// Test<int,int>，支持递归深入下一层
/// <summary>
/// 获取类型的泛型定义。
/// <para>获取示例 Test{int,int,List{int}}></para>
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
public static string GetGenriceName(this Type type)
{
if (!type.IsGenericType)
{
return(type.Name);
}
// 要识别出为定义泛型和已定义泛型
// List<>、List<int>
StringBuilder code = new StringBuilder($"{WipeOutName(type.Name)}<");
List <string> vs = new List <string>();
// 未定义泛型
if (type.IsGenericTypeDefinition)
{
var gType = type.GetGenericTypeDefinition();
code.Append(string.Join(", ", gType.GetGenericArguments().Select(x => GetInOut(x) + x.Name)));
}
else
{
foreach (var item in type.GetGenericArguments())
{
if (item.IsGenericType)
{
vs.Add(GetInOut(item) + GetGenriceName(item));
}
else
{
vs.Add(GetInOut(item) + ConstantTable.GetBaseTypeName(item));
}
}
code.Append(string.Join(", ", vs));
}
return(code.Append('>').ToString());
// 解析协变逆变
string GetInOut(Type type1)
{
if (!type1.IsGenericParameter)
{
return(string.Empty);
}
switch (type1.GenericParameterAttributes)
{
case GenericParameterAttributes.Contravariant: return("in");
case GenericParameterAttributes.Covariant: return("out");
default: return(string.Empty);
}
}
}
/// <summary>
/// 获取泛型类型中的参数列表，如果泛型参数未定义，则列表数为 0
/// <para>注意，只支持一层泛型</para>
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
public static string[] GetGenriceParams(this Type type)
{
if (!type.IsGenericType)
{
return(new string[0]);
}
#if NETSTANDARD2_0
return(type.GetGenericArguments().Select(x =>
x.IsGenericParameter ? x.Name : ConstantTable.GetBaseTypeName(x))
.ToArray());
#else
return(type.GetGenericArguments().Select(x =>
x.IsGenericTypeParameter ? x.Name : ConstantTable.GetBaseTypeName(x))
.ToArray());
#endif
}
public void Test()
{
var output = ConstantTable.GetBaseTypeName <Int32>();
Assert.Equal("int", output);
output = ConstantTable.GetBaseTypeName(666);
Assert.Equal("int", output);
output = ConstantTable.GetBaseTypeName(new object());
Assert.Equal("object", output);
output = ConstantTable.GetBaseTypeName(typeof(object));
Assert.Equal("object", output);
output = ConstantTable.GetBaseTypeName(typeof(int));
Assert.Equal("int", output);
}