Java Modifier.INTERFACE屬性代碼示例

private void analyzeImplementation(final TypeLiteral<?> type, boolean ignoreConstructor)
{
	if( !scannedTypes.contains(type) )
	{
		try
		{
			if( (type.getRawType().getModifiers() & (Modifier.INTERFACE | Modifier.ABSTRACT)) == 0 )
			{
				analyzeInjectionPoints(InjectionPoint.forInstanceMethodsAndFields(type));
				if( !ignoreConstructor )
				{
					analyzeDependencies(InjectionPoint.forConstructorOf(type).getDependencies());
				}
			}
		}
		catch( ConfigurationException ce )
		{
			errors.merge(ce.getErrorMessages());
		}
		scannedTypes.add(type);
	}
}
 

@MethodSubstitution(isStatic = false)
public static Class<?> getSuperclass(final Class<?> thisObj) {
    KlassPointer klass = ClassGetHubNode.readClass(thisObj);
    if (!klass.isNull()) {
        KlassPointer klassNonNull = ClassGetHubNode.piCastNonNull(klass, SnippetAnchorNode.anchor());
        int accessFlags = klassNonNull.readInt(klassAccessFlagsOffset(INJECTED_VMCONFIG), KLASS_ACCESS_FLAGS_LOCATION);
        if ((accessFlags & Modifier.INTERFACE) == 0) {
            if (klassIsArray(klassNonNull)) {
                return Object.class;
            } else {
                KlassPointer superKlass = klassNonNull.readKlassPointer(klassSuperKlassOffset(INJECTED_VMCONFIG), KLASS_SUPER_KLASS_LOCATION);
                if (superKlass.isNull()) {
                    return null;
                } else {
                    KlassPointer superKlassNonNull = ClassGetHubNode.piCastNonNull(superKlass, SnippetAnchorNode.anchor());
                    return HubGetClassNode.readClass(superKlassNonNull);
                }
            }
        }
    } else {
        // Class for primitive type
    }
    return null;
}
 

public static void main(String [] argv) {
    int allMods = Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE |
        Modifier.ABSTRACT | Modifier.STATIC | Modifier.FINAL |
        Modifier.TRANSIENT | Modifier.VOLATILE | Modifier.SYNCHRONIZED |
        Modifier.NATIVE | Modifier.STRICT | Modifier.INTERFACE;

    String allModsString = "public protected private abstract static " +
        "final transient volatile synchronized native strictfp interface";

    /* zero should have an empty string */
    testString(0, "");

    /* test to make sure all modifiers print out in the proper order */
    testString(allMods, allModsString);

    /* verify no extraneous modifiers are printed */
    testString(~0, allModsString);
}
 

/**
 * Convert modifier bits from private coding used by
 * the compiler to that of java.lang.reflect.Modifier.
 */
static int translateModifiers(long flags) {
    int result = 0;
    if ((flags & Flags.ABSTRACT) != 0)
        result |= Modifier.ABSTRACT;
    if ((flags & Flags.FINAL) != 0)
        result |= Modifier.FINAL;
    if ((flags & Flags.INTERFACE) != 0)
        result |= Modifier.INTERFACE;
    if ((flags & Flags.NATIVE) != 0)
        result |= Modifier.NATIVE;
    if ((flags & Flags.PRIVATE) != 0)
        result |= Modifier.PRIVATE;
    if ((flags & Flags.PROTECTED) != 0)
        result |= Modifier.PROTECTED;
    if ((flags & Flags.PUBLIC) != 0)
        result |= Modifier.PUBLIC;
    if ((flags & Flags.STATIC) != 0)
        result |= Modifier.STATIC;
    if ((flags & Flags.SYNCHRONIZED) != 0)
        result |= Modifier.SYNCHRONIZED;
    if ((flags & Flags.TRANSIENT) != 0)
        result |= Modifier.TRANSIENT;
    if ((flags & Flags.VOLATILE) != 0)
        result |= Modifier.VOLATILE;
    return result;
}
 

@MethodSubstitution(isStatic = false)
public static boolean isInterface(final Class<?> thisObj) {
    KlassPointer klass = ClassGetHubNode.readClass(thisObj);
    if (klass.isNull()) {
        // Class for primitive type
        return false;
    } else {
        int accessFlags = klass.readInt(klassAccessFlagsOffset(INJECTED_VMCONFIG), KLASS_ACCESS_FLAGS_LOCATION);
        return (accessFlags & Modifier.INTERFACE) != 0;
    }
}
 

/**
 * 計算默認的 serialVersionUID
 *
 * @see java.io.ObjectStreamClass#lookup(Class)
 * @see java.io.ObjectStreamClass#computeDefaultSUID(Class)
 */
public static long computeDefaultSUID(String className, List<Field> fields) {
    try {
        ByteArrayOutputStream bout = new ByteArrayOutputStream();
        DataOutputStream dout = new DataOutputStream(bout);

        // simple class name
        dout.writeUTF(className);
        int classMods = Modifier.PUBLIC & (Modifier.PUBLIC | Modifier.FINAL | Modifier.INTERFACE | Modifier.ABSTRACT);
        dout.writeInt(classMods);

        // interface name
        dout.writeUTF("java.io.Serializable");

        // fields
        // fields.sort(Comparator.comparing(Field::getField));
        for (Field field : fields) {
            int mods = Modifier.PRIVATE &
                    (Modifier.PUBLIC | Modifier.PRIVATE | Modifier.PROTECTED |
                            Modifier.STATIC | Modifier.FINAL | Modifier.VOLATILE |
                            Modifier.TRANSIENT);
            if (((mods & Modifier.PRIVATE) == 0) ||
                    ((mods & (Modifier.STATIC | Modifier.TRANSIENT)) == 0)) {
                dout.writeUTF(field.getField());
                dout.writeInt(mods);
                dout.writeUTF(field.getFieldType());
            }
        }

        // method ignore
        dout.flush();

        MessageDigest md = MessageDigest.getInstance("SHA");
        byte[] hashBytes = md.digest(bout.toByteArray());
        long hash = 0;
        for (int i = Math.min(hashBytes.length, 8) - 1; i >= 0; i--) {
            hash = (hash << 8) | (hashBytes[i] & 0xFF);
        }
        return hash;
    } catch (Exception e) {
        // ignore
    }
    return 1;
}
 

protected String renderModifiers( StringBuilder sb, long modifiers, boolean isDefault, int defModifier )
{
  if( isDefault )
  {
    sb.append( "default " );
  }

  if( (modifiers & Modifier.PUBLIC) != 0 )
  {
    sb.append( "public " );
  }
  else if( (modifiers & Modifier.PROTECTED) != 0 )
  {
    sb.append( "protected " );
  }
  else if( (modifiers & Modifier.PRIVATE) != 0 )
  {
    sb.append( "private " );
  }
  else if( defModifier != 0 )
  {
    renderModifiers( sb, defModifier, false, 0 );
  }

  // Canonical order
  if( (modifiers & Modifier.ABSTRACT) != 0 )
  {
    sb.append( "abstract " );
  }
  if( (modifiers & Modifier.STATIC) != 0 )
  {
    sb.append( "static " );
  }
  if( (modifiers & Modifier.FINAL) != 0 )
  {
    sb.append( "final " );
  }
  if( (modifiers & Modifier.TRANSIENT) != 0 )
  {
    sb.append( "transient " );
  }
  if( (modifiers & Modifier.VOLATILE) != 0 )
  {
    sb.append( "volatile " );
  }
  if( (modifiers & Modifier.SYNCHRONIZED) != 0 )
  {
    sb.append( "synchronized " );
  }
  if( (modifiers & Modifier.INTERFACE) != 0 )
  {
    sb.append( "interface " );
  }

  return "";
}