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

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

// found in the LICENSE file.

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

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

/**

 * This classs is responsible for parsing field values and saving them in {@link ObjectData}

 * for future use.

 */

class FieldLoader {

  private final String fieldName;

  private final int fieldPosInArray;

  private final SlowParser<?> slowParser;

  private final boolean isOptional;

  FieldLoader(int fieldPosInArray, String fieldName, SlowParser<?> slowParser, boolean isOptional) {

    this.fieldName = fieldName;

    this.fieldPosInArray = fieldPosInArray;

    this.slowParser = slowParser;

    this.isOptional = isOptional;

  }

  public String getFieldName() {

    return fieldName;

  }

  public void parse(boolean hasValue, Object value, ObjectData objectData)

      throws JsonProtocolParseException {

    if (hasValue) {

      try {

        objectData.getFieldArray()[fieldPosInArray] = slowParser.parseValue(value, objectData);

      } catch (JsonProtocolParseException e) {

        throw new JsonProtocolParseException("Failed to parse field " + getFieldName(), e);

      }

    } else {

      if (!isOptional) {

        throw new JsonProtocolParseException("Field is not optional: " + getFieldName());

      }

    }

  }

}