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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
/*
* @test
* @bug 6403465
* @summary javac should defer diagnostics until it can be determined they are persistent
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.file
* jdk.compiler/com.sun.tools.javac.util
*/
import java.io.*;
import java.util.*;
import javax.annotation.processing.*;
import javax.lang.model.*;
import javax.lang.model.element.TypeElement;
import javax.tools.*;
import com.sun.source.util.JavacTask;
import com.sun.tools.javac.api.ClientCodeWrapper;
import com.sun.tools.javac.api.JavacTool;
import com.sun.tools.javac.util.JCDiagnostic;
import static com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag.*;
public class TestSuppression {
public static void main(String... args) throws Exception {
new TestSuppression().run(args);
}
enum WarningKind { NO, YES };
String[] cases = {
// missing class C
"class X { C c; }",
"class X { C foo() { return null; } }",
"class X { void foo(C c) { } }",
"class X extends C { }",
"class X<T extends C> { }",
// missing interface I
"class X implements I { }",
"interface X extends I { }",
// missing exception E
"class X { void m() throws E { } }",
// missing method m
"class X extends C { int i = m(); }",
// missing field f
"class X extends C { int i = f; }"
};
void run(String... args) throws Exception {
for (String c: cases) {
for (WarningKind wk: WarningKind.values()) {
for (int g = 1; g <= 3; g++) {
try {
test(c, wk, g);
} catch (Throwable t) {
error("caught: " + t);
}
if (errors > 0) throw new AssertionError();
}
}
}
System.err.println(count + " test cases");
if (errors > 0)
throw new Exception(errors + " errors occurred");
}
void test(String src, WarningKind wk, int gen) throws Exception {
count++;
System.err.println("Test " + count + ": wk:" + wk + " gen:" + gen + " src:" +src);
File testDir = new File("test" + count);
File srcDir = createDir(testDir, "src");
File gensrcDir = createDir(testDir, "gensrc");
File classesDir = createDir(testDir, "classes");
File x = writeFile(new File(srcDir, "X.java"), src);
DiagListener dl = new DiagListener();
JavacTool tool = JavacTool.create();
try (StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, null)) {
fm.setLocation(StandardLocation.CLASS_PATH,
Arrays.asList(classesDir, new File(System.getProperty("test.classes"))));
fm.setLocation(StandardLocation.CLASS_OUTPUT, Collections.singleton(classesDir));
fm.setLocation(StandardLocation.SOURCE_OUTPUT, Collections.singleton(gensrcDir));
List<String> args = new ArrayList<String>();
// args.add("-XprintProcessorInfo");
args.add("-XprintRounds");
args.add("-Agen=" + gen);
if (wk == WarningKind.YES)
args.add("-Xlint:serial");
Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(x);
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
JavacTask task = tool.getTask(pw, fm, dl, args, null, files);
task.setProcessors(Arrays.asList(new AnnoProc()));
boolean ok = task.call();
pw.close();
System.err.println("ok:" + ok + " diags:" + dl.counts);
if (sw.toString().length() > 0) {
System.err.println("output:\n" + sw.toString());
}
for (Diagnostic.Kind dk: Diagnostic.Kind.values()) {
Integer v = dl.counts.get(dk);
int found = (v == null) ? 0 : v;
int expect = (dk == Diagnostic.Kind.WARNING && wk == WarningKind.YES) ? gen : 0;
if (found != expect) {
error("Unexpected value for " + dk + ": expected: " + expect + " found: " + found);
}
}
System.err.println();
}
}
File createDir(File parent, String name) {
File dir = new File(parent, name);
dir.mkdirs();
return dir;
}
File writeFile(File f, String content) throws IOException {
FileWriter out = new FileWriter(f);
try {
out.write(content);
} finally {
out.close();
}
return f;
}
<T> void add(List<T> list, T... values) {
for (T v: values)
list.add(v);
}
void error(String msg) {
System.err.println("Error: " + msg);
errors++;
}
int count;
int errors;
static class DiagListener implements DiagnosticListener<JavaFileObject> {
int total;
Map<Diagnostic.Kind,Integer> counts = new TreeMap<Diagnostic.Kind,Integer>();
public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
System.err.println((++total) + ": "
+ "resolveError:" + isResolveError(unwrap(diagnostic)) + "\n"
+ diagnostic);
Diagnostic.Kind dk = diagnostic.getKind();
Integer c = counts.get(dk);
counts.put(dk, (c == null ? 1 : c + 1));
}
private static boolean isResolveError(JCDiagnostic d) {
return d.isFlagSet(RESOLVE_ERROR);
}
private JCDiagnostic unwrap(Diagnostic<? extends JavaFileObject> diagnostic) {
if (diagnostic instanceof JCDiagnostic)
return (JCDiagnostic) diagnostic;
if (diagnostic instanceof ClientCodeWrapper.DiagnosticSourceUnwrapper)
return ((ClientCodeWrapper.DiagnosticSourceUnwrapper)diagnostic).d;
throw new IllegalArgumentException();
}
}
@SupportedAnnotationTypes("*")
@SupportedOptions("gen")
public static class AnnoProc extends AbstractProcessor {
Filer f;
Messager m;
int gen;
@Override
public void init(ProcessingEnvironment processingEnv) {
f = processingEnv.getFiler();
m = processingEnv.getMessager();
Map<String,String> options = processingEnv.getOptions();
gen = Integer.parseInt(options.get("gen"));
}
@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
round++;
if (round < gen)
writeSource("Dummy" + round, "class Dummy" + round + " extends java.util.ArrayList{ }");
else if (round == gen) {
writeSource("C", "class C { int f; int m() { return 0; } }");
writeSource("I", "interface I { }");
writeSource("E", "class E extends Exception { }");
}
return true;
}
@Override
public SourceVersion getSupportedSourceVersion() {
return SourceVersion.latest();
}
private void writeSource(String name, String text) {
try {
JavaFileObject fo = f.createSourceFile(name);
Writer out = fo.openWriter();
out.write(text);
out.close();
} catch (IOException e) {
m.printMessage(Diagnostic.Kind.ERROR, e.toString());
}
}
int round = 0;
}
}