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/*
* 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 close resource code works properly in all cases
* @library /tools/lib
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.comp
* jdk.compiler/com.sun.tools.javac.main
* @build toolbox.ToolBox TwrClose
* @run main TwrClose
*/
import javax.tools.JavaFileManager;
import javax.tools.StandardLocation;
import javax.tools.ToolProvider;
import com.sun.tools.javac.comp.Lower;
import toolbox.JavacTask;
import toolbox.ToolBox;
public class TwrClose {
public static void main(String... args) throws Exception {
for (int i = 1; i < Lower.USE_CLOSE_RESOURCE_METHOD_THRESHOLD * 2; i++) {
new TwrClose().compile(i);
}
}
ToolBox tb = new ToolBox();
JavaFileManager fm = ToolProvider.getSystemJavaCompiler()
.getStandardFileManager(null, null, null);
void compile(int trysCount) throws Exception {
StringBuilder testInvocations = new StringBuilder();
StringBuilder testMethods = new StringBuilder();
for (int i = 0; i < trysCount; i++) {
testInvocations.append(TEST_INVOCATIONS_TEMPLATE.replace("#N", Integer.toString(i)));
testMethods.append(TEST_METHOD_TEMPLATE.replace("#N", Integer.toString(i)));
}
String sourceCode = FILE_TEMPLATE.replace("#TEST_INVOCATIONS", testInvocations.toString())
.replace("#TEST_METHODS", testMethods.toString());
System.err.println("analyzing:");
System.err.println(sourceCode);
try (ToolBox.MemoryFileManager mfm = new ToolBox.MemoryFileManager()) {
new JavacTask(tb).fileManager(mfm)
.sources(sourceCode)
.run()
.writeAll();
ClassLoader cl = new ClassLoader(TwrClose.class.getClassLoader()) {
@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {
byte[] data = mfm.getFileBytes(StandardLocation.CLASS_OUTPUT, name);
if (data != null) {
return defineClass(name, data, 0, data.length);
}
return super.findClass(name);
}
};
((Runnable) cl.loadClass("Test").newInstance()).run();
}
}
final String TEST_INVOCATIONS_TEMPLATE =
" test#N(false, false, Arrays.asList(\"close\"));\n" +
" test#N(false, true, Arrays.asList(\"close\", \"close-exception\"));\n" +
" test#N(true, false, Arrays.asList(\"close\", \"inTwr\"));\n" +
" test#N(true, true, Arrays.asList(\"close\", \"inTwr\", \"close-exception\"));\n";
final String TEST_METHOD_TEMPLATE =
" private void test#N(boolean failInTwr, boolean failOnClose,\n" +
" List<String> expectedMessages) {\n" +
" List<String> messages = new ArrayList<>();\n" +
" try {\n" +
" try (CloseableImpl c = new CloseableImpl(messages, failOnClose)) {\n" +
" if (failInTwr)\n" +
" throw new IllegalStateException(\"inTwr\");\n" +
" }\n" +
" } catch (IllegalStateException ex) {\n" +
" messages.add(ex.getMessage());\n" +
" for (Throwable t : ex.getSuppressed()) {\n" +
" messages.add(t.getMessage());\n" +
" }\n" +
" }\n" +
" if (!expectedMessages.equals(messages))\n" +
" throw new AssertionError(\"Expected and actual messages differ; expectedMessages=\" +\n" +
" expectedMessages + \"; actual=\" + messages);\n" +
" }\n";
final String FILE_TEMPLATE =
"import java.util.*;\n" +
"public class Test implements Runnable {\n" +
" public void run() {\n" +
"#TEST_INVOCATIONS" +
" }\n" +
"#TEST_METHODS" +
" static class CloseableImpl implements AutoCloseable {\n" +
" private final List<String> messages;\n" +
" private final boolean failOnClose;\n" +
" public CloseableImpl(List<String> messages, boolean failOnClose) {\n" +
" this.messages = messages;\n" +
" this.failOnClose = failOnClose;\n" +
" }\n" +
" @Override\n" +
" public void close() {\n" +
" messages.add(\"close\");\n" +
" if (failOnClose)\n" +
" throw new IllegalStateException(\"close-exception\");\n" +
" }\n" +
" }\n" +
"}\n";
}
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