/*
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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).
*
* 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.
*
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*/
/*
* @test
* @bug 7086601
* @summary Error message bug: cause for method mismatch is 'null'
* @modules jdk.compiler
*/
import com.sun.source.util.JavacTask;
import java.net.URI;
import java.util.Arrays;
import java.util.ArrayList;
import javax.tools.Diagnostic;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
import javax.tools.StandardJavaFileManager;
import javax.tools.ToolProvider;
public class T7086601b {
static int checkCount = 0;
enum TypeKind {
STRING("String", false),
INTEGER("Integer", false),
NUMBER("Number", false),
SERIALIZABLE("java.io.Serializable", true),
CLONEABLE("Cloneable", true),
X("X", false),
Y("Y", false),
Z("Z", false);
String typeStr;
boolean isInterface;
private TypeKind(String typeStr, boolean isInterface) {
this.typeStr = typeStr;
this.isInterface = isInterface;
}
boolean isSubtypeof(TypeKind other) {
return (this == INTEGER && other == NUMBER ||
this == Z && other == Y ||
this == other);
}
}
enum MethodCallKind {
ARITY_ONE("m(a1);", 1),
ARITY_TWO("m(a1, a2);", 2),
ARITY_THREE("m(a1, a2, a3);", 3);
String invokeString;
int arity;
private MethodCallKind(String invokeString, int arity) {
this.invokeString = invokeString;
this.arity = arity;
}
}
public static void main(String... args) throws Exception {
//create default shared JavaCompiler - reused across multiple compilations
JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
try (StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null)) {
for (TypeKind a1 : TypeKind.values()) {
for (TypeKind a2 : TypeKind.values()) {
for (TypeKind a3 : TypeKind.values()) {
for (MethodCallKind mck : MethodCallKind.values()) {
new T7086601b(a1, a2, a3, mck).run(comp, fm);
}
}
}
}
System.out.println("Total check executed: " + checkCount);
}
}
TypeKind a1;
TypeKind a2;
TypeKind a3;
MethodCallKind mck;
JavaSource source;
DiagnosticChecker diagChecker;
T7086601b(TypeKind a1, TypeKind a2, TypeKind a3, MethodCallKind mck) {
this.a1 = a1;
this.a2 = a2;
this.a3 = a3;
this.mck = mck;
this.source = new JavaSource();
this.diagChecker = new DiagnosticChecker();
}
class JavaSource extends SimpleJavaFileObject {
final String bodyTemplate = "import java.util.List;\n"+
"class Test {\n" +
" <Z> void m(List<? super Z> l1) { }\n" +
" <Z> void m(List<? super Z> l1, List<? super Z> l2) { }\n" +
" <Z> void m(List<? super Z> l1, List<? super Z> l2, List<? super Z> l3) { }\n" +
" <X,Y,Z extends Y> void test(List<#A1> a1, List<#A2> a2, List<#A3> a3) { #MC } }";
String source;
public JavaSource() {
super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
source = bodyTemplate.replace("#A1", a1.typeStr)
.replace("#A2", a2.typeStr).replace("#A3", a3.typeStr)
.replace("#MC", mck.invokeString);
}
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return source;
}
}
void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
null, null, Arrays.asList(source));
try {
ct.analyze();
} catch (Throwable ex) {
throw new AssertionError("Error thrown when compiling the following code:\n" + source.getCharContent(true));
}
check();
}
void check() {
checkCount++;
boolean errorExpected = false;
if (mck.arity > 1) {
TypeKind[] argtypes = { a1, a2, a3 };
ArrayList<TypeKind> classes = new ArrayList<>();
for (int i = 0 ; i < mck.arity ; i ++ ) {
if (!argtypes[i].isInterface) {
classes.add(argtypes[i]);
}
}
boolean glb_exists = true;
for (TypeKind arg_i : classes) {
glb_exists = true;
for (TypeKind arg_j : classes) {
if (!arg_i.isSubtypeof(arg_j)) {
glb_exists = false;
break;
}
}
if (glb_exists) break;
}
errorExpected = !glb_exists;
}
if (errorExpected != diagChecker.errorFound) {
throw new Error("invalid diagnostics for source:\n" +
source.getCharContent(true) +
"\nFound error: " + diagChecker.errorFound +
"\nExpected error: " + errorExpected);
}
}
static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
boolean errorFound;
public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
errorFound = true;
}
}
}
}