DynamicMethod.GetILGenerator 메서드

정의

네임스페이스:

System.Reflection.Emit

어셈블리:

System.Reflection.Emit.Lightweight.dll

동적 메서드의 본문을 내보내는 데 사용할 수 있는 MSIL 생성기를 반환합니다.

오버로드

GetILGenerator(Int32)	지정된 된 MSIL 스트림 크기를 사용하는 메서드에 대한 MSIL(Microsoft Intermediate Language) 생성기를 반환합니다.
GetILGenerator()	64바이트의 기본 MSIL(Microsoft Intermediate Language) 스트림 크기를 사용하는 메서드에 대한 MSIL 생성기를 반환합니다.

GetILGenerator(Int32)

Source:

DynamicMethod.CoreCLR.cs

지정된 된 MSIL 스트림 크기를 사용하는 메서드에 대한 MSIL(Microsoft Intermediate Language) 생성기를 반환합니다.

public:
 System::Reflection::Emit::ILGenerator ^ GetILGenerator(int streamSize);

public System.Reflection.Emit.ILGenerator GetILGenerator (int streamSize);

member this.GetILGenerator : int -> System.Reflection.Emit.ILGenerator

Public Function GetILGenerator (streamSize As Integer) As ILGenerator

매개 변수

streamSize

Int32

MSIL 스트림에 바이트의 크기입니다.

반환

ILGenerator

지정된 MSIL 스트림 크기를 가진 메서드의 ILGenerator 개체입니다.

예제

다음 코드 예제에서는이 메서드 오버 로드를 보여 줍니다. 이 코드 예제는에 대해 제공 된 큰 예제의 일부는 DynamicMethod 클래스입니다.

// Create an array that specifies the parameter types of the
// overload of Console::WriteLine to be used in Hello.
array<Type^>^ writeStringArgs = { String::typeid };
// Get the overload of Console::WriteLine that has one
// String parameter.
MethodInfo^ writeString = Console::typeid->GetMethod("WriteLine", 
    writeStringArgs);

// Get an ILGenerator and emit a body for the dynamic method,
// using a stream size larger than the IL that will be
// emitted.
ILGenerator^ il = hello->GetILGenerator(256);
// Load the first argument, which is a string, onto the stack.
il->Emit(OpCodes::Ldarg_0);
// Call the overload of Console::WriteLine that prints a string.
il->EmitCall(OpCodes::Call, writeString, nullptr);
// The Hello method returns the value of the second argument;
// to do this, load the onto the stack and return.
il->Emit(OpCodes::Ldarg_1);
il->Emit(OpCodes::Ret);

// Create an array that specifies the parameter types of the
// overload of Console.WriteLine to be used in Hello.
Type[] writeStringArgs = {typeof(string)};
// Get the overload of Console.WriteLine that has one
// String parameter.
MethodInfo writeString = typeof(Console).GetMethod("WriteLine",
    writeStringArgs);

// Get an ILGenerator and emit a body for the dynamic method,
// using a stream size larger than the IL that will be
// emitted.
ILGenerator il = hello.GetILGenerator(256);
// Load the first argument, which is a string, onto the stack.
il.Emit(OpCodes.Ldarg_0);
// Call the overload of Console.WriteLine that prints a string.
il.EmitCall(OpCodes.Call, writeString, null);
// The Hello method returns the value of the second argument;
// to do this, load the onto the stack and return.
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Ret);

' Create an array that specifies the parameter types of the
' overload of Console.WriteLine to be used in Hello.
Dim writeStringArgs() As Type = {GetType(String)}
' Get the overload of Console.WriteLine that has one
' String parameter.
Dim writeString As MethodInfo = GetType(Console). _
    GetMethod("WriteLine", writeStringArgs) 

' Get an ILGenerator and emit a body for the dynamic method,
' using a stream size larger than the IL that will be
' emitted.
Dim il As ILGenerator = hello.GetILGenerator(256)
' Load the first argument, which is a string, onto the stack.
il.Emit(OpCodes.Ldarg_0)
' Call the overload of Console.WriteLine that prints a string.
il.EmitCall(OpCodes.Call, writeString, Nothing)
' The Hello method returns the value of the second argument;
' to do this, load the onto the stack and return.
il.Emit(OpCodes.Ldarg_1)
il.Emit(OpCodes.Ret)

설명

동적 메서드가 완료된 후 또는 Invoke 메서드를 CreateDelegate 호출하여 MSIL을 추가하려는 추가 시도는 무시됩니다. 예외는 throw되지 않습니다.

참고

일부 완전 신뢰 시나리오에서도 동적 메서드에서 확인되지 않는 코드에 대한 제한이 있습니다. DynamicMethod에 대한 설명에서 "확인" 섹션을 참조하세요.

추가 정보

• 방법: 동적 메서드 정의 및 실행

GetILGenerator()

Source:

DynamicMethod.cs

64바이트의 기본 MSIL(Microsoft Intermediate Language) 스트림 크기를 사용하는 메서드에 대한 MSIL 생성기를 반환합니다.

public:
 System::Reflection::Emit::ILGenerator ^ GetILGenerator();

public System.Reflection.Emit.ILGenerator GetILGenerator ();

member this.GetILGenerator : unit -> System.Reflection.Emit.ILGenerator

Public Function GetILGenerator () As ILGenerator

반환

ILGenerator

메서드에 대한 ILGenerator 개체입니다.

예제

다음 코드 예제에서는 두 개의 매개 변수를 사용하는 동적 메서드를 만듭니다. 이 예제에서는 첫 번째 매개 변수를 콘솔에 인쇄하는 간단한 함수 본문을 내보내고 두 번째 매개 변수를 메서드의 반환 값으로 사용합니다. 이 예제에서는 대리자를 만들어 메서드를 완료하고, 다른 매개 변수를 사용하여 대리자를 호출하고, 마지막으로 메서드를 사용하여 동적 메서드를 Invoke 호출합니다.

using namespace System;
using namespace System::Reflection;
using namespace System::Reflection::Emit;

public ref class Test
{   
};

// Declare a delegate that will be used to execute the completed
// dynamic method.
delegate int HelloInvoker(String^ msg, int ret);

int main()
{
    // Create an array that specifies the types of the parameters
    // of the dynamic method. This method has a string parameter
    // and an int parameter.
    array<Type^>^ helloArgs = {String::typeid, int::typeid};

    // Create a dynamic method with the name "Hello", a return type
    // of int, and two parameters whose types are specified by the
    // array helloArgs. Create the method in the module that
    // defines the Test class.
    DynamicMethod^ hello = gcnew DynamicMethod("Hello", 
        int::typeid,
        helloArgs,
        Test::typeid->Module);

    // Create an array that specifies the parameter types of the
    // overload of Console.WriteLine to be used in Hello.
    array<Type^>^ writeStringArgs = {String::typeid};
    // Get the overload of Console.WriteLine that has one
    // String parameter.
    MethodInfo^ writeString =
        Console::typeid->GetMethod("WriteLine", writeStringArgs);

    // Get an ILGenerator and emit a body for the dynamic method.
    ILGenerator^ ilgen = hello->GetILGenerator();
    // Load the first argument, which is a string, onto the stack.
    ilgen->Emit(OpCodes::Ldarg_0);
    // Call the overload of Console.WriteLine that prints a string.
    ilgen->EmitCall(OpCodes::Call, writeString, nullptr);
    // The Hello method returns the value of the second argument;
    // to do this, load the onto the stack and return.
    ilgen->Emit(OpCodes::Ldarg_1);
    ilgen->Emit(OpCodes::Ret);

    // Create a delegate that represents the dynamic method. This
    // action completes the method, and any further attempts to
    // change the method will cause an exception.
    HelloInvoker^ helloDelegate =
        (HelloInvoker^) hello->CreateDelegate(HelloInvoker::typeid);

    // Use the delegate to execute the dynamic method. Save and
    // print the return value.
    int returnValue = helloDelegate("\r\nHello, World!", 42);
    Console::WriteLine("helloDelegate(\"Hello, World!\", 42) returned {0}",
        returnValue);

    // Do it again, with different arguments.
    returnValue = helloDelegate("\r\nHi, Mom!", 5280);
    Console::WriteLine("helloDelegate(\"Hi, Mom!\", 5280) returned {0}",
        returnValue);

    // Create an array of arguments to use with the Invoke method.
    array<Object^>^ delegateArgs = {"\r\nHello, World!", 42};
    // Invoke the dynamic method using the arguments. This is much
    // slower than using the delegate, because you must create an
    // array to contain the arguments, and ValueType arguments
    // must be boxed.
    Object^ returnValueObject = hello->Invoke(nullptr, delegateArgs);
    Console::WriteLine("hello.Invoke returned {0}", returnValueObject);
}

using System;
using System.Reflection;
using System.Reflection.Emit;
using Microsoft.VisualBasic;

public class Test
{
    // Declare a delegate that will be used to execute the completed
    // dynamic method.
    private delegate int HelloInvoker(string msg, int ret);

    public static void Main()
    {
        // Create an array that specifies the types of the parameters
        // of the dynamic method. This method has a string parameter
        // and an int parameter.
        Type[] helloArgs = {typeof(string), typeof(int)};

        // Create a dynamic method with the name "Hello", a return type
        // of int, and two parameters whose types are specified by the
        // array helloArgs. Create the method in the module that
        // defines the Test class.
        DynamicMethod hello = new DynamicMethod("Hello",
            typeof(int),
            helloArgs,
            typeof(Test).Module);

        // Create an array that specifies the parameter types of the
        // overload of Console.WriteLine to be used in Hello.
        Type[] writeStringArgs = {typeof(string)};
        // Get the overload of Console.WriteLine that has one
        // String parameter.
        MethodInfo writeString =
            typeof(Console).GetMethod("WriteLine", writeStringArgs);

        // Get an ILGenerator and emit a body for the dynamic method.
        ILGenerator il = hello.GetILGenerator();
        // Load the first argument, which is a string, onto the stack.
        il.Emit(OpCodes.Ldarg_0);
        // Call the overload of Console.WriteLine that prints a string.
        il.EmitCall(OpCodes.Call, writeString, null);
        // The Hello method returns the value of the second argument;
        // to do this, load the onto the stack and return.
        il.Emit(OpCodes.Ldarg_1);
        il.Emit(OpCodes.Ret);

        // Create a delegate that represents the dynamic method. This
        // action completes the method, and any further attempts to
        // change the method will cause an exception.
        HelloInvoker hi =
            (HelloInvoker) hello.CreateDelegate(typeof(HelloInvoker));

        // Use the delegate to execute the dynamic method. Save and
        // print the return value.
        int retval = hi("\r\nHello, World!", 42);
        Console.WriteLine("Executing delegate hi(\"Hello, World!\", 42) returned {0}",
            retval);

        // Do it again, with different arguments.
        retval = hi("\r\nHi, Mom!", 5280);
        Console.WriteLine("Executing delegate hi(\"Hi, Mom!\", 5280) returned {0}",
            retval);

        // Create an array of arguments to use with the Invoke method.
        object[] invokeArgs = {"\r\nHello, World!", 42};
        // Invoke the dynamic method using the arguments. This is much
        // slower than using the delegate, because you must create an
        // array to contain the arguments, and ValueType arguments
        // must be boxed.
        object objRet = hello.Invoke(null, invokeArgs);
        Console.WriteLine("hello.Invoke returned {0}", objRet);
    }
}

Imports System.Reflection
Imports System.Reflection.Emit

Public Class Test
    ' Declare a delegate that will be used to execute the completed
    ' dynamic method. 
    Private Delegate Function HelloInvoker(ByVal msg As String, _
        ByVal ret As Integer) As Integer

    Public Shared Sub Main()
        ' Create an array that specifies the types of the parameters
        ' of the dynamic method. This method has a String parameter
        ' and an Integer parameter.
        Dim helloArgs() As Type = {GetType(String), GetType(Integer)}

        ' Create a dynamic method with the name "Hello", a return type
        ' of Integer, and two parameters whose types are specified by
        ' the array helloArgs. Create the method in the module that
        ' defines the Test class.
        Dim hello As New DynamicMethod("Hello", _
            GetType(Integer), _
            helloArgs, _
            GetType(Test).Module)

        ' Create an array that specifies the parameter types of the
        ' overload of Console.WriteLine to be used in Hello.
        Dim writeStringArgs() As Type = {GetType(String)}
        ' Get the overload of Console.WriteLine that has one
        ' String parameter.
        Dim writeString As MethodInfo = GetType(Console). _
            GetMethod("WriteLine", writeStringArgs) 

        ' Get an ILGenerator and emit a body for the dynamic method.
        Dim il As ILGenerator = hello.GetILGenerator()
        ' Load the first argument, which is a string, onto the stack.
        il.Emit(OpCodes.Ldarg_0)
        ' Call the overload of Console.WriteLine that prints a string.
        il.EmitCall(OpCodes.Call, writeString, Nothing)
        ' The Hello method returns the value of the second argument;
        ' to do this, load the onto the stack and return.
        il.Emit(OpCodes.Ldarg_1)
        il.Emit(OpCodes.Ret)

        ' Create a delegate that represents the dynamic method. This
        ' action completes the method, and any further attempts to
        ' change the method will cause an exception.
    Dim hi As HelloInvoker = _
            hello.CreateDelegate(GetType(HelloInvoker))

        ' Use the delegate to execute the dynamic method. Save and
        ' print the return value.
        Dim retval As Integer = hi(vbCrLf & "Hello, World!", 42)
        Console.WriteLine("Executing delegate hi(""Hello, World!"", 42) returned " _
            & retval)

        ' Do it again, with different arguments.
        retval = hi(vbCrLf & "Hi, Mom!", 5280)
        Console.WriteLine("Executing delegate hi(""Hi, Mom!"", 5280) returned " _
            & retval)

        ' Create an array of arguments to use with the Invoke method.
        Dim invokeArgs() As Object = {vbCrLf & "Hello, World!", 42}
        ' Invoke the dynamic method using the arguments. This is much
        ' slower than using the delegate, because you must create an
        ' array to contain the arguments, and ValueType arguments
        ' must be boxed. Note that this overload of Invoke is 
        ' inherited from MethodBase, and simply calls the more 
        ' complete overload of Invoke.
        Dim objRet As Object = hello.Invoke(Nothing, invokeArgs)
        Console.WriteLine("hello.Invoke returned " & objRet)
    End Sub
End Class

' This code example produces the following output:
'
'Hello, World!
'Executing delegate hi("Hello, World!", 42) returned 42
'
'Hi, Mom!
'Executing delegate hi("Hi, Mom!", 5280) returned 5280
'
'Hello, World!
'hello.Invoke returned 42
'

설명

동적 메서드가 완료된 후 또는 Invoke 메서드를 CreateDelegate 호출하여 MSIL을 추가하려는 추가 시도는 무시됩니다. 예외는 throw되지 않습니다.

참고

일부 완전 신뢰 시나리오에서도 동적 메서드에서 확인되지 않는 코드에 대한 제한이 있습니다. DynamicMethod에 대한 설명에서 "확인" 섹션을 참조하세요.

추가 정보

• 방법: 동적 메서드 정의 및 실행