public ArrayMethodILEmitter(ArrayMethod method)
{
_method = method;
ArrayType arrayType = (ArrayType)method.OwningType;
_rank = arrayType.Rank;
_elementType = arrayType.ElementType;
}
private ArrayMethodILEmitter(ArrayMethod method)
{
_method = method;
ArrayType arrayType = (ArrayType)method.OwningType;
_rank = arrayType.Rank;
_elementType = arrayType.ElementType;
_emitter = new ILEmitter();
// This helper field is needed to generate proper GC tracking. There is no direct way
// to create interior pointer.
_helperFieldToken = _emitter.NewToken(_method.Context.GetWellKnownType(WellKnownType.Object).GetKnownField("m_pEEType"));
}
public void GetCountTest()
{
ArrayMethod arrayMethod = new ArrayMethod();
Assert.AreEqual(10, arrayMethod.GetCount(new int[] { 4, 4, 5, 8, 5, 3, 6 }));
Assert.AreEqual(12, arrayMethod.GetCount(new int[] { 1, 5, 9, 10, 5 }));
Assert.AreEqual(6, arrayMethod.GetCount(new int[] { 2, 5, 2, 7 }));
Assert.AreEqual(1, arrayMethod.GetCount(new int[] { 1, 2, 3 }));
Assert.AreEqual(1, arrayMethod.GetCount(new int[] { 0, 1, 1, 1, 1, 1, 1, 1, 1, 2 }));
Assert.AreEqual(-1, arrayMethod.GetCount(new int[] { 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 }));
Assert.AreEqual(0, arrayMethod.GetCount(new int[] { 2 }));
Assert.AreEqual(4, arrayMethod.GetCount(new int[] { 2, 6 }));
Assert.AreNotEqual(0, arrayMethod.GetCount(new int[] { 1, 5 }));
}
private ArrayMethodILEmitter(ArrayMethod method)
{
Debug.Assert(method.Kind != ArrayMethodKind.Address, "Should be " + nameof(ArrayMethodKind.AddressWithHiddenArg));
_method = method;
ArrayType arrayType = (ArrayType)method.OwningType;
_rank = arrayType.Rank;
_elementType = arrayType.ElementType;
_emitter = new ILEmitter();
// This helper field is needed to generate proper GC tracking. There is no direct way
// to create interior pointer.
_helperFieldToken = _emitter.NewToken(_method.Context.GetWellKnownType(WellKnownType.Object).GetKnownField("m_pEEType"));
}
/// <summary>
/// The main.
/// </summary>
/// <param name="args">
/// The args.
/// </param>
private static void Main(string[] args)
{
// array 常用类库的练习
ArrayMethod.ArrayMethodTest();
/*
* 数组 Array
* 优势, 查询效率 高， 增，删，改 慢
*/
// 创建容量为10 的数组
var arr1 = new int[] { 1, 2, 4, 8, 3 };
arr1.ArrMsort();
// 赋值
Console.WriteLine(arr1.ArrToString());
Console.ReadLine();
// 查 时间 O(1)
var a1 = arr1[0];
// 末尾添加 (时间O(1)) 如果数组已经满了，出错：数组下标越界
arr1.Append(1);
// 首部||中部添加 会将下标之后的值统一向后面移动
var num = 0;
for (int i = 0; i < arr1.Length - 1; i++)
{
num = arr1[i];
arr1[i] = arr1[i + 1];
}
arr1[arr1.Length - 1] = num;
var a = arr1.ArrToString();
Console.WriteLine(a);
Console.ReadLine();
}
public static MethodIL EmitIL(ArrayMethod arrayMethod)
{
return(new ArrayMethodILEmitter(arrayMethod).EmitIL());
}
