8aa50288a1
8307444: java.lang.AssertionError when using unnamed patterns 8307482: Compiler should accept var _ in nested patterns in switch case 8307007: Implementation for javax.lang.model for unnamed variables (Preview) 8308312: Compiler should fail when a local variable declaration does not include an Identifier and does not have an initializer 8308309: Compiler should accept mixed masked and unmasked variables in lambda parameters Co-authored-by: Jan Lahoda <jlahoda@openjdk.org> Co-authored-by: Aggelos Biboudis <abimpoudis@openjdk.org> Reviewed-by: vromero, darcy
117 lines
4.3 KiB
Java
117 lines
4.3 KiB
Java
/*
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* Copyright (c) 2023, 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 8302344 8307007
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* @summary Compiler Implementation for Unnamed patterns and variables
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* @library /tools/javac/lib
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* @modules jdk.compiler
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* @build JavacTestingAbstractProcessor
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* @compile TestUnnamedVariableElement8.java
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* @compile -source 8 -processor TestUnnamedVariableElement8 -proc:only TestUnnamedVariableElementData.java
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*/
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import com.sun.source.tree.VariableTree;
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import com.sun.source.util.TreePath;
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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 javax.annotation.processing.RoundEnvironment;
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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.element.TypeElement;
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import javax.lang.model.element.VariableElement;
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import java.util.Set;
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public class TestUnnamedVariableElement8 extends JavacTestingAbstractProcessor implements AutoCloseable {
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public boolean process(Set<? extends TypeElement> annotations,
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RoundEnvironment roundEnv) {
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if (!roundEnv.processingOver()) {
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Trees trees = Trees.instance(processingEnv);
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for(Element rootElement : roundEnv.getRootElements()) {
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TreePath treePath = trees.getPath(rootElement);
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(new UnnamedVariableScanner(trees)).
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scan(treePath.getCompilationUnit(), null);
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}
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}
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return true;
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}
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@Override
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public void close() {}
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class UnnamedVariableScanner extends TreePathScanner<Void, Void> {
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private Trees trees;
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public UnnamedVariableScanner(Trees trees) {
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super();
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this.trees = trees;
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}
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@Override
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public Void visitVariable(VariableTree node, Void unused) {
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handleTreeAsLocalVar(getCurrentPath());
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return super.visitVariable(node, unused);
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}
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private void handleTreeAsLocalVar(TreePath tp) {
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Element element = trees.getElement(tp);
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System.out.println("Name: " + element.getSimpleName() +
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"\tKind: " + element.getKind());
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if (element.getKind() != ElementKind.LOCAL_VARIABLE) {
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throw new RuntimeException("Expected a local variable, but got: " +
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element.getKind());
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}
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if (!element.getSimpleName().toString().equals("_")) {
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throw new RuntimeException("Expected _ for simple name of an unnamed variable, but got: " +
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element.getSimpleName());
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}
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testUnnamedVariable(element);
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}
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}
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/**
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* Verify that a local variable modeled as an element behaves
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* as expected under 6 and latest specific visitors.
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*/
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private static void testUnnamedVariable(Element element) {
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ElementKindVisitor visitorLatest =
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new ElementKindVisitor<Object, Void>() {
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@Override
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public Object visitVariableAsLocalVariable(VariableElement e,
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Void p) {
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return e;
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}
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};
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if (visitorLatest.visit(element) == null) {
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throw new RuntimeException("Null result of a resource variable visitation.");
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}
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}
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}
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