jdk8-mips64-public/langtools: test/tools/javac/classfiles/ClassVersionChecker.java@9bce0c73583d (annotated)

test/tools/javac/classfiles/ClassVersionChecker.java@9bce0c73583d (annotated)

test/tools/javac/classfiles/ClassVersionChecker.java

Wed, 31 Oct 2012 10:21:14 -0700

author: ksrini
date: Wed, 31 Oct 2012 10:21:14 -0700
changeset 1395: 9bce0c73583d
parent 1248: 55ae94116e89
child 2525: 2eb010b6cb22
permissions: -rw-r--r--

8001112: Make -target 8 in javac generate version 52.0 classfile
Reviewed-by: darcy, jjg

 /*
  * Copyright (c) 2012, 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
  *
  */
 import java.io.*;
 import java.nio.*;
 import java.util.*;
 import java.util.regex.*;
 public class ClassVersionChecker {
     int errors;
     String[] jdk = {"","1.2","1.3","1.4","1.5","1.6","1.7","1.8"};
     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 1.7
          * 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 =
                 {{52, -1, -1, -1, -1, -1, -1, -1},
                  {48, 46, 47, 48, 49, 50, 51, 52},
                  {48, 46, 47, 48, 49, 50, 51, 52},
                  {48, -1, -1, 48, 49, 50, 51, 52},
                  {52, -1, -1, -1, 49, 50, 51, 52},
                  {52, -1, -1, -1, -1, 50, 51, 52},
                  {52, -1, -1, -1, -1, -1, 51, 52},
                  {52, -1, -1, -1, -1, -1, -1, 52}};
         // 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++;
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/classfiles/ClassVersionChecker.java@9bce0c73583d (annotated)

test/tools/javac/classfiles/ClassVersionChecker.java