Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * @test /nodynamiccopyright/

  * @bug 7190862 7109747

  * @summary javap shows an incorrect type for operands if the 'wide' prefix is used

  */

 import com.sun.source.util.JavacTask;

 import com.sun.tools.javap.JavapFileManager;

 import com.sun.tools.javap.JavapTask;

 import java.io.PrintWriter;

 import java.io.StringWriter;

 import java.net.URI;

 import java.util.Arrays;

 import java.util.List;

 import java.util.Locale;

 import javax.tools.Diagnostic;

 import javax.tools.DiagnosticCollector;

 import javax.tools.JavaCompiler;

 import javax.tools.JavaFileManager;

 import javax.tools.JavaFileObject;

 import javax.tools.SimpleJavaFileObject;

 import javax.tools.ToolProvider;

 public class T7190862 {

     enum TypeWideInstructionMap {

         INT("int", new String[]{"istore_w", "iload_w"}),

         LONG("long", new String[]{"lstore_w", "lload_w"}),

         FLOAT("float", new String[]{"fstore_w", "fload_w"}),

         DOUBLE("double", new String[]{"dstore_w", "dload_w"}),

         OBJECT("Object", new String[]{"astore_w", "aload_w"});

         String type;

         String[] instructions;

         TypeWideInstructionMap(String type, String[] instructions) {

             this.type = type;

             this.instructions = instructions;

         }

     }

     JavaSource source;

     public static void main(String[] args) {

         JavaCompiler comp = ToolProvider.getSystemJavaCompiler();

         new T7190862().run(comp);

     }

     private void run(JavaCompiler comp) {

         String code;

         for (TypeWideInstructionMap typeInstructionMap: TypeWideInstructionMap.values()) {

             if (typeInstructionMap != TypeWideInstructionMap.OBJECT) {

                 code = createWideLocalSource(typeInstructionMap.type, 300);

             } else {

                 code = createWideLocalSourceForObject(300);

             }

             source = new JavaSource(code);

             compile(comp);

             check(typeInstructionMap.instructions);

         }

         //an extra test for the iinc instruction

         code = createIincSource();

         source = new JavaSource(code);

         compile(comp);

         check(new String[]{"iinc_w"});

     }

     private void compile(JavaCompiler comp) {

         JavacTask ct = (JavacTask)comp.getTask(null, null, null, null, null, Arrays.asList(source));

         try {

             if (!ct.call()) {

                 throw new AssertionError("Error thrown when compiling the following source:\n" + source.getCharContent(true));

             }

         } catch (Throwable ex) {

             throw new AssertionError("Error thrown when compiling the following source:\n" + source.getCharContent(true));

         }

     }

     private void check(String[] instructions) {

         String out = javap(Arrays.asList("-c"), Arrays.asList("Test.class"));

         for (String line: out.split(System.getProperty("line.separator"))) {

             line = line.trim();

             for (String instruction: instructions) {

                 if (line.contains(instruction) && line.contains("#")) {

                     throw new Error("incorrect type for operands for instruction " + instruction);

                 }

             }

         }

     }

     private String javap(List<String> args, List<String> classes) {

         DiagnosticCollector<JavaFileObject> dc = new DiagnosticCollector<JavaFileObject>();

         StringWriter sw = new StringWriter();

         PrintWriter pw = new PrintWriter(sw);

         JavaFileManager fm = JavapFileManager.create(dc, pw);

         JavapTask t = new JavapTask(pw, fm, dc, args, classes);

         boolean ok = t.run();

         if (!ok)

             throw new Error("javap failed unexpectedly");

         List<Diagnostic<? extends JavaFileObject>> diags = dc.getDiagnostics();

         for (Diagnostic<? extends JavaFileObject> d: diags) {

             if (d.getKind() == Diagnostic.Kind.ERROR)

                 throw new Error(d.getMessage(Locale.ENGLISH));

         }

         return sw.toString();

     }

     private String createWideLocalSource(String type, int numberOfVars) {

         String result = "    " + type + " x0 = 0;\n";

         for (int i = 1; i < numberOfVars; i++) {

             result += "        " + type + " x" + i + " = x" + (i - 1) + " + 1;\n";

         }

         return result;

     }

     private String createWideLocalSourceForObject(int numberOfVars) {

         String result = "    Object x0 = new Object();\n";

         for (int i = 1; i < numberOfVars; i++) {

             result += "        Object x" + i + " = x0;\n";

         }

         return result;

     }

     private String createIincSource() {

         return "    int i = 0;\n"

                 + "        i += 1;\n"

                 + "        i += 51;\n"

                 + "        i += 101;\n"

                 + "        i += 151;\n";

     }

     class JavaSource extends SimpleJavaFileObject {

         String template = "class Test {\n" +

                           "    public static void main(String[] args)\n" +

                           "    {\n" +

                           "        #C" +

                           "    }\n" +

                           "}";

         String source;

         public JavaSource(String code) {

             super(URI.create("Test.java"), JavaFileObject.Kind.SOURCE);

             source = template.replaceAll("#C", code);

         }

         @Override

         public CharSequence getCharContent(boolean ignoreEncodingErrors) {

             return source;

         }

     }

 }