/*
* Copyright (c) 2011, 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 7031005
* @summary javap prints "extends java.lang.Object"
*/
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.URI;
import java.util.Arrays;
import javax.tools.JavaCompiler;
import javax.tools.JavaCompiler.CompilationTask;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
import javax.tools.StandardJavaFileManager;
import javax.tools.StandardLocation;
import javax.tools.ToolProvider;
public class TestSuperclass {
enum ClassKind {
CLASS("class"),
INTERFACE("interface");
ClassKind(String keyword) {
this.keyword = keyword;
}
final String keyword;
}
enum GenericKind {
NO(""),
YES("<T>");
GenericKind(String typarams) {
this.typarams = typarams;
}
final String typarams;
}
enum SuperKind {
NONE(null),
SUPER("Super");
SuperKind(String name) {
this.name = name;
}
String extend() {
return (name == null) ? "" : "extends " + name;
}
String decl(ClassKind ck) {
return (name == null) ? "" : ck.keyword + " " + name + " { }";
}
final String name;
}
public static void main(String... args) throws Exception {
JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
int errors = 0;
for (ClassKind ck: ClassKind.values()) {
for (GenericKind gk: GenericKind.values()) {
for (SuperKind sk: SuperKind.values()) {
errors += new TestSuperclass(ck, gk, sk).run(comp, fm);
}
}
}
if (errors > 0)
throw new Exception(errors + " errors found");
}
final ClassKind ck;
final GenericKind gk;
final SuperKind sk;
TestSuperclass(ClassKind ck, GenericKind gk, SuperKind sk) {
this.ck = ck;
this.gk = gk;
this.sk = sk;
}
int run(JavaCompiler comp, StandardJavaFileManager fm) throws IOException {
System.err.println("test: ck:" + ck + " gk:" + gk + " sk:" + sk);
File testDir = new File(ck + "-" + gk + "-" + sk);
testDir.mkdirs();
fm.setLocation(StandardLocation.CLASS_OUTPUT, Arrays.asList(testDir));
JavaSource js = new JavaSource();
System.err.println(js.getCharContent(false));
CompilationTask t = comp.getTask(null, fm, null, null, null, Arrays.asList(js));
if (!t.call())
throw new Error("compilation failed");
File testClass = new File(testDir, "Test.class");
String out = javap(testClass);
// Extract class sig from first line of Java source
String expect = js.source.replaceAll("(?s)^(.* Test[^{]+?) *\\{.*", "$1");
// Extract class sig from line from javap output
String found = out.replaceAll("(?s).*\n(.* Test[^{]+?) *\\{.*", "$1");
checkEqual("class signature", expect, found);
return errors;
}
String javap(File file) {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
String[] args = { file.getPath() };
int rc = com.sun.tools.javap.Main.run(args, pw);
pw.close();
String out = sw.toString();
if (!out.isEmpty())
System.err.println(out);
if (rc != 0)
throw new Error("javap failed: rc=" + rc);
return out;
}
void checkEqual(String label, String expect, String found) {
if (!expect.equals(found))
error("Unexpected " + label + " found: '" + found + "', expected: '" + expect + "'");
}
void error(String msg) {
System.err.println("Error: " + msg);
errors++;
}
int errors;
class JavaSource extends SimpleJavaFileObject {
static final String template =
"#CK Test#GK #EK { }\n"
+ "#SK\n";
final String source;
public JavaSource() {
super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
source = template
.replace("#CK", ck.keyword)
.replace("#GK", gk.typarams)
.replace("#EK", sk.extend())
.replace("#SK", sk.decl(ck));
}
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return source;
}
}
}