| /* |
| * Copyright (c) 2012, 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 7157626 8001112 |
| * @summary Test major version for all legal combinations for -source and -target |
| * @author sgoel |
| * |
| * @modules jdk.compiler |
| */ |
| |
| import java.io.*; |
| import java.nio.*; |
| import java.util.*; |
| import java.util.regex.*; |
| |
| public class ClassVersionChecker { |
| |
| int errors; |
| String[] jdk = {"", "1.6", "1.7", "1.8", "1.9"}; |
| File javaFile = null; |
| |
| public static void main(String[] args) throws Throwable { |
| new ClassVersionChecker().run(); |
| } |
| |
| void run() throws Exception { |
| writeTestFile(); |
| /* Rules applicable for -source and -target combinations |
| * 1. If both empty, version num is for the current release |
| * 2. If source is not empty and target is empty, version is based on source |
| * 3. If both non-empty, version is based on target |
| */ |
| |
| /* -source (0=>empty,1=>1.2,...) X -target (0=>empty,1=>1.2,...) |
| * ver[0][0] => no -source or -target was given |
| * -1 => invalid combinations |
| */ |
| int[][] ver = |
| {{53, -1, -1, -1, -1}, |
| {53, 50, 51, 52, 53}, |
| {53, -1, 51, 52, 53}, |
| {53, -1, -1, 52, 53}}; |
| |
| // Loop to run all possible combinations of source/target values |
| for (int i = 0; i< ver.length; i++) { |
| for (int j = 0 ; j< ver[i].length; j++) { |
| if(ver[i][j] != -1) { |
| logMsg("Index values for i = " + i + " j = " + j); |
| logMsg("Running for src = " + jdk[i] + " target = "+jdk[j] +" expected = " + ver[i][j]); |
| test(i,j, ver[i][j]); |
| } |
| } |
| } |
| |
| if (errors > 0) |
| throw new Exception(errors + " errors found"); |
| } |
| |
| void test (int i, int j, int expected) { |
| File classFile = compileTestFile(i, j, javaFile); |
| short majorVer = getMajorVersion(classFile); |
| checkVersion(majorVer, expected); |
| } |
| |
| void writeTestFile() throws IOException { |
| javaFile = new File("Test.java"); |
| try(PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(javaFile)));) { |
| out.println("class Test { "); |
| out.println(" public void foo() { }"); |
| out.println("}"); |
| } catch (IOException ioe) { |
| error("IOException while creating Test.java" + ioe); |
| } |
| } |
| |
| File compileTestFile(int i , int j, File f) { |
| int rc = -1; |
| // Src and target are empty |
| if (i == 0 && j == 0 ) { |
| rc = compile("-g", f.getPath()); |
| } else if( j == 0 ) { // target is empty |
| rc = compile("-source", jdk[i], "-g", f.getPath()); |
| } else { |
| rc = compile("-source", jdk[i], "-target", jdk[j], "-g", f.getPath()); |
| } |
| if (rc != 0) |
| throw new Error("compilation failed. rc=" + rc); |
| String path = f.getPath(); |
| return new File(path.substring(0, path.length() - 5) + ".class"); |
| } |
| |
| int compile(String... args) { |
| return com.sun.tools.javac.Main.compile(args); |
| } |
| |
| void logMsg (String str) { |
| System.out.println(str); |
| } |
| |
| short getMajorVersion(File f) { |
| List<String> args = new ArrayList<String>(); |
| short majorVer = 0; |
| try(DataInputStream in = new DataInputStream(new BufferedInputStream(new FileInputStream(f)));) { |
| in.readInt(); |
| in.readShort(); |
| majorVer = in.readShort(); |
| System.out.println("major version:" + majorVer); |
| } catch (IOException e) { |
| error("IOException while reading Test.class" + e); |
| } |
| return majorVer; |
| } |
| |
| void checkVersion(short majorVer, int expected) { |
| if (majorVer != expected ) { |
| error("versions did not match, Expected: " + expected + "Got: " + majorVer); |
| } |
| } |
| |
| void error(String msg) { |
| System.out.println("error: " + msg); |
| errors++; |
| } |
| } |