swift/Sources/FlexBuffers/Reader/Vector.swift

/*
 * Copyright 2024 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// MARK: - Vector

public struct Vector: FlexBufferVector {
  public let byteBuffer: ByteBuffer
  public let offset: Int
  public let count: Int
  public var isEmpty: Bool { count == 0 }

  let byteWidth: UInt8

  @inline(__always)
  init(byteBuffer: ByteBuffer, offset: Int, byteWidth: UInt8) {
    self.byteBuffer = byteBuffer
    self.offset = offset
    self.byteWidth = byteWidth
    count = getCount(
      buffer: byteBuffer,
      offset: offset,
      byteWidth: byteWidth)
  }

  @inline(__always)
  public subscript(index: Int) -> Reference? {
    return getReference(at: index)
  }
}