1 // Copyright (c) 2009 The Chromium Authors. All rights reserved.

     2 // Use of this source code is governed by a BSD-style license that can be

     3 // found in the LICENSE file.

     4 

     5 package org.chromium.sdk.internal.protocolparser.dynamicimpl;

     6 

     7 import org.chromium.sdk.internal.protocolparser.JsonProtocolParseException;

     8 

     9 /**

    10  * An internal facility for navigating from object of base type to object of subtype. Used only

    11  * when user wants to parse JSON object as subtype.

    12  * It works in terms of {@link ObjectData}.

    13  */

    14 abstract class SubtypeCaster {

    15   private final Class<?> baseType;

    16   private final RefToType<?> subtypeRef;

    17 

    18   SubtypeCaster(Class<?> baseType, RefToType<?> subtypeRef) {

    19     this.baseType = baseType;

    20     this.subtypeRef = subtypeRef;

    21   }

    22 

    23   abstract ObjectData getSubtypeObjectData(ObjectData baseObjectData)

    24       throws JsonProtocolParseException;

    25 

    26   Class<?> getSubtype() {

    27     return subtypeRef.getTypeClass();

    28   }

    29 

    30   TypeHandler<?> getSubtypeHandler() {

    31     return subtypeRef.get();

    32   }

    33 

    34   Class<?> getBaseType() {

    35     return baseType;

    36   }

    37 }