| /* |
| * Copyright (c) 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 7020499 |
| * @summary Verify that the code that closes the resources is shared by among try-with-resources |
| * @library /tools/lib |
| * @modules jdk.compiler/com.sun.tools.javac.api |
| * jdk.compiler/com.sun.tools.javac.code |
| * jdk.compiler/com.sun.tools.javac.comp |
| * jdk.compiler/com.sun.tools.javac.tree |
| * jdk.compiler/com.sun.tools.javac.util |
| * @build toolbox.ToolBox TwrShareCloseCode |
| * @run main TwrShareCloseCode |
| */ |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| import com.sun.source.util.JavacTask; |
| import com.sun.tools.javac.api.JavacTool; |
| import com.sun.tools.javac.comp.AttrContext; |
| import com.sun.tools.javac.comp.Env; |
| import com.sun.tools.javac.comp.Lower; |
| import com.sun.tools.javac.tree.JCTree; |
| import com.sun.tools.javac.tree.JCTree.JCMethodDecl; |
| import com.sun.tools.javac.tree.JCTree.JCMethodInvocation; |
| import com.sun.tools.javac.tree.TreeInfo; |
| import com.sun.tools.javac.tree.TreeMaker; |
| import com.sun.tools.javac.tree.TreeScanner; |
| import com.sun.tools.javac.util.Context; |
| import com.sun.tools.javac.util.Context.Factory; |
| import com.sun.tools.javac.util.List; |
| |
| import toolbox.ToolBox; |
| |
| public class TwrShareCloseCode { |
| public static void main(String... args) throws IOException { |
| new TwrShareCloseCode().run(); |
| } |
| |
| void run() throws IOException { |
| run("try (Test t1 = new Test()) { }", true); |
| run("try (Test t1 = new Test()) { }\n" + |
| "try (Test t2 = new Test()) { }", true); |
| run("try (Test t1 = new Test();\n" + |
| " Test t2 = new Test()) { }", true); |
| run("try (Test t1 = new Test()) { }\n" + |
| "try (Test t2 = new Test()) { }\n" + |
| "try (Test t3 = new Test()) { }", true); |
| run("try (Test t1 = new Test();\n" + |
| " Test t2 = new Test();\n" + |
| " Test t3 = new Test()) { }", false); |
| run("try (Test t1 = new Test()) { }\n" + |
| "try (Test t2 = new Test()) { }\n" + |
| "try (Test t3 = new Test()) { }\n" + |
| "try (Test t4 = new Test()) { }", false); |
| |
| run("try (Test t1 = new Test()) { i++; }", true); |
| run("try (Test t1 = new Test()) { i++; }\n" + |
| "try (Test t2 = new Test()) { i++; }", false); |
| |
| run("try (Test t1 = new Test(); Test t2 = new Test()) { i++; }", false); |
| |
| run("try (Test t1 = new Test()) { i++; }\n" + |
| "try (Test t2 = new Test()) { }", true); |
| |
| run("try (Test t1 = new Test()) { i++; }\n" + |
| "try (Test t2 = new Test()) { }\n" + |
| "try (Test t3 = new Test()) { }", false); |
| |
| run("try (Test t1 = new Test()) { i++; }\n" + |
| "try (Test t2 = new Test()) { i++; }\n" + |
| "try (Test t3 = new Test()) { }", false); |
| } |
| void run(String trySpec, boolean expected) throws IOException { |
| String template = "public class Test implements AutoCloseable {\n" + |
| " void t(int i) {\n" + |
| " TRY\n" + |
| " }\n" + |
| " public void close() { }\n" + |
| "}\n"; |
| String code = template.replace("TRY", trySpec); |
| Context ctx = new Context(); |
| DumpLower.preRegister(ctx); |
| Iterable<ToolBox.JavaSource> files = Arrays.asList(new ToolBox.JavaSource(code)); |
| JavacTask task = JavacTool.create().getTask(null, null, null, null, null, files, ctx); |
| task.call(); |
| boolean actual = ((DumpLower) DumpLower.instance(ctx)).closeSeen; |
| |
| if (expected != actual) { |
| throw new IllegalStateException("expected: " + expected + "; actual: " + actual + "; code:\n" + code); |
| } |
| } |
| |
| static class DumpLower extends Lower { |
| |
| public static void preRegister(Context ctx) { |
| ctx.put(lowerKey, new Factory<Lower>() { |
| @Override |
| public Lower make(Context c) { |
| return new DumpLower(c); |
| } |
| }); |
| } |
| |
| public DumpLower(Context context) { |
| super(context); |
| } |
| |
| boolean closeSeen; |
| |
| @Override |
| public List<JCTree> translateTopLevelClass(Env<AttrContext> env, JCTree cdef, TreeMaker make) { |
| List<JCTree> result = super.translateTopLevelClass(env, cdef, make); |
| |
| new TreeScanner() { |
| @Override |
| public void visitMethodDef(JCMethodDecl tree) { |
| if (!tree.name.contentEquals("t")) |
| return; |
| |
| super.visitMethodDef(tree); |
| } |
| |
| @Override |
| public void visitApply(JCMethodInvocation tree) { |
| closeSeen |= TreeInfo.symbol(tree.meth).name.contentEquals("close"); |
| super.visitApply(tree); |
| } |
| }.scan(result); |
| |
| return result; |
| } |
| |
| } |
| } |