/*
* Copyright (c) 2014, 2016, 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 8029161 8029376
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.file
*/
import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.tree.IdentifierTree;
import com.sun.source.tree.MemberSelectTree;
import com.sun.source.util.JavacTask;
import com.sun.source.util.TreePathScanner;
import com.sun.source.util.Trees;
import com.sun.tools.javac.api.JavacTool;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.lang.model.element.Element;
import javax.lang.model.element.ElementKind;
import javax.lang.model.type.TypeKind;
import javax.tools.Diagnostic;
import javax.tools.DiagnosticListener;
import javax.tools.JavaFileManager;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
public class VerifyErroneousAnnotationsAttributed {
public static void main(String... args) throws IOException, URISyntaxException {
new VerifyErroneousAnnotationsAttributed().run();
}
void run() throws IOException {
try {
int failCount = 0;
for (String ann : generateAnnotations()) {
String code = PATTERN.replace("PLACEHOLDER", ann);
try {
validate(code);
} catch (Throwable t) {
System.out.println("Failed for: ");
System.out.println(code);
t.printStackTrace(System.out);
failCount++;
}
}
if (failCount > 0) {
throw new IllegalStateException("failed sub-tests: " + failCount);
}
} finally {
fm.close();
}
}
List<String> generateAnnotations() {
List<String> result = new ArrayList<>();
result.addAll(Kind.ANNOTATION.generateValue(2, true));
result.addAll(Kind.ANNOTATION.generateValue(2, false));
return result;
}
enum Kind {
INT("i", "ValueInt") {
@Override public List<String> generateValue(int depth, boolean valid) {
if (valid) {
return Arrays.asList("INT_VALUE");
} else {
return Arrays.asList("BROKEN_INT_VALUE");
}
}
},
ANNOTATION("a", "ValueAnnotation") {
@Override public List<String> generateValue(int depth, boolean valid) {
String ad = "@Annotation" + depth + (valid ? "" : "Unknown");
if (depth <= 0) {
return Arrays.asList(ad);
}
List<String> result = new ArrayList<>();
final Kind[][] generateKindCombinations = new Kind[][] {
new Kind[] {Kind.INT},
new Kind[] {Kind.ANNOTATION},
new Kind[] {Kind.INT, Kind.ANNOTATION}
};
for (boolean generateAssignment : new boolean[] {false, true}) {
for (boolean generateValid : new boolean[] {false, true}) {
for (Kind[] generateKinds : generateKindCombinations) {
if (generateKinds.length > 1 && generateValid && !generateAssignment) {
//skip: the same code is generated for generateValid == false.
continue;
}
List<String> attributes = generateAttributes(generateAssignment,
generateValid, depth, generateKinds);
String annotation;
if (generateAssignment) {
annotation = ad;
} else {
annotation = ad + generateKinds[0].annotationWithValueSuffix;
}
for (String attr : attributes) {
result.add(annotation + "(" + attr + ")");
}
}
}
}
return result;
}
List<String> generateAttributes(boolean generateAssignment, boolean valid, int depth,
Kind... kinds) {
List<List<String>> combinations = new ArrayList<>();
for (boolean subValid : new boolean[] {false, true}) {
for (Kind k : kinds) {
String prefix;
if (generateAssignment) {
if (valid) {
prefix = k.validAttributeName + "=";
} else {
prefix = "invalid" + k.validAttributeName + "=";
}
} else {
prefix = "";
}
List<String> combination = new ArrayList<>();
combinations.add(combination);
for (String val : k.generateValue(depth - 1, subValid)) {
combination.add(prefix + val);
}
}
}
List<String> result = new ArrayList<>();
combine(combinations, new StringBuilder(), result);
return result;
}
void combine(List<List<String>> combinations, StringBuilder current, List<String> to) {
if (combinations.isEmpty()) {
to.add(current.toString());
return ;
}
int currLen = current.length();
for (String str : combinations.get(0)) {
if (current.length() > 0) current.append(", ");
current.append(str);
combine(combinations.subList(1, combinations.size()), current, to);
current.delete(currLen, current.length());
}
}
};
String validAttributeName;
String annotationWithValueSuffix;
private Kind(String validAttributeName, String annotationWithValueSuffix) {
this.validAttributeName = validAttributeName;
this.annotationWithValueSuffix = annotationWithValueSuffix;
}
public abstract List<String> generateValue(int depth, boolean valid);
}
private static final String PATTERN =
"public class Test {\n" +
" public static final int INT_VALUE = 1;\n" +
" @interface Annotation0 {}\n" +
" @interface Annotation1 {int i() default 0; Annotation0 a() default @Annotation0; }\n" +
" @interface Annotation2 {int i() default 0; Annotation1 a() default @Annotation1; }\n" +
" @interface Annotation1ValueInt {int value() default 0; }\n" +
" @interface Annotation2ValueInt {int value() default 0; }\n" +
" @interface Annotation1ValueAnnotation {Annotation0 a() default @Annotation0; }\n" +
" @interface Annotation2ValueAnnotation {Annotation1 a() default @Annotation1; }\n" +
" PLACEHOLDER\n" +
" private void test() { }\n" +
"}";
static final class TestCase {
final String code;
final boolean valid;
public TestCase(String code, boolean valid) {
this.code = code;
this.valid = valid;
}
}
final JavacTool tool = JavacTool.create();
final JavaFileManager fm = tool.getStandardFileManager(null, null, null);
final DiagnosticListener<JavaFileObject> devNull = new DiagnosticListener<JavaFileObject>() {
@Override public void report(Diagnostic<? extends JavaFileObject> diagnostic) {}
};
void validate(String code) throws IOException, URISyntaxException {
JavacTask task = tool.getTask(null,
fm,
devNull,
Arrays.asList("--should-stop:at=FLOW"),
null,
Arrays.asList(new MyFileObject(code)));
final Trees trees = Trees.instance(task);
final CompilationUnitTree cut = task.parse().iterator().next();
task.analyze();
//ensure all the annotation attributes are annotated meaningfully
//all the attributes in the test file should contain either an identifier
//or a select, so only checking those for a reasonable Element/Symbol.
new TreePathScanner<Void, Void>() {
@Override
public Void visitIdentifier(IdentifierTree node, Void p) {
verifyAttributedMeaningfully();
return super.visitIdentifier(node, p);
}
@Override
public Void visitMemberSelect(MemberSelectTree node, Void p) {
verifyAttributedMeaningfully();
return super.visitMemberSelect(node, p);
}
private void verifyAttributedMeaningfully() {
Element el = trees.getElement(getCurrentPath());
if (el == null || el.getKind() == ElementKind.OTHER ||
el.asType().getKind() == TypeKind.OTHER) {
throw new IllegalStateException("Not attributed properly: " +
getCurrentPath().getParentPath().getLeaf());
}
}
}.scan(cut, null);
}
static class MyFileObject extends SimpleJavaFileObject {
private final String text;
public MyFileObject(String text) {
super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
this.text = text;
}
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return text;
}
}
}