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* 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 .
*
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* questions .
*/
/*
* @ test
* @ bug 8003280
* @ summary Add lambda tests
* compile crashes on partial lambda expressions
* @ modules jdk . compiler
*/
import com.sun.source.util.JavacTask;
import java.net.URI;
import java.util.Arrays;
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 BadLambdaExpr {
static int checkCount = 0 ;
enum ParameterListKind {
ZERO_ARY("()" ),
UNARY("(#P)" ),
TWO_ARY("(#P, #P)" ),
THREE_ARY("(#P, #P, #P)" );
String parametersTemplateStr;
ParameterListKind(String parametersTemplateStr) {
this .parametersTemplateStr = parametersTemplateStr;
}
String getParameterString(ParameterKind pk) {
return parametersTemplateStr.replaceAll("#P" , pk.parameterStr);
}
}
enum ParameterKind {
IMPLICIT("a" ),
EXPLIICT("A a" );
String parameterStr;
ParameterKind(String parameterStr) {
this .parameterStr = parameterStr;
}
}
enum ArrowKind {
NONE("" ),
SEMI("-" ),
FULL("->" );
String arrowStr;
ArrowKind(String arrowStr) {
this .arrowStr = arrowStr;
}
}
enum ExprKind {
NONE("#P#A" ),
METHOD_CALL("m(#P#A)" ),
CONSTR_CALL("new Foo(#P#A)" );
String expressionTemplate;
ExprKind(String expressionTemplate) {
this .expressionTemplate = expressionTemplate;
}
String expressionString(ParameterListKind plk, ParameterKind pk,
ArrowKind ak) {
return expressionTemplate.replaceAll("#P" , plk.getParameterString(pk))
.replaceAll("#A" , ak.arrowStr);
}
}
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 (ParameterListKind plk : ParameterListKind.values()) {
for (ParameterKind pk : ParameterKind.values()) {
for (ArrowKind ak : ArrowKind.values()) {
for (ExprKind ek : ExprKind.values()) {
new BadLambdaExpr(plk, pk, ak, ek).run(comp, fm);
}
}
}
}
System.out.println("Total check executed: " + checkCount);
}
}
ParameterListKind plk;
ParameterKind pk;
ArrowKind ak;
ExprKind ek;
JavaSource source;
DiagnosticChecker diagChecker;
BadLambdaExpr(ParameterListKind plk, ParameterKind pk, ArrowKind ak, ExprKind ek) {
this .plk = plk;
this .pk = pk;
this .ak = ak;
this .ek = ek;
this .source = new JavaSource();
this .diagChecker = new DiagnosticChecker();
}
class JavaSource extends SimpleJavaFileObject {
String template = "class Test {\n" +
" SAM s = #E;\n" +
"}" ;
String source;
public JavaSource() {
super (URI.create("myfo:/Test.java" ), JavaFileObject.Kind.SOURCE);
source = template.replaceAll("#E" , ek.expressionString(plk, pk, ak));
}
@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.parse();
} catch (Throwable ex) {
throw new AssertionError("Error thron when parsing the following source:\n" + source.getCharContent(true ));
}
check();
}
void check() {
boolean errorExpected =
ak != ArrowKind.NONE ||
plk != ParameterListKind.UNARY ||
pk != ParameterKind.IMPLICIT;
if (errorExpected != diagChecker.errorFound) {
throw new Error("bad diag for source:\n" +
source.getCharContent(true ));
}
checkCount++;
}
static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
boolean errorFound;
@Override
public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
errorFound = true ;
}
}
}
}
Messung V0.5 in Prozent C=94 H=93 G=93
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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