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/*
* Copyright (c) 2018, 2024, 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.
*
* 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.
*/
/**
* @test
* @bug 8193717
* @summary Check that code with a lot named imports can compile.
* @library /tools/lib
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.main
* jdk.jdeps/com.sun.tools.javap
* @build toolbox.ToolBox toolbox.JavapTask
* @run main T8193717
*/
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.constant.ClassDesc;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import javax.tools.ForwardingJavaFileManager;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileManager;
import javax.tools.JavaFileObject;
import javax.tools.JavaFileObject.Kind;
import javax.tools.SimpleJavaFileObject;
import javax.tools.StandardJavaFileManager;
import javax.tools.StandardLocation;
import javax.tools.ToolProvider;
import java.lang.classfile.*;
import toolbox.JavacTask;
import toolbox.ToolBox;
public class T8193717 {
public static void main(String... args) throws IOException {
new T8193717().run();
}
private static final int CLASSES = 50000;
private void run() throws IOException {
StringBuilder imports = new StringBuilder();
StringBuilder use = new StringBuilder();
for (int c = 0; c < CLASSES; c++) {
String simpleName = getSimpleName(c);
String pack = "p";
imports.append("import " + pack + "." + simpleName + ";\n");
use.append(simpleName + " " + simpleName + ";\n");
}
String source = imports.toString() + "public class T {\n" + use.toString() + "}";
ToolBox tb = new ToolBox();
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
try (StandardJavaFileManager fm = compiler.getStandardFileManager(null, null, null)) {
fm.setLocationFromPaths(StandardLocation.CLASS_OUTPUT, List.of(Paths.get(".")));
new JavacTask(tb).sources(source)
.options("-XDshould-stop.ifError=ATTR",
"-XDshould-stop.ifNoError=ATTR") //the source is too big for a classfile
.fileManager(new TestJFM(fm))
.run();
}
}
private static String getSimpleName(int c) {
return "T" + String.format("%0" + (int) Math.ceil(Math.log10(CLASSES)) + "d", c);
}
private byte[] generateClassFile(String name) throws IOException {
byte[] bytes = ClassFile.of().build(ClassDesc.of(name), classBuilder -> {
classBuilder.withSuperclass(ClassDesc.ofInternalName("java/lang/Object"))
.withVersion(51, 0)
.withFlags(ClassFile.ACC_ABSTRACT | ClassFile.ACC_INTERFACE | ClassFile.ACC_PUBLIC);
});
ByteArrayOutputStream baos = new ByteArrayOutputStream();
baos.write(bytes);
return baos.toByteArray();
}
final class TestJFM extends ForwardingJavaFileManager<JavaFileManager> {
public TestJFM(JavaFileManager fileManager) {
super(fileManager);
}
@Override
public Iterable<JavaFileObject> list(Location location, String packageName,
Set<Kind> kinds, boolean recurse) throws IOException {
if (location == StandardLocation.CLASS_PATH) {
if (packageName.equals("p")) {
try {
List<JavaFileObject> result = new ArrayList<>(CLASSES);
for (int c = 0; c < CLASSES; c++) {
result.add(new TestJFO("p." + getSimpleName(c)));
}
return result;
} catch (URISyntaxException ex) {
throw new IllegalStateException(ex);
}
}
}
return super.list(location, packageName, kinds, recurse);
}
@Override
public String inferBinaryName(Location location, JavaFileObject file) {
if (file instanceof TestJFO) {
return ((TestJFO) file).name;
}
return super.inferBinaryName(location, file);
}
private class TestJFO extends SimpleJavaFileObject {
private final String name;
public TestJFO(String name) throws URISyntaxException {
super(new URI("mem://" + name.replace(".", "/") + ".class"), Kind.CLASS);
this.name = name;
}
@Override
public InputStream openInputStream() throws IOException {
return new ByteArrayInputStream(generateClassFile(name));
}
}
}
}
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