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/*
* Copyright (c) 2023, 2025, 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 8301580 8322159 8333107 8332230 8338678
* @summary Verify error recovery w.r.t. Attr
* @library /tools/lib
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.main
* @build toolbox.ToolBox toolbox.JavacTask
* @run main AttrRecovery
*/
import com.sun.source.tree.VariableTree;
import com.sun.source.util.TaskEvent;
import com.sun.source.util.TaskListener;
import com.sun.source.util.TreePathScanner;
import com.sun.source.util.Trees;
import java.nio.file.Path;
import java.util.IdentityHashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.stream.Collectors;
import javax.lang.model.element.Element;
import javax.lang.model.element.VariableElement;
import javax.lang.model.type.DeclaredType;
import javax.lang.model.type.TypeKind;
import javax.lang.model.type.TypeMirror;
import javax.tools.Diagnostic;
import toolbox.JavacTask;
import toolbox.Task.Expect;
import toolbox.Task.OutputKind;
import toolbox.TestRunner;
import toolbox.ToolBox;
public class AttrRecovery extends TestRunner {
ToolBox tb;
public AttrRecovery() {
super(System.err);
tb = new ToolBox();
}
public static void main(String[] args) throws Exception {
AttrRecovery t = new AttrRecovery();
t.runTests();
}
@Test
public void testFlowExits() throws Exception {
String code = """
class C {
void build
{
return ;
}
}
""";
Path curPath = Path.of(".");
List<String> actual = new JavacTask(tb)
.options("-XDrawDiagnostics", "-XDdev", "-XDshould-stop.at=FLOW")
.sources(code)
.outdir(curPath)
.run(Expect.FAIL)
.getOutputLines(OutputKind.DIRECT);
List<String> expected = List.of(
"C.java:3:5: compiler.err.expected: '('",
"C.java:4:9: compiler.err.ret.outside.meth",
"2 errors"
);
if (!Objects.equals(actual, expected)) {
error("Expected: " + expected + ", but got: " + actual);
}
}
@Test
public void testX() throws Exception {
String code = """
public class C {
public C() {
Undefined.method();
undefined1();
Runnable r = this::undefined2;
overridable(this); //to verify ThisEscapeAnalyzer has been run
}
public void overridable(C c) {}
}
""";
Path curPath = Path.of(".");
List<String> actual = new JavacTask(tb)
.options("-XDrawDiagnostics", "-XDdev",
"-XDshould-stop.at=WARN", "-Xlint:this-escape")
.sources(code)
.outdir(curPath)
.run(Expect.FAIL)
.writeAll()
.getOutputLines(OutputKind.DIRECT);
List<String> expected = List.of(
"C.java:3:9: compiler.err.cant.resolve.location: kindname.variable, Undefined, , , (compiler.misc.location: kindname.class, C, null)",
"C.java:4:9: compiler.err.cant.resolve.location.args: kindname.method, undefined1, , , (compiler.misc.location: kindname.class, C, null)",
"C.java:5:22: compiler.err.invalid.mref: kindname.method, (compiler.misc.cant.resolve.location.args: kindname.method, undefined2, , , (compiler.misc.location: kindname.class, C, null))",
"C.java:6:20: compiler.warn.possible.this.escape",
"3 errors",
"1 warning"
);
if (!Objects.equals(actual, expected)) {
error("Expected: " + expected + ", but got: " + actual);
}
}
@Test //JDK-8332230
public void testAnnotationsInErroneousTree1() throws Exception {
String code = """
package p;
public class C {
static int v;
public void t() {
//not a statement expression,
//will be wrapped in an erroneous tree:
p.@Ann C.v;
}
@interface Ann {}
}
""";
Path curPath = Path.of(".");
List<String> actual = new JavacTask(tb)
.options("-XDrawDiagnostics", "-XDdev", "-XDshould-stop.at=FLOW")
.sources(code)
.outdir(curPath)
.run(Expect.FAIL)
.writeAll()
.getOutputLines(OutputKind.DIRECT);
List<String> expected = List.of(
"C.java:7:17: compiler.err.not.stmt",
"1 error"
);
if (!Objects.equals(actual, expected)) {
error("Expected: " + expected + ", but got: " + actual);
}
}
@Test //JDK-8333107
public void testNestedLambda() throws Exception {
String code = """
public class Dummy {
private void main() {
Stream l = null;
l.map(a -> {
l.map(b -> {
return null;
});
l.map(new FI() {
public String convert(String s) {
return null;
}
});
class Local {}
});
}
public interface Stream {
public void map(FI fi);
}
public interface FI {
public String convert(String s);
}
}
""";
Path curPath = Path.of(".");
List<String> actual = new JavacTask(tb)
.options("-XDrawDiagnostics", "-XDdev",
"-XDshould-stop.at=FLOW")
.sources(code)
.outdir(curPath)
.run(Expect.FAIL)
.writeAll()
.getOutputLines(OutputKind.DIRECT);
List<String> expected = List.of(
"Dummy.java:4:10: compiler.err.cant.apply.symbol: kindname.method, map, Dummy.FI, @15, kindname.interface, Dummy.Stream, (compiler.misc.no.conforming.assignment.exists: (compiler.misc.incompatible.ret.type.in.lambda: (compiler.misc.missing.ret.val: java.lang.String)))",
"1 error"
);
if (!Objects.equals(actual, expected)) {
error("Expected: " + expected + ", but got: " + actual);
}
}
@Test
public void testErroneousTarget() throws Exception {
String code = """
public class C {
public Undefined g(Undefined u) {
return switch (0) {
default -> u;
};
}
}
""";
Path curPath = Path.of(".");
List<String> actual = new JavacTask(tb)
.options("-XDrawDiagnostics")
.sources(code)
.outdir(curPath)
.run(Expect.FAIL, 1)
.writeAll()
.getOutputLines(OutputKind.DIRECT);
List<String> expected = List.of(
"C.java:2:24: compiler.err.cant.resolve.location: kindname.class, Undefined, , , (compiler.misc.location: kindname.class, C, null)",
"C.java:2:12: compiler.err.cant.resolve.location: kindname.class, Undefined, , , (compiler.misc.location: kindname.class, C, null)",
"2 errors"
);
if (!Objects.equals(actual, expected)) {
error("Expected: " + expected + ", but got: " + actual);
}
}
@Test
public void testParameterizedErroneousType() throws Exception {
String code = """
public class C {
Undefined1<Undefined2, Undefined3> variable1;
}
""";
Path curPath = Path.of(".");
List<String> actual = new JavacTask(tb)
.options("-XDrawDiagnostics")
.sources(code)
.outdir(curPath)
.callback(task -> {
task.addTaskListener(new TaskListener() {
@Override
public void finished(TaskEvent e) {
Trees trees = Trees.instance(task);
if (e.getKind() == TaskEvent.Kind.ANALYZE) {
new TreePathScanner<Void, Void>() {
@Override
public Void visitVariable(VariableTree tree, Void p) {
VariableElement var = (VariableElement) trees.getElement(getCurrentPath());
trees.printMessage(Diagnostic.Kind.NOTE, type2String(var.asType()), tree, e.getCompilationUnit());
return super.visitVariable(tree, p);
}
}.scan(e.getCompilationUnit(), null);
}
}
Map<Element, Integer> identityRename = new IdentityHashMap<>();
String type2String(TypeMirror type) {
StringBuilder result = new StringBuilder();
result.append(type.getKind());
result.append(":");
result.append(type.toString());
if (type.getKind() == TypeKind.DECLARED ||
type.getKind() == TypeKind.ERROR) {
DeclaredType dt = (DeclaredType) type;
Element el = task.getTypes().asElement(dt);
result.append(":");
result.append(el.toString());
if (!dt.getTypeArguments().isEmpty()) {
result.append(dt.getTypeArguments()
.stream()
.map(tm -> type2String(tm))
.collect(Collectors.joining(", ", "<", ">")));
}
} else {
throw new AssertionError(type.getKind().name());
}
return result.toString();
}
});
})
.run(Expect.FAIL)
.writeAll()
.getOutputLines(OutputKind.DIRECT);
List<String> expected = List.of(
"C.java:2:5: compiler.err.cant.resolve.location: kindname.class, Undefined1, , , (compiler.misc.location: kindname.class, C, null)",
"C.java:2:16: compiler.err.cant.resolve.location: kindname.class, Undefined2, , , (compiler.misc.location: kindname.class, C, null)",
"C.java:2:28: compiler.err.cant.resolve.location: kindname.class, Undefined3, , , (compiler.misc.location: kindname.class, C, null)",
"C.java:2:40: compiler.note.proc.messager: ERROR:Undefined1<Undefined2,Undefined3>:Undefined1<ERROR:Undefined2:Undefined2, ERROR:Undefined3:Undefined3>",
"3 errors"
);
if (!Objects.equals(actual, expected)) {
error("Expected: " + expected + ", but got: " + actual);
}
}
}
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