/*
* Copyright ( c ) 2011 , 2021 , 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 7031108
* @ summary NPE in javac . jvm . ClassReader . findMethod in PackageElement . enclosedElements from AP in incr build
* @ library / tools / javac / lib
* @ modules java . compiler
* jdk . compiler
* @ build JavacTestingAbstractProcessor T7031108
* @ run main T7031108
*/
import java.io.*;
import java.net.*;
import java.util.*;
import javax.annotation.processing.*;
import javax.lang.model.element.*;
import javax.tools.*;
import javax.tools.JavaCompiler.CompilationTask;
public class T7031108 extends JavacTestingAbstractProcessor {
public static void main(String... args) throws Exception {
new T7031108().run();
}
/* Class containing a local class definition;
* compiled class file will have an EnclosedMethod attribute .
*/
static final JavaSource pC =
new JavaSource("p/C.java" ,
"package p;\n"
+ "class C {\n"
+ " void m() {\n"
+ " new Runnable() {\n"
+ " public void run() {\n"
+ " new Runnable() {\n"
+ " public void run() { }\n"
+ " };\n"
+ " }\n"
+ " };\n"
+ " }\n"
+ "}" );
private static final String PACKAGE_CONTENT_ERROR = "package does not contain C" ;
/* Dummy source file to compile while running anno processor. */
static final JavaSource dummy =
new JavaSource("Dummy.java" ,
"class Dummy { }" );
void run() throws Exception {
JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
try (StandardJavaFileManager fm = comp.getStandardFileManager(null , null , null )) {
// step 1: compile test classes
File cwd = new File("." );
fm.setLocation(StandardLocation.CLASS_OUTPUT, Arrays.asList(cwd));
compile(comp, fm, null , null , pC);
// step 2: verify functioning of processor
fm.setLocation(StandardLocation.ANNOTATION_PROCESSOR_PATH,
fm.getLocation(StandardLocation.CLASS_PATH));
fm.setLocation(StandardLocation.CLASS_PATH, Arrays.asList(cwd));
compile(comp, fm, null , getClass().getName(), dummy);
File pC_class = new File(new File("p" ), "C.class" );
pC_class.delete ();
DiagnosticCollector<JavaFileObject> dc = new DiagnosticCollector<JavaFileObject>();
compile(comp, fm, dc, getClass().getName(), dummy);
List<Diagnostic<? extends JavaFileObject>> diags =dc.getDiagnostics();
System.err.println(diags);
switch (diags.size()) {
case 0 :
throw new Exception("no diagnostics received" );
case 1 :
String code = diags.get(0 ).getCode();
String expect = "compiler.err.proc.messager" ;
if (!expect.equals(code))
throw new Exception("unexpected diag code: " + code
+ ", expected: " + expect);
String message = diags.get(0 ).getMessage(null );
if (!PACKAGE_CONTENT_ERROR.equals(message)) {
throw new Exception("unexpected diag message: " + code
+ ", expected: " + PACKAGE_CONTENT_ERROR);
}
break ;
default :
throw new Exception("unexpected diags received" );
}
}
}
void compile(JavaCompiler comp, JavaFileManager fm,
DiagnosticListener<JavaFileObject> dl,
String processor, JavaFileObject... files) throws Exception {
System.err.println("compile processor:" + processor + ", files:" + Arrays.asList(files));
List<String> opts = new ArrayList<String>();
if (processor != null ) {
// opts.add("-verbose");
opts.addAll(Arrays.asList("-processor" , processor));
}
CompilationTask task = comp.getTask(null , fm, dl, opts, null , Arrays.asList(files));
boolean ok = task.call();
if (dl == null && !ok)
throw new Exception("compilation failed" );
}
static class JavaSource extends SimpleJavaFileObject {
JavaSource(String name, String text) {
super (URI.create("js://" + name), JavaFileObject.Kind.SOURCE);
this .text = text;
}
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return text;
}
final String text;
}
// annotation processor method
@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
if (!roundEnv.processingOver()) {
PackageElement p = elements.getPackageElement("p" );
List<? extends Element> elems = p.getEnclosedElements();
System.err.println("contents of package p: " + elems);
if (elems.size() != 1 || !elems.get(0 ).getSimpleName().contentEquals("C" )) {
messager.printError(PACKAGE_CONTENT_ERROR);
}
}
return true ;
}
}
Messung V0.5 in Prozent C=95 H=91 G=92
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