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/*
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8029161 8029376
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*/
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import com.sun.source.tree.CompilationUnitTree;
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import com.sun.source.tree.IdentifierTree;
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import com.sun.source.tree.MemberSelectTree;
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import com.sun.source.util.JavacTask;
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import com.sun.source.util.TreePathScanner;
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import com.sun.source.util.Trees;
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import com.sun.tools.javac.api.JavacTool;
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import java.io.IOException;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import javax.lang.model.element.Element;
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import javax.lang.model.element.ElementKind;
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import javax.lang.model.type.TypeKind;
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import javax.tools.Diagnostic;
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import javax.tools.DiagnosticListener;
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import javax.tools.JavaFileObject;
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import javax.tools.SimpleJavaFileObject;
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public class VerifyErroneousAnnotationsAttributed {
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public static void main(String... args) throws IOException, URISyntaxException {
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new VerifyErroneousAnnotationsAttributed().run();
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}
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void run() {
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int failCount = 0;
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for (String ann : generateAnnotations()) {
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String code = PATTERN.replace("PLACEHOLDER", ann);
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try {
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validate(code);
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} catch (Throwable t) {
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System.out.println("Failed for: ");
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System.out.println(code);
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t.printStackTrace(System.out);
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failCount++;
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}
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}
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if (failCount > 0) {
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throw new IllegalStateException("failed sub-tests: " + failCount);
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}
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}
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List<String> generateAnnotations() {
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List<String> result = new ArrayList<>();
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result.addAll(Kind.ANNOTATION.generateValue(2, true));
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result.addAll(Kind.ANNOTATION.generateValue(2, false));
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return result;
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}
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enum Kind {
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INT("i", "ValueInt") {
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@Override public List<String> generateValue(int depth, boolean valid) {
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if (valid) {
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return Arrays.asList("INT_VALUE");
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} else {
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return Arrays.asList("BROKEN_INT_VALUE");
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}
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}
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},
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ANNOTATION("a", "ValueAnnotation") {
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@Override public List<String> generateValue(int depth, boolean valid) {
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String ad = "@Annotation" + depth + (valid ? "" : "Unknown");
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if (depth <= 0) {
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return Arrays.asList(ad);
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}
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List<String> result = new ArrayList<>();
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final Kind[][] generateKindCombinations = new Kind[][] {
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new Kind[] {Kind.INT},
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new Kind[] {Kind.ANNOTATION},
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new Kind[] {Kind.INT, Kind.ANNOTATION}
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};
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for (boolean generateAssignment : new boolean[] {false, true}) {
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for (boolean generateValid : new boolean[] {false, true}) {
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for (Kind[] generateKinds : generateKindCombinations) {
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if (generateKinds.length > 1 && generateValid && !generateAssignment) {
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//skip: the same code is generated for generateValid == false.
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continue;
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}
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List<String> attributes = generateAttributes(generateAssignment,
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generateValid, depth, generateKinds);
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String annotation;
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if (generateAssignment) {
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annotation = ad;
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} else {
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annotation = ad + generateKinds[0].annotationWithValueSuffix;
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}
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for (String attr : attributes) {
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result.add(annotation + "(" + attr + ")");
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}
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}
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}
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}
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return result;
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}
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List<String> generateAttributes(boolean generateAssignment, boolean valid, int depth,
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Kind... kinds) {
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List<List<String>> combinations = new ArrayList<>();
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for (boolean subValid : new boolean[] {false, true}) {
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for (Kind k : kinds) {
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String prefix;
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if (generateAssignment) {
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if (valid) {
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prefix = k.validAttributeName + "=";
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} else {
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prefix = "invalid" + k.validAttributeName + "=";
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}
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} else {
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prefix = "";
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}
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List<String> combination = new ArrayList<>();
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combinations.add(combination);
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for (String val : k.generateValue(depth - 1, subValid)) {
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combination.add(prefix + val);
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}
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}
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}
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List<String> result = new ArrayList<>();
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combine(combinations, new StringBuilder(), result);
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return result;
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}
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void combine(List<List<String>> combinations, StringBuilder current, List<String> to) {
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if (combinations.isEmpty()) {
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to.add(current.toString());
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return ;
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}
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int currLen = current.length();
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for (String str : combinations.get(0)) {
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if (current.length() > 0) current.append(", ");
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current.append(str);
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combine(combinations.subList(1, combinations.size()), current, to);
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current.delete(currLen, current.length());
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}
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}
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};
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String validAttributeName;
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String annotationWithValueSuffix;
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private Kind(String validAttributeName, String annotationWithValueSuffix) {
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this.validAttributeName = validAttributeName;
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this.annotationWithValueSuffix = annotationWithValueSuffix;
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}
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public abstract List<String> generateValue(int depth, boolean valid);
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}
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private static final String PATTERN =
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"public class Test {\n" +
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" public static final int INT_VALUE = 1;\n" +
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" @interface Annotation0 {}\n" +
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" @interface Annotation1 {int i() default 0; Annotation0 a() default @Annotation0; }\n" +
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" @interface Annotation2 {int i() default 0; Annotation1 a() default @Annotation1; }\n" +
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" @interface Annotation1ValueInt {int value() default 0; }\n" +
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" @interface Annotation2ValueInt {int value() default 0; }\n" +
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" @interface Annotation1ValueAnnotation {Annotation0 a() default @Annotation0; }\n" +
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" @interface Annotation2ValueAnnotation {Annotation1 a() default @Annotation1; }\n" +
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" PLACEHOLDER\n" +
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" private void test() { }\n" +
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"}";
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static final class TestCase {
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final String code;
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final boolean valid;
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public TestCase(String code, boolean valid) {
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this.code = code;
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this.valid = valid;
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}
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}
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final JavacTool tool = JavacTool.create();
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final DiagnosticListener<JavaFileObject> devNull = new DiagnosticListener<JavaFileObject>() {
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@Override public void report(Diagnostic<? extends JavaFileObject> diagnostic) {}
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};
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void validate(String code) throws IOException, URISyntaxException {
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JavacTask task = tool.getTask(null,
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null,
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devNull,
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Arrays.asList("-XDshouldStopPolicy=FLOW"),
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null,
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Arrays.asList(new MyFileObject(code)));
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final Trees trees = Trees.instance(task);
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final CompilationUnitTree cut = task.parse().iterator().next();
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task.analyze();
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//ensure all the annotation attributes are annotated meaningfully
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//all the attributes in the test file should contain either an identifier
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//or a select, so only checking those for a reasonable Element/Symbol.
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new TreePathScanner<Void, Void>() {
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@Override
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public Void visitIdentifier(IdentifierTree node, Void p) {
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verifyAttributedMeaningfully();
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return super.visitIdentifier(node, p);
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}
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@Override
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public Void visitMemberSelect(MemberSelectTree node, Void p) {
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verifyAttributedMeaningfully();
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return super.visitMemberSelect(node, p);
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}
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private void verifyAttributedMeaningfully() {
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Element el = trees.getElement(getCurrentPath());
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if (el == null || el.getKind() == ElementKind.OTHER ||
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el.asType().getKind() == TypeKind.OTHER) {
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throw new IllegalStateException("Not attributed properly: " +
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getCurrentPath().getParentPath().getLeaf());
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}
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}
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}.scan(cut, null);
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}
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static class MyFileObject extends SimpleJavaFileObject {
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private final String text;
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public MyFileObject(String text) {
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super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
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this.text = text;
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}
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@Override
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public CharSequence getCharContent(boolean ignoreEncodingErrors) {
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return text;
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}
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}
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}
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