1 /// <summary>
2 /// 提供结构体转换器的工厂类。
3 /// Provides a factory class for structure converters.
4 /// </summary>
5 public class StructConvertFactory
6 {
7 /// <summary>
8 /// 根据结构体类型的复杂性选择合适的转换器。
9 /// Selects an appropriate converter based on the complexity of the structure type.
10 /// </summary>
11 /// <typeparam name="T">要为其创建转换器的结构体类型。</typeparam>
12 /// <returns>返回符合结构体类型特性的转换器实例。</returns>
13 /// <remarks>
14 /// 如果结构体包含复杂字段,则返回一个基于反射的转换器,否则返回一个基于内存操作的转换器。
15 /// If the structure contains complex fields, a reflection-based converter is returned; otherwise, a memory operation-based converter is provided.
16 /// </remarks>
17 public static IStructConvert CreateConvertor<T>() where T : struct
18 {
19 // 判断结构体类型T是否包含复杂字段
20 if (HasComplexFields(typeof(T)))
21 {
22 // 返回反射方式实现的结构体转换器
23 return new StructConvert();
24 }
25 else
26 {
27 // 返回Marshal自带的操作方式实现的结构体转换器
28 return new MarshalConvert();
29 }
30 }
31
32 /// <summary>
33 /// 验证指定类型的字段是否包含复杂类型。
34 /// Verifies whether the fields of the specified type contain complex types.
35 /// </summary>
36 /// <param name="type">要检查的类型。</param>
37 /// <returns>如果包含复杂类型字段,则返回true;否则返回false。</returns>
38 /// <remarks>
39 /// 复杂类型包括数组、类以及非基本的值类型(如结构体),但不包括decimal。
40 /// Complex types include arrays, classes, and non-primitive value types such as structures, but exclude decimal.
41 /// </remarks>
42 private static bool HasComplexFields(Type type)
43 {
44 foreach (var field in type.GetFields(BindingFlags.Public | BindingFlags.Instance))
45 {
46 if (field.FieldType.IsArray || field.FieldType.IsClass ||
47 (field.FieldType.IsValueType && !field.FieldType.IsPrimitive &&
48 field.FieldType != typeof(decimal)))
49 {
50 return true;
51 }
52 }
53 return false;
54 }
55 }
1 /// <summary>
2 /// IStructConvert 接口,提供结构体与字节数组之间的序列化和反序列化功能。
3 /// IStructConvert interface, providing serialization and deserialization functionality between structures and byte arrays.
4 /// </summary>
5 public interface IStructConvert
6 {
7 /// <summary>
8 /// 将字节数组反序列化为结构体。
9 /// Deserializes a byte array into a structure.
10 /// </summary>
11 /// <typeparam name="T">结构体的类型。</typeparam>
12 /// <param name="data">包含结构体数据的字节数组。</param>
13 /// <returns>反序列化后的结构体实例。</returns>
14 byte[] StructToBytes<T>(T structure) where T : struct;
15
16 /// <summary>
17 /// 将结构体实例转换为字节数组。
18 /// Converts a structure instance into a byte array.
19 /// </summary>
20 /// <typeparam name="T">要转换的结构体类型,必须是值类型。</typeparam>
21 /// <param name="structure">要转换的结构体实例。</param>
22 /// <returns>表示结构体数据的字节数组。</returns>
23 T BytesToStruct<T>(byte[] data) where T : struct;
24 }
1 /// <summary>
2 /// 实现IStructConvert接口,提供结构体与字节数组间的基本转换功能。
3 /// Implements the IStructConvert interface to provide conversion between structures and byte arrays.
4 /// </summary>
5 public class MarshalConvert : IStructConvert
6 {
7 /// <summary>
8 /// 将字节数组转换为指定类型的结构体实例。
9 /// Converts a byte array into an instance of the specified type of structure.
10 /// </summary>
11 /// <typeparam name="T">要转换的结构体类型,必须是值类型。</typeparam>
12 /// <param name="data">包含结构体数据的字节数组。</param>
13 /// <returns>转换后的结构体实例。</returns>
14 public T BytesToStruct<T>(byte[] data) where T : struct
15 {
16 T structure;
17 // 计算结构体类型T的内存大小
18 // Calculate the memory size of the structure type T
19 int size = Marshal.SizeOf(typeof(T));
20 // 分配相应大小的内存缓冲区
21 // Allocate a memory buffer of the appropriate size
22 IntPtr buffer = Marshal.AllocHGlobal(size);
23 try
24 {
25 // 将字节数组复制到分配的内存中
26 // Copy the byte array to the allocated memory
27 Marshal.Copy(data, 0, buffer, size);
28 // 将内存缓冲区转换为指定的结构体
29 // Convert the memory buffer to the specified structure
30 structure = Marshal.PtrToStructure<T>(buffer);
31 }
32 finally
33 {
34 // 释放内存缓冲区
35 // Free the memory buffer
36 Marshal.FreeHGlobal(buffer);
37 }
38 return structure;
39 }
40
41 /// <summary>
42 /// 将结构体实例转换为字节数组。
43 /// Converts a structure instance into a byte array.
44 /// </summary>
45 /// <typeparam name="T">要转换的结构体类型,必须是值类型。</typeparam>
46 /// <param name="structure">要转换的结构体实例。</param>
47 /// <returns>表示结构体数据的字节数组。</returns>
48 public byte[] StructToBytes<T>(T structure) where T : struct
49 {
50 // 计算结构体实例的内存大小
51 // Calculate the memory size of the structure instance
52 int size = Marshal.SizeOf(structure);
53 byte[] array = new byte[size];
54 // 分配相应大小的内存缓冲区
55 // Allocate a memory buffer of the appropriate size
56 IntPtr buffer = Marshal.AllocHGlobal(size);
57 try
58 {
59 // 将结构体实例复制到内存缓冲区
60 // Copy the structure instance to the memory buffer
61 Marshal.StructureToPtr(structure, buffer, false);
62 // 将内存缓冲区的数据复制到字节数组
63 // Copy the data from the memory buffer to the byte array
64 Marshal.Copy(buffer, array, 0, size);
65 }
66 finally
67 {
68 // 释放内存缓冲区
69 // Free the memory buffer
70 Marshal.FreeHGlobal(buffer);
71 }
72 return array;
73 }
74 }