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/*
* Copyright (c) 2013, 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 8013576
* @summary Add stat support to LambdaToMethod
* @library ../lib
* @build JavacTestingAbstractThreadedTest
* @run main/othervm TestLambdaToMethodStats
*/
// use /othervm to avoid jtreg timeout issues (CODETOOLS-7900047)
// see JDK-8006746
import java.net.URI;
import java.util.Arrays;
import javax.tools.Diagnostic;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
import com.sun.source.util.JavacTask;
import com.sun.tools.javac.api.ClientCodeWrapper;
import com.sun.tools.javac.util.JCDiagnostic;
public class TestLambdaToMethodStats
extends JavacTestingAbstractThreadedTest
implements Runnable {
enum ExprKind {
LAMBDA("()->null"),
MREF1("this::g"),
MREF2("this::h");
String exprStr;
ExprKind(String exprStr) {
this.exprStr = exprStr;
}
}
enum TargetKind {
IMPLICIT(""),
SERIALIZABLE("(A & java.io.Serializable)");
String targetStr;
TargetKind(String targetStr) {
this.targetStr = targetStr;
}
}
public static void main(String... args) throws Exception {
for (ExprKind ek : ExprKind.values()) {
for (TargetKind tk : TargetKind.values()) {
pool.execute(new TestLambdaToMethodStats(ek, tk));
}
}
checkAfterExec(true);
}
ExprKind ek;
TargetKind tk;
JavaSource source;
DiagnosticChecker diagChecker;
TestLambdaToMethodStats(ExprKind ek, TargetKind tk) {
this.ek = ek;
this.tk = tk;
this.source = new JavaSource();
this.diagChecker = new DiagnosticChecker();
}
class JavaSource extends SimpleJavaFileObject {
String template = "interface A {\n" +
" Object o();\n" +
"}\n" +
"class Test {\n" +
" A a = #C#E;\n" +
" Object g() { return null; }\n" +
" Object h(Object... o) { return null; }\n" +
"}";
String source;
public JavaSource() {
super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
source = template.replaceAll("#E", ek.exprStr)
.replaceAll("#C", tk.targetStr);
}
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return source;
}
}
public void run() {
JavacTask ct = (JavacTask)comp.getTask(null, fm.get(), diagChecker,
Arrays.asList("-XDdumpLambdaToMethodStats"),
null, Arrays.asList(source));
try {
ct.generate();
} catch (Throwable ex) {
throw new
AssertionError("Error thron when analyzing the following source:\n" +
source.getCharContent(true));
}
check();
}
void check() {
checkCount.incrementAndGet();
boolean error = diagChecker.lambda !=
(ek == ExprKind.LAMBDA);
error |= diagChecker.bridge !=
(ek == ExprKind.MREF2);
error |= diagChecker.altMetafactory !=
(tk == TargetKind.SERIALIZABLE);
if (error) {
throw new AssertionError("Bad stat diagnostic found for source\n" +
"lambda = " + diagChecker.lambda + "\n" +
"bridge = " + diagChecker.bridge + "\n" +
"altMF = " + diagChecker.altMetafactory + "\n" +
source.source);
}
}
static class DiagnosticChecker
implements javax.tools.DiagnosticListener<JavaFileObject> {
boolean altMetafactory;
boolean bridge;
boolean lambda;
public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
try {
if (diagnostic.getKind() == Diagnostic.Kind.NOTE) {
switch (diagnostic.getCode()) {
case "compiler.note.lambda.stat":
lambda = true;
break;
case "compiler.note.mref.stat":
lambda = false;
bridge = false;
break;
case "compiler.note.mref.stat.1":
lambda = false;
bridge = true;
break;
default:
throw new AssertionError("unexpected note: " + diagnostic.getCode());
}
ClientCodeWrapper.DiagnosticSourceUnwrapper dsu =
(ClientCodeWrapper.DiagnosticSourceUnwrapper)diagnostic;
altMetafactory = (Boolean)dsu.d.getArgs()[0];
}
} catch (RuntimeException t) {
t.printStackTrace();
throw t;
}
}
}
}
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