/*
* Copyright (c) 2010, 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 6981185
* @summary com.sun.tools.model.JavacTypes.contains() calls Type.contains instead of Types.containsType
* @run main TestContainTypes
*/
import java.net.URI;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.RoundEnvironment;
import javax.lang.model.element.Element;
import javax.lang.model.element.TypeElement;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.type.DeclaredType;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
import javax.tools.ToolProvider;
import com.sun.source.util.JavacTask;
import javax.annotation.processing.SupportedSourceVersion;
import javax.lang.model.SourceVersion;
public class TestContainTypes {
enum ClassType {
OBJECT("Object"),
NUMBER("Number"),
INTEGER("Integer"),
STRING("String");
String classStub;
ClassType(String classStub) {
this.classStub = classStub;
}
boolean subtypeOf(ClassType that) {
switch (that) {
case OBJECT: return true;
case NUMBER: return this == NUMBER || this == INTEGER;
case INTEGER: return this == INTEGER;
case STRING: return this == STRING;
default: throw new AssertionError("Bad type kind in subtyping test");
}
}
}
enum ParameterType {
INVARIANT("List<#1>"),
COVARIANT("List<? extends #1>"),
CONTRAVARIANT("List<? super #1>"),
BIVARIANT("List<?>");
String paramTypeStub;
ParameterType(String paramTypeStub) {
this.paramTypeStub = paramTypeStub;
}
String instantiate(ClassType ct) {
return paramTypeStub.replace("#1", ct.classStub);
}
static boolean contains(ParameterType pt1, ClassType ct1,
ParameterType pt2, ClassType ct2) {
switch (pt1) {
case INVARIANT: return (pt2 == INVARIANT && ct1 == ct2) ||
(pt2 == CONTRAVARIANT && ct1 == ct2 && ct1 == ClassType.OBJECT);
case COVARIANT: return ((pt2 == INVARIANT || pt2 == COVARIANT) &&
ct2.subtypeOf(ct1)) ||
(ct1 == ClassType.OBJECT);
case CONTRAVARIANT: return (pt2 == INVARIANT || pt2 == CONTRAVARIANT) &&
ct1.subtypeOf(ct2);
case BIVARIANT: return true;
default: throw new AssertionError("Bad type kind in containment test");
}
}
}
static class JavaSource extends SimpleJavaFileObject {
final static String sourceStub =
"import java.util.List;\n" +
"@interface ToCheck {}\n" +
"class Test {\n" +
" @ToCheck void test(#A a, #B b) {}\n" +
"}\n";
String source;
public JavaSource(String typeA, String typeB) {
super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
source = sourceStub.replace("#A", typeA).replace("#B", typeB);
}
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return source;
}
}
public static void main(String... args) throws Exception {
for (ClassType ctA : ClassType.values()) {
for (ParameterType ptA : ParameterType.values()) {
for (ClassType ctB : ClassType.values()) {
for (ParameterType ptB : ParameterType.values()) {
compileAndCheck(ptA, ctA, ptB, ctB);
}
}
}
}
}
static void compileAndCheck(ParameterType ptA, ClassType ctA, ParameterType ptB, ClassType ctB) throws Exception {
JavaSource source = new JavaSource(ptA.instantiate(ctA), ptB.instantiate(ctB));
final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
JavacTask ct = (JavacTask)tool.getTask(null, null, null,
null, null, Arrays.asList(source));
ct.setProcessors(Arrays.asList(new ContainTypesTester(ParameterType.contains(ptA, ctA, ptB, ctB), source)));
System.err.println("A = " + ptA +" / " + ptA.instantiate(ctA));
System.err.println("B = " + ptB +" / " + ptB.instantiate(ctB));
System.err.println("Source = " + source.source);
ct.analyze();
}
@SupportedSourceVersion(SourceVersion.RELEASE_7)
static class ContainTypesTester extends AbstractProcessor {
boolean expected;
JavaSource source;
ContainTypesTester(boolean expected, JavaSource source) {
this.expected = expected;
this.source = source;
}
@Override
public Set<String> getSupportedAnnotationTypes() {
Set<String> supportedAnnos = new HashSet();
supportedAnnos.add("*");
return supportedAnnos;
}
private void error(String msg) {
System.err.println(source.source);
throw new AssertionError(msg);
}
@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
if (roundEnv.getRootElements().size() == 0) {
return true;
}
if (annotations.isEmpty() || annotations.size() > 1) {
error("no anno found/wrong number of annotations found: " + annotations.size());
}
TypeElement anno = (TypeElement)annotations.toArray()[0];
Set<? extends Element> annoElems = roundEnv.getElementsAnnotatedWith(anno);
if (annoElems.isEmpty() || annoElems.size() > 1) {
error("no annotated element found/wrong number of annotated elements found: " + annoElems.size());
}
Element annoElement = (Element)annoElems.toArray()[0];
if (!(annoElement instanceof ExecutableElement)) {
error("annotated element must be a method");
}
ExecutableElement method = (ExecutableElement)annoElement;
if (method.getParameters().size() != 2) {
error("annotated method must have 2 arguments");
}
DeclaredType d1 = (DeclaredType)method.getParameters().get(0).asType();
DeclaredType d2 = (DeclaredType)method.getParameters().get(1).asType();
if (d1.getTypeArguments().size() != 1 ||
d1.getTypeArguments().size() != 1) {
error("parameter type must be generic in one type-variable");
}
TypeMirror t1 = d1.getTypeArguments().get(0);
TypeMirror t2 = d2.getTypeArguments().get(0);
if (processingEnv.getTypeUtils().contains(t1, t2) != expected) {
error("bad type containment result\n" +
"t1 : " + t1 +"\n" +
"t2 : " + t2 +"\n" +
"expected answer : " + expected +"\n");
}
return true;
}
}
}