Examples of com.google.gwt.dev.asm.ClassReader

com.google.gwt.dev.asm.ClassReader
A Java class parser to make a {@link ClassVisitor} visit an existing class.This class parses a byte array conforming to the Java class file format and calls the appropriate visit methods of a given class visitor for each field, method and bytecode instruction encountered. @author Eric Bruneton @author Eugene Kuleshov

   *         possesses the desired annotation
   */
  public static boolean hasAnnotation(byte[] classBytes,
      Class<? extends Annotation> annotation) {
    HasAnnotation v = new HasAnnotation(new EmptyVisitor(), annotation);
    new ClassReader(classBytes).accept(v, ClassReader.SKIP_CODE
        | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);


    return v.isFound();
  }

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     * This is used to make the initial shallow identity pass for creating
     * JRealClassType/JGenericType objects.
     */
    synchronized CollectClassData getCollectClassData() {
      if (classData == null) {
        ClassReader reader = new ClassReader(byteCode);
        classData = new CollectClassData();
        ClassVisitor classVisitor = classData;
        if (TRACE_CLASSES) {
          classVisitor = new TraceClassVisitor(classVisitor, new PrintWriter(System.out));
        }
        reader.accept(classVisitor, 0);
      }
      return classData;
    }

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                    .println("Prints a disassembled view of the given class.");
            System.err.println("Usage: Textifier [-debug] "
                    + "<fully qualified class name or class file name>");
            return;
        }
        ClassReader cr;
        if (args[i].endsWith(".class") || args[i].indexOf('\\') > -1
                || args[i].indexOf('/') > -1) {
            cr = new ClassReader(new FileInputStream(args[i]));
        } else {
            cr = new ClassReader(args[i]);
        }
        cr.accept(new TraceClassVisitor(new PrintWriter(System.out)), flags);
    }

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           */
          continue;
        }


        AnonymousClassVisitor cv = new AnonymousClassVisitor();
        new ClassReader(classBytes).accept(cv, 0);
        if (!cv.isWellFormed()) {
          /*
           * Weird case #2: As of OpenJDK 7, javac in the above case now does
           * generate a class file, but an incomplete one that fails to load
           * with a ClassFormatError "Absent Code attribute in method that

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    if (Double.parseDouble(System.getProperty("java.class.version")) < Opcodes.V1_6) {
      v = new ForceClassVersion15(v);
    }


    new ClassReader(classBytes).accept(v, 0);
    return writer.toByteArray();
  }

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        if (isClassnameGenerated(lookupName)
            && !allGeneratedClasses.contains(lookupName)) {
          allGeneratedClasses.add(lookupName);
        }
        AnonymousClassVisitor cv = new AnonymousClassVisitor();
        new ClassReader(classBytes).accept(cv, 0);
        List<String> innerClasses = cv.getInnerClassNames();
        for (String innerClass : innerClasses) {
          // The innerClass has to be an inner class of the lookupName
          if (!innerClass.startsWith(mainClass + "$")) {
            continue;

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