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/*
* Copyright (c) 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
* @summary Check if error is thrown if annotation array exceeds limit
* @library /tools/lib
* @run main ParameterArrayLimit
*/
import java.io.BufferedWriter;
import java.io.IOException;
import java.net.URI;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.text.MessageFormat;
import java.util.Collections;
import java.util.List;
import javax.tools.*;
import com.sun.source.util.JavacTask;
public class ParameterArrayLimit {
public static void main(String[] args) throws IOException {
int[] values = new int[]{65536, 65537, 512000};
String[] retPolicies = {"RUNTIME", "CLASS"};
for (var value : values) {
Path tmpDir = Paths.get(System.getProperty("java.io.tmpdir"));
for (String retPolicy : retPolicies) {
String className = MessageFormat.format("ClassAnnotationWithLength_{0,number,#}_{1}.java",
value,
retPolicy);
Path out = tmpDir.resolve(className);
createAnnotationFile(out, value, retPolicy, false);
checkParamArrayWarning(className, out);
}
for (String retPolicy : retPolicies) {
String className = MessageFormat.format("TypeAnnotationWithLength_{0,number,#}_{1}.java",
value,
retPolicy);
Path out = tmpDir.resolve(className);
createAnnotationFile(out, value, retPolicy, true);
checkParamArrayWarning(className, out);
}
}
}
private static void checkParamArrayWarning(String className, Path out) throws IOException {
JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler();
DiagnosticCollector<JavaFileObject> d = new DiagnosticCollector<>();
JavacTask task = (JavacTask) javaCompiler.getTask(
null,
null,
d,
null,
null,
Collections.singletonList(
SimpleJavaFileObject.forSource(
URI.create("myfo:/" + className),
Files.readString(out)
)));
task.call();
List<Diagnostic<? extends JavaFileObject>> diagnosticList = d.getDiagnostics();
if (diagnosticList.isEmpty()) {
throw new RuntimeException("No diagnostic found");
}
for (Diagnostic<? extends JavaFileObject> diagnostic : diagnosticList) {
if (!(diagnostic.getKind() == Diagnostic.Kind.ERROR
&& diagnostic.getCode()
.equals("compiler.err.annotation.array.too.large"))) {
throw new RuntimeException("Unexpected diagnostic: " + diagnostic.getMessage(null));
}
}
}
private static void createAnnotationFile(Path out, int value, String retPolicy, boolean isTypeAnnotation) throws IOException {
StringBuilder sb = new StringBuilder();
if (isTypeAnnotation) {
sb.append(MessageFormat.format("""
import java.lang.annotation.*;
@Retention(RetentionPolicy.{0})
@Target(ElementType.TYPE_USE)
@interface TypeAnno '{'
long[] arr();
'}'
""", retPolicy));
sb.append(MessageFormat.format("""
public class TypeAnnotationWithLength_{0,number,#}_{1}'{'
@TypeAnno(arr = '{'
""", value, retPolicy));
} else {
sb.append(MessageFormat.format("""
import java.lang.annotation.*;
@Retention(RetentionPolicy.{0})
@interface MyCustomAnno '{'
String value() default "default value";
long[] arr();
int count() default 0;
'}'
""", retPolicy));
sb.append(MessageFormat.format("""
public class ClassAnnotationWithLength_{0,number,#}_{1}'{'
@MyCustomAnno(value = "custom", count = 42, arr = '{'
""", value, retPolicy));
}
sb.append("-1,".repeat(Math.max(0, value - 1)));
sb.append("-1})");
sb.append("""
static int x = 3;
public void myAnnotatedMethod() { }
}
""");
try (BufferedWriter bufferedWriter = Files.newBufferedWriter(out)) {
bufferedWriter.write(sb.toString());
}
}
}
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