make.langtools.tools.anttasks.GenStubsTask Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of nb-javac Show documentation
Show all versions of nb-javac Show documentation
"nb-javac" is a patched version of OpenJDK "javac", i.e., the Java compiler. This has long been part of NetBeans, providing a highly tuned Java compiler specifically for the Java editor i.e., parsing and lexing for features such as syntax coloring, code completion.
/*
* Copyright (c) 2009, 2014, 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 anttasks;
import genstubs.GenStubs;
import java.io.*;
import java.util.*;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.taskdefs.MatchingTask;
import org.apache.tools.ant.types.Path;
import org.apache.tools.ant.types.Reference;
/**
* Files are specified with an implicit fileset, using srcdir as a base directory.
* The set of files to be included is specified with an includes attribute or
* nested set. However, unlike a normal fileset, an empty includes attribute
* means "no files" instead of "all files". The Ant task also accepts "fork=true" and
* classpath attribute or nested element to run GenStubs in a separate VM
* with the specified path. This is likely necessary if a JDK 7 parser is required to read the
* JDK 7 input files.
*/
public class GenStubsTask extends MatchingTask {
private File srcDir;
private File destDir;
private boolean fork;
private Path classpath;
private String includes;
public void setSrcDir(File dir) {
this.srcDir = dir;
}
public void setDestDir(File dir) {
this.destDir = dir;
}
public void setFork(boolean v) {
this.fork = v;
}
public void setClasspath(Path cp) {
if (classpath == null)
classpath = cp;
else
classpath.append(cp);
}
public Path createClasspath() {
if (classpath == null) {
classpath = new Path(getProject());
}
return classpath.createPath();
}
public void setClasspathRef(Reference r) {
createClasspath().setRefid(r);
}
@Override
public void setIncludes(String includes) {
super.setIncludes(includes);
this.includes = includes;
}
@Override
public void execute() {
if (includes != null && includes.trim().isEmpty())
return;
DirectoryScanner s = getDirectoryScanner(srcDir);
String[] files = s.getIncludedFiles();
// System.err.println("Ant.execute: srcDir " + srcDir);
// System.err.println("Ant.execute: destDir " + destDir);
// System.err.println("Ant.execute: files " + Arrays.asList(files));
files = filter(srcDir, destDir, files);
if (files.length == 0)
return;
System.out.println("Generating " + files.length + " stub files to " + destDir);
List classNames = new ArrayList<>();
for (String file: files) {
classNames.add(file.replaceAll(".java$", "").replace('/', '.'));
}
if (!fork) {
GenStubs m = new GenStubs();
boolean ok = m.run(srcDir.getPath(), destDir, classNames);
if (!ok)
throw new BuildException("genstubs failed");
} else {
List cmd = new ArrayList<>();
String java_home = System.getProperty("java.home");
cmd.add(new File(new File(java_home, "bin"), "java").getPath());
if (classpath != null)
cmd.add("-Xbootclasspath/p:" + classpath);
cmd.add(GenStubs.class.getName());
cmd.add("-sourcepath");
cmd.add(srcDir.getPath());
cmd.add("-s");
cmd.add(destDir.getPath());
cmd.addAll(classNames);
//System.err.println("GenStubs exec " + cmd);
ProcessBuilder pb = new ProcessBuilder(cmd);
pb.redirectErrorStream(true);
try {
Process p = pb.start();
try (BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()))) {
String line;
while ((line = in.readLine()) != null)
System.out.println(line);
}
int rc = p.waitFor();
if (rc != 0)
throw new BuildException("genstubs failed");
} catch (IOException | InterruptedException e) {
throw new BuildException("genstubs failed", e);
}
}
}
String[] filter(File srcDir, File destDir, String[] files) {
List results = new ArrayList();
for (String f: files) {
long srcTime = new File(srcDir, f).lastModified();
long destTime = new File(destDir, f).lastModified();
if (srcTime > destTime)
results.add(f);
}
return results.toArray(new String[results.size()]);
}
}