6902337: fix langtools build to allow forward refs into jdk/ repo
Reviewed-by: ohair, mcimadamore
--- a/langtools/make/Makefile Fri Nov 20 10:15:54 2009 -0800
+++ b/langtools/make/Makefile Fri Nov 20 11:18:43 2009 -0800
@@ -133,6 +133,23 @@
ANT_JAVA_HOME = JAVA_HOME=$(ALT_BOOTDIR)
endif
+# To facilitate bootstrapping, much of langtools can be compiled with (just)
+# a boot JDK. However, some source files need to be compiled against
+# new JDK API. In a bootstrap build, an import JDK may not be available,
+# so build.xml can also build against the source files in a jdk repo,
+# in which case it will automatically generate stub files for the new JDK API.
+ifdef JDK_TOPDIR
+ ANT_OPTIONS += -Dimport.jdk=$(JDK_TOPDIR)
+else
+ ifdef ALT_JDK_TOPDIR
+ ANT_OPTIONS += -Dimport.jdk=$(ALT_JDK_TOPDIR)
+ else
+ ifdef ALT_JDK_IMPORT_DIR
+ ANT_OPTIONS += -Dimport.jdk=$(ALT_JDK_IMPORT_DIR)
+ endif
+ endif
+endif
+
ifdef ALT_OUTPUTDIR
OUTPUTDIR = $(ALT_OUTPUTDIR)
ANT_OPTIONS += -Dbuild.dir=$(ALT_OUTPUTDIR)/build
--- a/langtools/make/build.properties Fri Nov 20 10:15:54 2009 -0800
+++ b/langtools/make/build.properties Fri Nov 20 11:18:43 2009 -0800
@@ -148,6 +148,13 @@
#
+# The following files require the import JDK to be available
+require.import.jdk.files =
+
+# The following files in the import jdk source directory are required
+# in order to compile the files defined in ${require.import.jdk.files}
+import.jdk.stub.files =
+
# The following value is used by the main jtreg target.
# An empty value means all tests
# Override as desired to run a specific set of tests
--- a/langtools/make/build.xml Fri Nov 20 10:15:54 2009 -0800
+++ b/langtools/make/build.xml Fri Nov 20 11:18:43 2009 -0800
@@ -56,6 +56,7 @@
<property name="build.coverage.dir" location="${build.dir}/coverage"/>
<property name="build.classes.dir" location="${build.dir}/classes"/>
<property name="build.gensrc.dir" location="${build.dir}/gensrc"/>
+ <property name="build.genstubs.dir" location="${build.dir}/genstubs"/>
<property name="build.javadoc.dir" location="${build.dir}/javadoc"/>
<property name="build.jtreg.dir" location="${build.dir}/jtreg"/>
<property name="build.toolclasses.dir" location="${build.dir}/toolclasses"/>
@@ -93,6 +94,41 @@
<isset property="target.java.home"/>
</condition>
+ <!-- Logic for handling access import jdk classes, if available.
+ import.jdk should be unset, or set to jdk home (to use rt.jar)
+ or to jdk repo (to use src/share/classes).
+ Based on the value, if any, set up default values for javac's sourcepath,
+ classpath and bootclasspath. Note: the default values are overridden
+ in the build-bootstrap-classes macro. -->
+
+ <available property="import.jdk.src.dir" value="${import.jdk}/src/share/classes"
+ filepath="${import.jdk}/src/share/classes" file="java/nio/file/Path.java"/>
+ <available property="import.jdk.jar" value="${import.jdk}/jre/lib/rt.jar"
+ ignoresystemclasses="true"
+ classpath="${import.jdk}/jre/lib/rt.jar" classname="java.nio.file.Path"/>
+
+ <condition property="javac.sourcepath" value="${build.genstubs.dir}" else="">
+ <isset property="import.jdk.src.dir"/>
+ </condition>
+
+ <property name="javac.classpath" value=""/>
+
+ <condition property="javac.bootclasspath.opt"
+ value="-Xbootclasspath:${build.classes.dir}:${import.jdk.jar}"
+ else="-Xbootclasspath/p:${build.classes.dir}">
+ <isset property="import.jdk.jar"/>
+ </condition>
+
+ <condition property="exclude.files" value="" else="${require.import.jdk.files}">
+ <isset property="import.jdk"/>
+ </condition>
+
+ <!-- for debugging -->
+ <target name="check-import.jdk">
+ <echo message="import.jdk: ${import.jdk}"/>
+ <echo message="import.jdk.jar: ${import.jdk.jar}"/>
+ <echo message="import.jdk.src.dir: ${import.jdk.src.dir}"/>
+ </target>
<!-- Standard target to build deliverables for JDK build. -->
@@ -108,11 +144,15 @@
<zip file="${dist.lib.dir}/src.zip" basedir="${src.classes.dir}"/>
</target>
- <target name="build-bootstrap-tools" depends="build-bootstrap-javac,build-bootstrap-javadoc,build-bootstrap-doclets,build-bootstrap-javah"/>
+ <target name="build-bootstrap-tools"
+ depends="build-bootstrap-javac,build-bootstrap-javadoc,build-bootstrap-doclets,build-bootstrap-javah"
+ />
- <target name="build-all-tools" depends="build-javac,build-javadoc,build-doclets,build-javah,build-javap,build-apt"/>
+ <target name="build-all-tools"
+ depends="build-javac,build-javadoc,build-doclets,build-javah,build-javap,build-apt"
+ />
- <target name="build-all-classes" depends="build-bootstrap-javac">
+ <target name="build-all-classes" depends="build-bootstrap-javac,-create-import-jdk-stubs">
<build-classes includes="${javac.includes} ${javadoc.includes} ${doclets.includes} ${javah.includes} ${javap.includes} ${apt.includes}"/>
</target>
@@ -197,7 +237,7 @@
<build-bootstrap-tool name="javac"/>
</target>
- <target name="build-classes-javac" depends="build-bootstrap-javac">
+ <target name="build-classes-javac" depends="build-bootstrap-javac,-create-import-jdk-stubs">
<build-classes includes="${javac.includes}"/>
</target>
@@ -379,6 +419,17 @@
<target name="apt" depends="build-apt,jtreg-apt,findbugs-apt"/>
+ <!-- Create import JDK stubs -->
+
+ <target name="-create-import-jdk-stubs" depends="-def-genstubs" if="import.jdk.src.dir">
+ <mkdir dir="${build.genstubs.dir}"/>
+ <genstubs
+ srcdir="${import.jdk.src.dir}" destdir="${build.genstubs.dir}"
+ includes="${import.jdk.stub.files}"
+ fork="true" classpath="${build.toolclasses.dir}:${build.bootstrap.dir}/classes:${ant.home}/lib/ant.jar"
+ />
+ </target>
+
<!-- Check targets -->
<target name="-check-boot.java.home" depends="-def-check">
@@ -446,16 +497,23 @@
<target name="-def-build-classes" depends="-def-pcompile">
<macrodef name="build-classes">
<attribute name="includes"/>
- <attribute name="excludes" default="**/package-info.java"/>
+ <attribute name="excludes" default="${exclude.files} **/package-info.java"/>
<attribute name="classes.dir" default="${build.classes.dir}"/>
<attribute name="gensrc.dir" default="${build.gensrc.dir}"/>
- <attribute name="bootclasspath" default="${build.bootstrap.dir}/classes"/>
+ <attribute name="javac.bootclasspath" default="${build.bootstrap.dir}/classes"/>
+ <attribute name="bootclasspath.opt" default="${javac.bootclasspath.opt}"/>
+ <attribute name="classpath" default="${javac.classpath}"/>
+ <attribute name="sourcepath" default="${javac.sourcepath}"/>
<attribute name="java.home" default="${boot.java.home}"/>
<attribute name="source" default="${javac.source}"/>
<attribute name="target" default="${javac.target}"/>
<attribute name="release" default="${release}"/>
<attribute name="full.version" default="${full.version}"/>
<sequential>
+ <echo level="verbose" message="build-classes: excludes=@{excludes}"/>
+ <echo level="verbose" message="build-classes: bootclasspath.opt=@{bootclasspath.opt}"/>
+ <echo level="verbose" message="build-classes: classpath=@{classpath}"/>
+ <echo level="verbose" message="build-classes: sourcepath=@{sourcepath}"/>
<mkdir dir="@{gensrc.dir}"/>
<mkdir dir="@{classes.dir}"/>
<pcompile srcdir="${src.classes.dir}"
@@ -479,14 +537,17 @@
destdir="@{classes.dir}"
includes="@{includes}"
excludes="@{excludes}"
- sourcepath=""
+ sourcepath="@{sourcepath}"
+ classpath="@{classpath}"
includeAntRuntime="no"
source="@{source}"
target="@{target}"
debug="${javac.debug}"
debuglevel="${javac.debuglevel}">
- <compilerarg value="-J-Xbootclasspath/p:@{bootclasspath}"/>
- <compilerarg value="-Xbootclasspath/p:@{classes.dir}"/>
+ <compilerarg value="-implicit:none"/>
+ <compilerarg value="-Xprefer:source"/>
+ <compilerarg value="-J-Xbootclasspath/p:@{javac.bootclasspath}"/>
+ <compilerarg line="@{bootclasspath.opt}"/>
<compilerarg line="${javac.no.jdk.warnings}"/>
<compilerarg line="${javac.version.opt}"/>
<compilerarg line="${javac.lint.opts}"/>
@@ -526,9 +587,12 @@
target="${boot.javac.target}"
gensrc.dir="${build.bootstrap.dir}/gensrc"
classes.dir="${build.bootstrap.dir}/classes"
- bootclasspath=""
+ javac.bootclasspath=""
+ bootclasspath.opt="-Xbootclasspath/p:${build.bootstrap.dir}/classes"
+ sourcepath=""
release="${bootstrap.release}"
- full.version="${bootstrap.full.version}"/>
+ full.version="${bootstrap.full.version}"
+ excludes="${require.import.jdk.files} **/package-info.java"/>
</presetdef>
</target>
@@ -546,6 +610,20 @@
classpath="${build.toolclasses.dir}/"/>
</target>
+ <target name="-def-genstubs" depends="build-bootstrap-javac">
+ <mkdir dir="${build.toolclasses.dir}"/>
+ <javac fork="true"
+ source="${boot.javac.source}"
+ target="${boot.javac.target}"
+ executable="${boot.java.home}/bin/javac"
+ srcdir="${make.tools.dir}/GenStubs"
+ destdir="${build.toolclasses.dir}/"
+ classpath="${build.bootstrap.dir}/classes:${ant.home}/lib/ant.jar"/>
+ <taskdef name="genstubs"
+ classname="GenStubs$$Ant"
+ classpath="${build.toolclasses.dir}/"/>
+ </target>
+
<target name="-def-javadoc-tool" depends="-check-target.java.home">
<macrodef name="javadoc-tool">
<attribute name="name"/>
@@ -707,7 +785,7 @@
<!-- standard JDK target -->
<target name="sanity"
- description="display settings of congiguration values">
+ description="display settings of configuration values">
<echo level="info">ant.home = ${ant.home}</echo>
<echo level="info">boot.java.home = ${boot.java.home}</echo>
<echo level="info">target.java.home = ${target.java.home}</echo>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/make/tools/GenStubs/GenStubs.java Fri Nov 20 11:18:43 2009 -0800
@@ -0,0 +1,392 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc. 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. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+import java.io.*;
+import java.util.*;
+import javax.tools.JavaFileObject;
+import javax.tools.StandardJavaFileManager;
+import javax.tools.StandardLocation;
+
+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;
+
+
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.util.JavacTask;
+import com.sun.tools.javac.api.JavacTool;
+import com.sun.tools.javac.code.Flags;
+import com.sun.tools.javac.code.TypeTags;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.tree.JCTree.JCBlock;
+import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
+import com.sun.tools.javac.tree.JCTree.JCLiteral;
+import com.sun.tools.javac.tree.JCTree.JCMethodDecl;
+import com.sun.tools.javac.tree.JCTree.JCModifiers;
+import com.sun.tools.javac.tree.JCTree.JCStatement;
+import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
+import com.sun.tools.javac.tree.Pretty;
+import com.sun.tools.javac.tree.TreeTranslator;
+
+/**
+ * Generate stub source files by removing implementation details from input files.
+ *
+ * This is a special purpose stub generator, specific to the needs of generating
+ * stub files for JDK 7 API that are needed to compile langtools files that depend
+ * on that API. The stub generator works by removing as much of the API source code
+ * as possible without affecting the public signature, in order to reduce the
+ * transitive closure of the API being referenced. The resulting stubs can be
+ * put on the langtools sourcepath with -implicit:none to compile the langtools
+ * files that depend on the JDK 7 API.
+ *
+ * Usage:
+ * genstubs -s <outdir> -sourcepath <path> <classnames>
+ *
+ * The specified class names are looked up on the sourcepath, and corresponding
+ * stubs are written to the source output directory.
+ *
+ * Classes are parsed into javac ASTs, then processed with a javac TreeTranslator
+ * to remove implementation details, and written out in the source output directory.
+ * Documentation comments and annotations are removed. Method bodies are removed
+ * and methods are marked native. Private and package-private field definitions
+ * have their initializers replace with 0, 0.0, false, null as appropriate.
+ *
+ * An Ant task, Main$Ant is also provided. 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 <includes> 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 <classpath> 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 GenStubs {
+ static class Fault extends Exception {
+ private static final long serialVersionUID = 0;
+ Fault(String message) {
+ super(message);
+ }
+ Fault(String message, Throwable cause) {
+ super(message);
+ initCause(cause);
+ }
+ }
+
+ public static void main(String[] args) {
+ boolean ok = new GenStubs().run(args);
+ if (!ok)
+ System.exit(1);
+ }
+
+ boolean run(String... args) {
+ File outdir = null;
+ String sourcepath = null;
+ List<String> classes = new ArrayList<String>();
+ for (ListIterator<String> iter = Arrays.asList(args).listIterator(); iter.hasNext(); ) {
+ String arg = iter.next();
+ if (arg.equals("-s") && iter.hasNext())
+ outdir = new File(iter.next());
+ else if (arg.equals("-sourcepath") && iter.hasNext())
+ sourcepath = iter.next();
+ else if (arg.startsWith("-"))
+ throw new IllegalArgumentException(arg);
+ else {
+ classes.add(arg);
+ while (iter.hasNext())
+ classes.add(iter.next());
+ }
+ }
+
+ return run(sourcepath, outdir, classes);
+ }
+
+ boolean run(String sourcepath, File outdir, List<String> classes) {
+ //System.err.println("run: sourcepath:" + sourcepath + " outdir:" + outdir + " classes:" + classes);
+ if (sourcepath == null)
+ throw new IllegalArgumentException("sourcepath not set");
+ if (outdir == null)
+ throw new IllegalArgumentException("source output dir not set");
+
+ JavacTool tool = JavacTool.create();
+ StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);
+
+ try {
+ fm.setLocation(StandardLocation.SOURCE_OUTPUT, Collections.singleton(outdir));
+ fm.setLocation(StandardLocation.SOURCE_PATH, splitPath(sourcepath));
+ List<JavaFileObject> files = new ArrayList<JavaFileObject>();
+ for (String c: classes) {
+ JavaFileObject fo = fm.getJavaFileForInput(
+ StandardLocation.SOURCE_PATH, c, JavaFileObject.Kind.SOURCE);
+ if (fo == null)
+ error("class not found: " + c);
+ else
+ files.add(fo);
+ }
+
+ JavacTask t = tool.getTask(null, fm, null, null, null, files);
+ Iterable<? extends CompilationUnitTree> trees = t.parse();
+ for (CompilationUnitTree tree: trees) {
+ makeStub(fm, tree);
+ }
+ } catch (IOException e) {
+ error("IO error " + e, e);
+ }
+
+ return (errors == 0);
+ }
+
+ void makeStub(StandardJavaFileManager fm, CompilationUnitTree tree) throws IOException {
+ CompilationUnitTree tree2 = new StubMaker().translate(tree);
+
+ String className = fm.inferBinaryName(StandardLocation.SOURCE_PATH, tree.getSourceFile());
+ JavaFileObject fo = fm.getJavaFileForOutput(StandardLocation.SOURCE_OUTPUT,
+ className, JavaFileObject.Kind.SOURCE, null);
+ // System.err.println("Writing " + className + " to " + fo.getName());
+ Writer out = fo.openWriter();
+ try {
+ new Pretty(out, true).printExpr((JCTree) tree2);
+ } finally {
+ out.close();
+ }
+ }
+
+ List<File> splitPath(String path) {
+ List<File> list = new ArrayList<File>();
+ for (String p: path.split(File.pathSeparator)) {
+ if (p.length() > 0)
+ list.add(new File(p));
+ }
+ return list;
+ }
+
+ void error(String message) {
+ System.err.println(message);
+ errors++;
+ }
+
+ void error(String message, Throwable cause) {
+ error(message);
+ }
+
+ int errors;
+
+ class StubMaker extends TreeTranslator {
+ CompilationUnitTree translate(CompilationUnitTree tree) {
+ return super.translate((JCCompilationUnit) tree);
+ }
+
+ /**
+ * compilation units: remove javadoc comments
+ * -- required, in order to remove @deprecated tags, since we
+ * (separately) remove all annotations, including @Deprecated
+ */
+ public void visitTopLevel(JCCompilationUnit tree) {
+ super.visitTopLevel(tree);
+ tree.docComments = Collections.emptyMap();
+ }
+
+ /**
+ * methods: remove method bodies, make methods native
+ */
+ @Override
+ public void visitMethodDef(JCMethodDecl tree) {
+ tree.mods = translate(tree.mods);
+ tree.restype = translate(tree.restype);
+ tree.typarams = translateTypeParams(tree.typarams);
+ tree.params = translateVarDefs(tree.params);
+ tree.thrown = translate(tree.thrown);
+ if (tree.restype != null && tree.body != null) {
+ tree.mods.flags |= Flags.NATIVE;
+ tree.body = null;
+ }
+ result = tree;
+ }
+
+ /**
+ * modifiers: remove annotations
+ */
+ @Override
+ public void visitModifiers(JCModifiers tree) {
+ tree.annotations = com.sun.tools.javac.util.List.nil();
+ result = tree;
+ }
+
+ /**
+ * field definitions: replace initializers with 0, 0.0, false etc
+ * when possible -- i.e. leave public, protected initializers alone
+ */
+ @Override
+ public void visitVarDef(JCVariableDecl tree) {
+ tree.mods = translate(tree.mods);
+ tree.vartype = translate(tree.vartype);
+ if (tree.init != null) {
+ if ((tree.mods.flags & (Flags.PUBLIC | Flags.PROTECTED)) != 0)
+ tree.init = translate(tree.init);
+ else {
+ String t = tree.vartype.toString();
+ if (t.equals("boolean"))
+ tree.init = new JCLiteral(TypeTags.BOOLEAN, 0) { };
+ else if (t.equals("byte"))
+ tree.init = new JCLiteral(TypeTags.BYTE, 0) { };
+ else if (t.equals("char"))
+ tree.init = new JCLiteral(TypeTags.CHAR, 0) { };
+ else if (t.equals("double"))
+ tree.init = new JCLiteral(TypeTags.DOUBLE, 0.d) { };
+ else if (t.equals("float"))
+ tree.init = new JCLiteral(TypeTags.FLOAT, 0.f) { };
+ else if (t.equals("int"))
+ tree.init = new JCLiteral(TypeTags.INT, 0) { };
+ else if (t.equals("long"))
+ tree.init = new JCLiteral(TypeTags.LONG, 0) { };
+ else if (t.equals("short"))
+ tree.init = new JCLiteral(TypeTags.SHORT, 0) { };
+ else
+ tree.init = new JCLiteral(TypeTags.BOT, null) { };
+ }
+ }
+ result = tree;
+ }
+ }
+
+ //---------- Ant Invocation ------------------------------------------------
+
+ public static class Ant 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);
+ }
+
+ 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<String> classNames = new ArrayList<String>();
+ 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<String> cmd = new ArrayList<String>();
+ 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();
+ BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
+ try {
+ String line;
+ while ((line = in.readLine()) != null)
+ System.out.println(line);
+ } finally {
+ in.close();
+ }
+ int rc = p.waitFor();
+ if (rc != 0)
+ throw new BuildException("genstubs failed");
+ } catch (IOException e) {
+ throw new BuildException("genstubs failed", e);
+ } catch (InterruptedException e) {
+ throw new BuildException("genstubs failed", e);
+ }
+ }
+ }
+
+ String[] filter(File srcDir, File destDir, String[] files) {
+ List<String> results = new ArrayList<String>();
+ 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()]);
+ }
+ }
+}