src/jdk.compiler/share/classes/com/sun/tools/sjavac/Source.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2012, 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;

 import java.io.File;
 import java.io.IOException;
 import java.nio.file.FileSystem;
 import java.nio.file.FileVisitResult;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.PathMatcher;
 import java.nio.file.SimpleFileVisitor;
 import java.nio.file.attribute.BasicFileAttributes;
 import java.util.Set;
 import java.util.Collections;
 import java.util.List;
 import java.util.ArrayList;
 import java.util.Map;
 import java.util.regex.PatternSyntaxException;

 /** A Source object maintains information about a source file.
  * For example which package it belongs to and kind of source it is.
  * The class also knows how to find source files (scanRoot) given include/exclude
  * patterns and a root.
  *
  *  <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 Source implements Comparable<Source> {
     // The package the source belongs to.
    private Package pkg;
     // Name of this source file, relative its source root.
     // For example: java/lang/Object.java
     // Or if the source file is inside a module:
     // jdk.base/java/lang/Object.java
     private String name;
     // What kind of file is this.
     private String suffix;
     // When this source file was last_modified
     private long lastModified;
     // The source File.
     private File file;
     // If the source is generated.
     private boolean isGenerated;
     // If the source is only linked to, not compiled.
     private boolean linkedOnly;

     @Override
     public boolean equals(Object o) {
         return (o instanceof Source) && name.equals(((Source)o).name);
     }

     @Override
     public int compareTo(Source o) {
         return name.compareTo(o.name);
     }

     @Override
     public int hashCode() {
         return name.hashCode();
     }

     public Source(Module m, String n, File f) {
         name = n;
         int dp = n.lastIndexOf(".");
         if (dp != -1) {
             suffix = n.substring(dp);
         } else {
             suffix = "";
         }
         file = f;
         lastModified = f.lastModified();
         linkedOnly = false;
     }

     public Source(Package p, String n, long lm) {
         pkg = p;
         name = n;
         int dp = n.lastIndexOf(".");
         if (dp != -1) {
             suffix = n.substring(dp);
         } else {
             suffix = "";
         }
         file = null;
         lastModified = lm;
         linkedOnly = false;
         int ls = n.lastIndexOf('/');
     }

     public String name() { return name; }
     public String suffix() { return suffix; }
     public Package pkg() { return pkg; }
     public File   file() { return file; }
     public long lastModified() {
         return lastModified;
     }

     public void setPackage(Package p) {
         pkg = p;
     }

     public void markAsGenerated() {
         isGenerated = true;
     }

     public boolean isGenerated() {
         return isGenerated;
     }

     public void markAsLinkedOnly() {
         linkedOnly = true;
     }

     public boolean isLinkedOnly() {
         return linkedOnly;
     }

     private void save(StringBuilder b) {
         String CL = linkedOnly?"L":"C";
         String GS = isGenerated?"G":"S";
         b.append(GS+" "+CL+" "+name+" "+file.lastModified()+"\n");
     }
     // Parse a line that looks like this:
     // S C /code/alfa/A.java 1357631228000
     static public Source load(Package lastPackage, String l, boolean isGenerated) {
         int sp = l.indexOf(' ',4);
         if (sp == -1) return null;
         String name = l.substring(4,sp);
         long last_modified = Long.parseLong(l.substring(sp+1));

         boolean isLinkedOnly = false;
         if (l.charAt(2) == 'L') {
             isLinkedOnly = true;
         } else if (l.charAt(2) == 'C') {
             isLinkedOnly = false;
         } else return null;

         Source s = new Source(lastPackage, name, last_modified);
         s.file = new File(name);
         if (isGenerated) s.markAsGenerated();
         if (isLinkedOnly) s.markAsLinkedOnly();
         return s;
     }

     public static void saveSources(Map<String,Source> sources, StringBuilder b) {
         List<String> sorted_sources = new ArrayList<>();
         for (String key : sources.keySet()) {
             sorted_sources.add(key);
         }
         Collections.sort(sorted_sources);
         for (String key : sorted_sources) {
             Source s = sources.get(key);
             s.save(b);
         }
     }

     /**
      * Recurse into the directory root and find all files matchine the excl/incl/exclfiles/inclfiles rules.
      * Detects the existence of module-info.java files and presumes that the directory it resides in
      * is the name of the current module.
      */
     static public void scanRoot(File root,
                                 Set<String> suffixes,
                                 List<String> excludes,
                                 List<String> includes,
                                 Map<String,Source> foundFiles,
                                 Map<String,Module> foundModules,
                                 final Module currentModule,
                                 boolean permitSourcesWithoutPackage,
                                 boolean inGensrc,
                                 boolean inLinksrc)
                                         throws IOException, ProblemException {

         if (root == null)
             return;

         FileSystem fs = root.toPath().getFileSystem();

         if (includes.isEmpty()) {
             includes = Collections.singletonList("**");
         }

         List<PathMatcher> includeMatchers = createPathMatchers(fs, includes);
         List<PathMatcher> excludeMatchers = createPathMatchers(fs, excludes);

         Files.walkFileTree(root.toPath(), new SimpleFileVisitor<Path>() {
             @Override
             public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {

                 Path relToRoot = root.toPath().relativize(file);

                 if (includeMatchers.stream().anyMatch(im -> im.matches(relToRoot))
                         && excludeMatchers.stream().noneMatch(em -> em.matches(relToRoot))
                         && suffixes.contains(Util.fileSuffix(file))) {

                     // TODO: Test this.
                     Source existing = foundFiles.get(file);
                     if (existing != null) {
                         throw new IOException("You have already added the file "+file+" from "+existing.file().getPath());
                     }
                     existing = currentModule.lookupSource(file.toString());
                     if (existing != null) {

                             // Oups, the source is already added, could be ok, could be not, lets check.
                             if (inLinksrc) {
                                 // So we are collecting sources for linking only.
                                 if (existing.isLinkedOnly()) {
                                     // Ouch, this one is also for linking only. Bad.
                                     throw new IOException("You have already added the link only file " + file + " from " + existing.file().getPath());
                                 }
                                 // Ok, the existing source is to be compiled. Thus this link only is redundant
                                 // since all compiled are also linked to. Continue to the next source.
                                 // But we need to add the source, so that it will be visible to linking,
                                 // if not the multi core compile will fail because a JavaCompiler cannot
                                 // find the necessary dependencies for its part of the source.
                                 foundFiles.put(file.toString(), existing);
                             } else {
                                 // We are looking for sources to compile, if we find an existing to be compiled
                                 // source with the same name, it is an internal error, since we must
                                 // find the sources to be compiled before we find the sources to be linked to.
                                 throw new IOException("Internal error: Double add of file " + file + " from " + existing.file().getPath());
                             }

                     } else {

                         //////////////////////////////////////////////////////////////
                         // Add source
                         Source s = new Source(currentModule, file.toString(), file.toFile());
                         if (inGensrc) {
                             s.markAsGenerated();
                         }
                         if (inLinksrc) {
                             s.markAsLinkedOnly();
                         }
                         String pkg = packageOfJavaFile(root.toPath(), file);
                         pkg = currentModule.name() + ":" + pkg;
                         foundFiles.put(file.toString(), s);
                         currentModule.addSource(pkg, s);
                         //////////////////////////////////////////////////////////////
                     }
                 }

                 return FileVisitResult.CONTINUE;
             }
         });
     }

     private static List<PathMatcher> createPathMatchers(FileSystem fs, List<String> patterns) {
         List<PathMatcher> matchers = new ArrayList<>();
         for (String pattern : patterns) {
             try {
                 matchers.add(fs.getPathMatcher("glob:" + pattern));
             } catch (PatternSyntaxException e) {
                 Log.error("Invalid pattern: " + pattern);
                 throw e;
             }
         }
         return matchers;
     }

     private static String packageOfJavaFile(Path sourceRoot, Path javaFile) {
         Path javaFileDir = javaFile.getParent();
         Path packageDir = sourceRoot.relativize(javaFileDir);
         List<String> separateDirs = new ArrayList<>();
         for (Path pathElement : packageDir) {
             separateDirs.add(pathElement.getFileName().toString());
         }
         return String.join(".", separateDirs);
     }

     @Override
     public String toString() {
         return String.format("%s[pkg: %s, name: %s, suffix: %s, file: %s, isGenerated: %b, linkedOnly: %b]",
                              getClass().getSimpleName(),
                              pkg,
                              name,
                              suffix,
                              file,
                              isGenerated,
                              linkedOnly);
     }
 }
	/*
	* Copyright (c) 2012, 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;

	import java.io.File;
	import java.io.IOException;
	import java.nio.file.FileSystem;
	import java.nio.file.FileVisitResult;
	import java.nio.file.Files;
	import java.nio.file.Path;
	import java.nio.file.PathMatcher;
	import java.nio.file.SimpleFileVisitor;
	import java.nio.file.attribute.BasicFileAttributes;
	import java.util.Set;
	import java.util.Collections;
	import java.util.List;
	import java.util.ArrayList;
	import java.util.Map;
	import java.util.regex.PatternSyntaxException;

	/** A Source object maintains information about a source file.
	* For example which package it belongs to and kind of source it is.
	* The class also knows how to find source files (scanRoot) given include/exclude
	* patterns and a root.
	*
	* <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 Source implements Comparable<Source> {
	// The package the source belongs to.
	private Package pkg;
	// Name of this source file, relative its source root.
	// For example: java/lang/Object.java
	// Or if the source file is inside a module:
	// jdk.base/java/lang/Object.java
	private String name;
	// What kind of file is this.
	private String suffix;
	// When this source file was last_modified
	private long lastModified;
	// The source File.
	private File file;
	// If the source is generated.
	private boolean isGenerated;
	// If the source is only linked to, not compiled.
	private boolean linkedOnly;

	@Override
	public boolean equals(Object o) {
	return (o instanceof Source) && name.equals(((Source)o).name);
	}

	@Override
	public int compareTo(Source o) {
	return name.compareTo(o.name);
	}

	@Override
	public int hashCode() {
	return name.hashCode();
	}

	public Source(Module m, String n, File f) {
	name = n;
	int dp = n.lastIndexOf(".");
	if (dp != -1) {
	suffix = n.substring(dp);
	} else {
	suffix = "";
	}
	file = f;
	lastModified = f.lastModified();
	linkedOnly = false;
	}

	public Source(Package p, String n, long lm) {
	pkg = p;
	name = n;
	int dp = n.lastIndexOf(".");
	if (dp != -1) {
	suffix = n.substring(dp);
	} else {
	suffix = "";
	}
	file = null;
	lastModified = lm;
	linkedOnly = false;
	int ls = n.lastIndexOf('/');
	}

	public String name() { return name; }
	public String suffix() { return suffix; }
	public Package pkg() { return pkg; }
	public File file() { return file; }
	public long lastModified() {
	return lastModified;
	}

	public void setPackage(Package p) {
	pkg = p;
	}

	public void markAsGenerated() {
	isGenerated = true;
	}

	public boolean isGenerated() {
	return isGenerated;
	}

	public void markAsLinkedOnly() {
	linkedOnly = true;
	}

	public boolean isLinkedOnly() {
	return linkedOnly;
	}

	private void save(StringBuilder b) {
	String CL = linkedOnly?"L":"C";
	String GS = isGenerated?"G":"S";
	b.append(GS+" "+CL+" "+name+" "+file.lastModified()+"\n");
	}
	// Parse a line that looks like this:
	// S C /code/alfa/A.java 1357631228000
	static public Source load(Package lastPackage, String l, boolean isGenerated) {
	int sp = l.indexOf(' ',4);
	if (sp == -1) return null;
	String name = l.substring(4,sp);
	long last_modified = Long.parseLong(l.substring(sp+1));

	boolean isLinkedOnly = false;
	if (l.charAt(2) == 'L') {
	isLinkedOnly = true;
	} else if (l.charAt(2) == 'C') {
	isLinkedOnly = false;
	} else return null;

	Source s = new Source(lastPackage, name, last_modified);
	s.file = new File(name);
	if (isGenerated) s.markAsGenerated();
	if (isLinkedOnly) s.markAsLinkedOnly();
	return s;
	}

	public static void saveSources(Map<String,Source> sources, StringBuilder b) {
	List<String> sorted_sources = new ArrayList<>();
	for (String key : sources.keySet()) {
	sorted_sources.add(key);
	}
	Collections.sort(sorted_sources);
	for (String key : sorted_sources) {
	Source s = sources.get(key);
	s.save(b);
	}
	}

	/**
	* Recurse into the directory root and find all files matchine the excl/incl/exclfiles/inclfiles rules.
	* Detects the existence of module-info.java files and presumes that the directory it resides in
	* is the name of the current module.
	*/
	static public void scanRoot(File root,
	Set<String> suffixes,
	List<String> excludes,
	List<String> includes,
	Map<String,Source> foundFiles,
	Map<String,Module> foundModules,
	final Module currentModule,
	boolean permitSourcesWithoutPackage,
	boolean inGensrc,
	boolean inLinksrc)
	throws IOException, ProblemException {

	if (root == null)
	return;

	FileSystem fs = root.toPath().getFileSystem();

	if (includes.isEmpty()) {
	includes = Collections.singletonList("**");
	}

	List<PathMatcher> includeMatchers = createPathMatchers(fs, includes);
	List<PathMatcher> excludeMatchers = createPathMatchers(fs, excludes);

	Files.walkFileTree(root.toPath(), new SimpleFileVisitor<Path>() {
	@Override
	public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {

	Path relToRoot = root.toPath().relativize(file);

	if (includeMatchers.stream().anyMatch(im -> im.matches(relToRoot))
	&& excludeMatchers.stream().noneMatch(em -> em.matches(relToRoot))
	&& suffixes.contains(Util.fileSuffix(file))) {

	// TODO: Test this.
	Source existing = foundFiles.get(file);
	if (existing != null) {
	throw new IOException("You have already added the file "+file+" from "+existing.file().getPath());
	}
	existing = currentModule.lookupSource(file.toString());
	if (existing != null) {

	// Oups, the source is already added, could be ok, could be not, lets check.
	if (inLinksrc) {
	// So we are collecting sources for linking only.
	if (existing.isLinkedOnly()) {
	// Ouch, this one is also for linking only. Bad.
	throw new IOException("You have already added the link only file " + file + " from " + existing.file().getPath());
	}
	// Ok, the existing source is to be compiled. Thus this link only is redundant
	// since all compiled are also linked to. Continue to the next source.
	// But we need to add the source, so that it will be visible to linking,
	// if not the multi core compile will fail because a JavaCompiler cannot
	// find the necessary dependencies for its part of the source.
	foundFiles.put(file.toString(), existing);
	} else {
	// We are looking for sources to compile, if we find an existing to be compiled
	// source with the same name, it is an internal error, since we must
	// find the sources to be compiled before we find the sources to be linked to.
	throw new IOException("Internal error: Double add of file " + file + " from " + existing.file().getPath());
	}

	} else {

	//////////////////////////////////////////////////////////////
	// Add source
	Source s = new Source(currentModule, file.toString(), file.toFile());
	if (inGensrc) {
	s.markAsGenerated();
	}
	if (inLinksrc) {
	s.markAsLinkedOnly();
	}
	String pkg = packageOfJavaFile(root.toPath(), file);
	pkg = currentModule.name() + ":" + pkg;
	foundFiles.put(file.toString(), s);
	currentModule.addSource(pkg, s);
	//////////////////////////////////////////////////////////////
	}
	}

	return FileVisitResult.CONTINUE;
	}
	});
	}

	private static List<PathMatcher> createPathMatchers(FileSystem fs, List<String> patterns) {
	List<PathMatcher> matchers = new ArrayList<>();
	for (String pattern : patterns) {
	try {
	matchers.add(fs.getPathMatcher("glob:" + pattern));
	} catch (PatternSyntaxException e) {
	Log.error("Invalid pattern: " + pattern);
	throw e;
	}
	}
	return matchers;
	}

	private static String packageOfJavaFile(Path sourceRoot, Path javaFile) {
	Path javaFileDir = javaFile.getParent();
	Path packageDir = sourceRoot.relativize(javaFileDir);
	List<String> separateDirs = new ArrayList<>();
	for (Path pathElement : packageDir) {
	separateDirs.add(pathElement.getFileName().toString());
	}
	return String.join(".", separateDirs);
	}

	@Override
	public String toString() {
	return String.format("%s[pkg: %s, name: %s, suffix: %s, file: %s, isGenerated: %b, linkedOnly: %b]",
	getClass().getSimpleName(),
	pkg,
	name,
	suffix,
	file,
	isGenerated,
	linkedOnly);
	}
	}