Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/tree/ScopeTest.java
test/tools/javac/tree/ScopeTest.java
- changeset 2042
- 41599b57d262
- parent 0
- 959103a6100f
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| 2041:9a75bdb249a2 | 2042:41599b57d262 |
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| 1 /* | |
| 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
| 23 | |
| 24 /* | |
| 25 * @test | |
| 26 * @bug 8023835 | |
| 27 * @summary Verify that implicit type of lambda parameter is correctly attributed | |
| 28 * in Scope | |
| 29 * @run main ScopeTest | |
| 30 */ | |
| 31 | |
| 32 import com.sun.source.tree.CompilationUnitTree; | |
| 33 import com.sun.source.tree.MemberSelectTree; | |
| 34 import com.sun.source.tree.Scope; | |
| 35 import com.sun.source.util.JavacTask; | |
| 36 import com.sun.source.util.TreePath; | |
| 37 import com.sun.source.util.TreePathScanner; | |
| 38 import com.sun.source.util.Trees; | |
| 39 import com.sun.tools.javac.api.JavacTaskImpl; | |
| 40 import com.sun.tools.javac.api.JavacTool; | |
| 41 import com.sun.tools.javac.model.JavacTypes; | |
| 42 import java.io.IOException; | |
| 43 import java.net.URI; | |
| 44 import java.util.ArrayList; | |
| 45 import java.util.Collections; | |
| 46 import javax.lang.model.element.Element; | |
| 47 import javax.lang.model.type.TypeMirror; | |
| 48 import javax.lang.model.util.Types; | |
| 49 import javax.tools.JavaFileObject; | |
| 50 import javax.tools.JavaFileObject.Kind; | |
| 51 import javax.tools.SimpleJavaFileObject; | |
| 52 | |
| 53 public class ScopeTest { | |
| 54 | |
| 55 private static final String SOURCE_CODE = | |
| 56 "public class Test {\n" + | |
| 57 " private static void test() {\n" + | |
| 58 " InvokeOn f = null;\n" + | |
| 59 " f.run(x -> { x.correct(); });\n" + | |
| 60 " }\n" + | |
| 61 " public static final class FooBar {\n" + | |
| 62 " public void dontRun() { }\n" + | |
| 63 " }\n" + | |
| 64 "}\n" + | |
| 65 "class InvokeOn {\n" + | |
| 66 " public void run(I i) { }\n" + | |
| 67 "}\n" + | |
| 68 "class FooBar {\n" + | |
| 69 " public void correct() { }\n" + | |
| 70 "}\n" + | |
| 71 "interface I {\n" + | |
| 72 " public void run(FooBar f);\n" + | |
| 73 "}"; | |
| 74 | |
| 75 public static void main(String... args) throws Exception { | |
| 76 verifyLambdaScopeCorrect(""); | |
| 77 verifyLambdaScopeCorrect("package test;"); | |
| 78 } | |
| 79 | |
| 80 private static void verifyLambdaScopeCorrect(final String packageClause) throws Exception { | |
| 81 JavacTool tool = JavacTool.create(); | |
| 82 JavaFileObject source = new SimpleJavaFileObject(URI.create("mem://Test.java"), Kind.SOURCE) { | |
| 83 @Override public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException { | |
| 84 return packageClause + SOURCE_CODE; | |
| 85 } | |
| 86 @Override public boolean isNameCompatible(String simpleName, Kind kind) { | |
| 87 return true; | |
| 88 } | |
| 89 }; | |
| 90 Iterable<? extends JavaFileObject> fos = Collections.singletonList(source); | |
| 91 JavacTask task = tool.getTask(null, null, null, new ArrayList<String>(), null, fos); | |
| 92 final Types types = JavacTypes.instance(((JavacTaskImpl) task).getContext()); | |
| 93 final Trees trees = Trees.instance(task); | |
| 94 CompilationUnitTree cu = task.parse().iterator().next(); | |
| 95 | |
| 96 task.analyze(); | |
| 97 | |
| 98 new TreePathScanner<Void, Void>() { | |
| 99 @Override public Void visitMemberSelect(MemberSelectTree node, Void p) { | |
| 100 if (node.getIdentifier().contentEquals("correct")) { | |
| 101 TypeMirror xType = trees.getTypeMirror(new TreePath(getCurrentPath(), node.getExpression())); | |
| 102 Scope scope = trees.getScope(getCurrentPath()); | |
| 103 for (Element l : scope.getLocalElements()) { | |
| 104 if (!l.getSimpleName().contentEquals("x")) continue; | |
| 105 if (!types.isSameType(xType, l.asType())) { | |
| 106 throw new IllegalStateException("Incorrect variable type in scope: " + l.asType() + "; should be: " + xType); | |
| 107 } | |
| 108 } | |
| 109 } | |
| 110 return super.visitMemberSelect(node, p); | |
| 111 } | |
| 112 }.scan(cu, null); | |
| 113 } | |
| 114 } |
