct sources are actually available. |
| // We might find more modules here as well. |
| Map<String,Source> sources_to_link_to = new HashMap<>(); |
| |
| List<SourceLocation> sourceResolutionLocations = new ArrayList<>(); |
| sourceResolutionLocations.addAll(options.getSources()); |
| sourceResolutionLocations.addAll(options.getSourceSearchPaths()); |
| findSourceFiles(sourceResolutionLocations, |
| Collections.singleton(".java"), |
| sources_to_link_to, |
| modules, |
| current_module, |
| options.isDefaultPackagePermitted(), |
| true); |
| |
| // Add the set of sources to the build database. |
| javac_state.now().flattenPackagesSourcesAndArtifacts(modules); |
| javac_state.now().checkInternalState("checking sources", false, sources); |
| javac_state.now().checkInternalState("checking linked sources", true, sources_to_link_to); |
| javac_state.setVisibleSources(sources_to_link_to); |
| |
| int round = 0; |
| printRound(round); |
| |
| // If there is any change in the source files, taint packages |
| // and mark the database in need of saving. |
| javac_state.checkSourceStatus(false); |
| |
| // Find all existing artifacts. Their timestamp will match the last modified timestamps stored |
| // in javac_state, simply because loading of the JavacState will clean out all artifacts |
| // that do not match the javac_state database. |
| javac_state.findAllArtifacts(); |
| |
| // Remove unidentified artifacts from the bin, gensrc and header dirs. |
| // (Unless we allow them to be there.) |
| // I.e. artifacts that are not known according to the build database (javac_state). |
| // For examples, files that have been manually copied into these dirs. |
| // Artifacts with bad timestamps (ie the on disk timestamp does not match the timestamp |
| // in javac_state) have already been removed when the javac_state was loaded. |
| if (!options.areUnidentifiedArtifactsPermitted()) { |
| javac_state.removeUnidentifiedArtifacts(); |
| } |
| // Go through all sources and taint all packages that miss artifacts. |
| javac_state.taintPackagesThatMissArtifacts(); |
| |
| // Check recorded classpath public apis. Taint packages that depend on |
| // classpath classes whose public apis have changed. |
| javac_state.taintPackagesDependingOnChangedClasspathPackages(); |
| |
| // Now clean out all known artifacts belonging to tainted packages. |
| javac_state.deleteClassArtifactsInTaintedPackages(); |
| // Copy files, for example property files, images files, xml files etc etc. |
| javac_state.performCopying(Util.pathToFile(options.getDestDir()), suffixRules); |
| // Translate files, for example compile properties or compile idls. |
| javac_state.performTranslation(Util.pathToFile(gensrc), suffixRules); |
| // Add any potentially generated java sources to the tobe compiled list. |
| // (Generated sources must always have a package.) |
| Map<String,Source> generated_sources = new HashMap<>(); |
| |
| Source.scanRoot(Util.pathToFile(options.getGenSrcDir()), |
| Util.set(".java"), |
| Collections.emptyList(), |
| Collections.emptyList(), |
| generated_sources, |
| modules, |
| current_module, |
| false, |
| true, |
| false); |
| javac_state.now().flattenPackagesSourcesAndArtifacts(modules); |
| // Recheck the the source files and their timestamps again. |
| javac_state.checkSourceStatus(true); |
| |
| // Now do a safety check that the list of source files is identical |
| // to the list Make believes we are compiling. If we do not get this |
| // right, then incremental builds will fail with subtility. |
| // If any difference is detected, then we will fail hard here. |
| // This is an important safety net. |
| javac_state.compareWithMakefileList(Util.pathToFile(options.getSourceReferenceList())); |
| |
| // Do the compilations, repeatedly until no tainted packages exist. |
| boolean again; |
| // Collect the name of all compiled packages. |
| Set<String> recently_compiled = new HashSet<>(); |
| boolean[] rc = new boolean[1]; |
| |
| CompilationService compilationService = new CompilationService(); |
| do { |
| if (round > 0) |
| printRound(round); |
| // Clean out artifacts in tainted packages. |
| javac_state.deleteClassArtifactsInTaintedPackages(); |
| again = javac_state.performJavaCompilations(compilationService, |
| options, |
| recently_compiled, |
| rc); |
| if (!rc[0]) { |
| Log.debug("Compilation failed."); |
| break; |
| } |
| if (!again) { |
| Log.debug("Nothing left to do."); |
| } |
| round++; |
| } while (again); |
| Log.debug("No need to do another round."); |
| |
| // Only update the state if the compile went well. |
| if (rc[0]) { |
| javac_state.save(); |
| // Reflatten only the artifacts. |
| javac_state.now().flattenArtifacts(modules); |
| // Remove artifacts that were generated during the last compile, but not this one. |
| javac_state.removeSuperfluousArtifacts(recently_compiled); |
| } |
| |
| return rc[0] ? RC_OK : RC_FATAL; |
| } catch (ProblemException e) { |
| // For instance make file list mismatch. |
| Log.error(e.getMessage()); |
| Log.debug(e); |
| return RC_FATAL; |
| } catch (Exception e) { |
| Log.error(e); |
| return RC_FATAL; |
| } |
| } |
| } |
| |
| @Override |
| public void shutdown() { |
| // Nothing to clean up |
| } |
| |
| private static boolean validateOptions(Options options) { |
| |
| String err = null; |
| |
| if (options.getDestDir() == null) { |
| err = "Please specify output directory."; |
| } else if (options.isJavaFilesAmongJavacArgs()) { |
| err = "Sjavac does not handle explicit compilation of single .java files."; |
| } else if (!options.getImplicitPolicy().equals("none")) { |
| err = "The only allowed setting for sjavac is -implicit:none"; |
| } else if (options.getSources().isEmpty() && options.getStateDir() != null) { |
| err = "You have to specify -src when using --state-dir."; |
| } else if (options.getTranslationRules().size() > 1 |
| && options.getGenSrcDir() == null) { |
| err = "You have translators but no gensrc dir (-s) specified!"; |
| } |
| |
| if (err != null) |
| Log.error(err); |
| |
| return err == null; |
| |
| } |
| |
| private static boolean srcDstOverlap(List<SourceLocation> locs, Path dest) { |
| for (SourceLocation loc : locs) { |
| if (isOverlapping(loc.getPath(), dest)) { |
| Log.error("Source location " + loc.getPath() + " overlaps with destination " + dest); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private static boolean isOverlapping(Path p1, Path p2) { |
| p1 = p1.toAbsolutePath().normalize(); |
| p2 = p2.toAbsolutePath().normalize(); |
| return p1.startsWith(p2) || p2.startsWith(p1); |
| } |
| |
| private static boolean createIfMissing(Path dir) { |
| |
| if (Files.isDirectory(dir)) |
| return true; |
| |
| if (Files.exists(dir)) { |
| Log.error(dir + " is not a directory."); |
| return false; |
| } |
| |
| try { |
| Files.createDirectories(dir); |
| } catch (IOException e) { |
| Log.error("Could not create directory: " + e.getMessage()); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /** Find source files in the given source locations. */ |
| public static void findSourceFiles(List<SourceLocation> sourceLocations, |
| Set<String> sourceTypes, |
| Map<String,Source> foundFiles, |
| Map<String, Module> foundModules, |
| Module currentModule, |
| boolean permitSourcesInDefaultPackage, |
| boolean inLinksrc) |
| throws IOException { |
| |
| for (SourceLocation source : sourceLocations) { |
| source.findSourceFiles(sourceTypes, |
| foundFiles, |
| foundModules, |
| currentModule, |
| permitSourcesInDefaultPackage, |
| inLinksrc); |
| } |
| } |
| |
| private static void printRound(int round) { |
| Log.debug("****************************************"); |
| Log.debug("* Round " + round + " *"); |
| Log.debug("****************************************"); |
| } |
| } |