GenericTypeParameterBuilder.MakePointerType Método
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Devuelve un objeto Type que representa un puntero al parámetro de tipo genérico actual.
public:
override Type ^ MakePointerType();public override Type MakePointerType ();override this.MakePointerType : unit -> TypePublic Overrides Function MakePointerType () As TypeDevoluciones
Un objeto Type que representa un puntero al parámetro de tipo genérico actual.
Ejemplos
En el ejemplo de código siguiente se crea un módulo dinámico, un tipo genérico abstracto denominado Sample con un parámetro de tipo, Ty un método abstracto denominado TestMethod. TestMethodtoma un ref parámetro (ByRef en Visual Basic) de tipo T, un puntero al tipo Ty una matriz de T. Este método devuelve una matriz bidimensional de T. En el ejemplo de código se guarda el módulo dinámico en el disco, por lo que puede examinarlo mediante el desensamblador MSIL (Ildasm.exe).
using namespace System;
using namespace System::Reflection;
using namespace System::Reflection::Emit;
int main()
{
// Define a dynamic assembly to contain the sample type. The
// assembly will not be run, but only saved to disk, so
// AssemblyBuilderAccess.Save is specified.
//
AppDomain^ appDomain = AppDomain::CurrentDomain;
AssemblyName^ assemblyName = gcnew
AssemblyName("MakeXxxGenericTypeParameterExample");
AssemblyBuilder^ assemblyBuilder = appDomain->DefineDynamicAssembly
(assemblyName, AssemblyBuilderAccess::Save);
// An assembly is made up of executable modules. For a single
// module assembly, the module name and file name are the
// same as the assembly name.
ModuleBuilder^ moduleBuilder = assemblyBuilder->DefineDynamicModule
(assemblyName->Name, assemblyName->Name + ".dll");
// Define the sample type.
TypeBuilder^ typeBuilder = moduleBuilder->DefineType("Sample",
TypeAttributes::Public | TypeAttributes::Abstract);
// Make the sample type a generic type, by defining a type
// parameter T. All type parameters are defined at the same
// time, by passing an array containing the type parameter
// names.
array<String^>^ typeParamNames = {"T"};
array<GenericTypeParameterBuilder^>^ typeParams =
typeBuilder->DefineGenericParameters(typeParamNames);
// Define a method that takes a ByRef argument of type T, a
// pointer to type T, and one-dimensional array of type T.
// The method returns a two-dimensional array of type T.
//
// To create this method, you need Type objects that repre-
// sent the parameter types and the return type. Use the
// MakeByRefType, MakePointerType, and MakeArrayType methods
// to create the Type objects, using the generic type para-
// meter T.
//
Type^ byRefType = typeParams[0]->MakeByRefType();
Type^ pointerType = typeParams[0]->MakePointerType();
Type^ arrayType = typeParams[0]->MakeArrayType();
Type^ twoDimArrayType = typeParams[0]->MakeArrayType(2);
// Create the array of parameter types.
array<Type^>^ parameterTypes = {byRefType, pointerType, arrayType};
// Define the abstract Test method. After you have compiled
// and run this example code, you can use ildasm.exe to open
// MakeXxxGenericTypeParameterExample.dll, examine the Sample
// type, and verify the parameter types and return type of
// the TestMethod method.
//
MethodBuilder^ methodBuilder = typeBuilder->DefineMethod("TestMethod",
MethodAttributes::Abstract | MethodAttributes::Virtual
| MethodAttributes::Public, twoDimArrayType, parameterTypes);
// Create the type and save the assembly. For a single-file
// assembly, there is only one module to store the manifest
// information in.
//
typeBuilder->CreateType();
assemblyBuilder->Save(assemblyName->Name + ".dll");
};
using System;
using System.Reflection;
using System.Reflection.Emit;
using Microsoft.VisualBasic;
public class Example
{
public static void Main()
{
// Define a dynamic assembly to contain the sample type. The
// assembly will not be run, but only saved to disk, so
// AssemblyBuilderAccess.Save is specified.
//
AppDomain myDomain = AppDomain.CurrentDomain;
AssemblyName myAsmName = new
AssemblyName("MakeXxxGenericTypeParameterExample");
AssemblyBuilder myAssembly = myDomain.DefineDynamicAssembly(
myAsmName, AssemblyBuilderAccess.Save);
// An assembly is made up of executable modules. For a single-
// module assembly, the module name and file name are the same
// as the assembly name.
//
ModuleBuilder myModule = myAssembly.DefineDynamicModule(
myAsmName.Name, myAsmName.Name + ".dll");
// Define the sample type.
TypeBuilder myType = myModule.DefineType("Sample",
TypeAttributes.Public | TypeAttributes.Abstract);
// Make the sample type a generic type, by defining a type
// parameter T. All type parameters are defined at the same
// time, by passing an array containing the type parameter
// names.
string[] typeParamNames = {"T"};
GenericTypeParameterBuilder[] typeParams =
myType.DefineGenericParameters(typeParamNames);
// Define a method that takes a ByRef argument of type T, a
// pointer to type T, and one-dimensional array of type T. The
// method returns a two-dimensional array of type T.
//
// To create this method, you need Type objects that represent the
// parameter types and the return type. Use the MakeByRefType,
// MakePointerType, and MakeArrayType methods to create the Type
// objects, using the generic type parameter T.
//
Type byRefType = typeParams[0].MakeByRefType();
Type pointerType = typeParams[0].MakePointerType();
Type arrayType = typeParams[0].MakeArrayType();
Type twoDimArrayType = typeParams[0].MakeArrayType(2);
// Create the array of parameter types.
Type[] parameterTypes = {byRefType, pointerType, arrayType};
// Define the abstract Test method. After you have compiled
// and run this example code, you can use ildasm.exe to open
// MakeXxxGenericTypeParameterExample.dll, examine the Sample
// type, and verify the parameter types and return type of
// the TestMethod method.
//
MethodBuilder myMethodBuilder = myType.DefineMethod(
"TestMethod",
MethodAttributes.Abstract | MethodAttributes.Virtual
| MethodAttributes.Public,
twoDimArrayType,
parameterTypes);
// Create the type and save the assembly. For a single-file
// assembly, there is only one module to store the manifest
// information in.
//
myType.CreateType();
myAssembly.Save(myAsmName.Name + ".dll");
}
}
Imports System.Reflection
Imports System.Reflection.Emit
Public Class Example
Public Shared Sub Main()
' Define a dynamic assembly to contain the sample type. The
' assembly will not be run, but only saved to disk, so
' AssemblyBuilderAccess.Save is specified.
'
Dim myDomain As AppDomain = AppDomain.CurrentDomain
Dim myAsmName As New AssemblyName("MakeXxxGenericTypeParameterExample")
Dim myAssembly As AssemblyBuilder = myDomain.DefineDynamicAssembly( _
myAsmName, _
AssemblyBuilderAccess.Save)
' An assembly is made up of executable modules. For a single-
' module assembly, the module name and file name are the same
' as the assembly name.
'
Dim myModule As ModuleBuilder = myAssembly.DefineDynamicModule( _
myAsmName.Name, _
myAsmName.Name & ".dll")
' Define the sample type.
Dim myType As TypeBuilder = myModule.DefineType( _
"Sample", _
TypeAttributes.Public Or TypeAttributes.Abstract)
' Make the sample type a generic type, by defining a type
' parameter T. All type parameters are defined at the same
' time, by passing an array containing the type parameter
' names.
Dim typeParamNames() As String = {"T"}
Dim typeParams() As GenericTypeParameterBuilder = _
myType.DefineGenericParameters(typeParamNames)
' Define a method that takes a ByRef argument of type T, a
' pointer to type T, and one-dimensional array of type T. The
' method returns a two-dimensional array of type T.
'
' To create this method, you need Type objects that represent the
' parameter types and the return type. Use the MakeByRefType,
' MakePointerType, and MakeArrayType methods to create the Type
' objects, using the generic type parameter T.
'
Dim byRefType As Type = typeParams(0).MakeByRefType
Dim pointerType As Type = typeParams(0).MakePointerType
Dim arrayType As Type = typeParams(0).MakeArrayType
Dim twoDimArrayType As Type = typeParams(0).MakeArrayType(2)
' Create the array of parameter types.
Dim parameterTypes() As Type = _
{byRefType, pointerType, arrayType}
' Define the abstract Test method. After you have compiled
' and run this example code, you can use ildasm.exe to open
' MakeXxxGenericTypeParameterExample.dll, examine the Sample
' type, and verify the parameter types and return type of
' the TestMethod method.
'
Dim myMethodBuilder As MethodBuilder = myType.DefineMethod( _
"TestMethod", _
MethodAttributes.Abstract Or MethodAttributes.Virtual _
Or MethodAttributes.Public, _
twoDimArrayType, _
parameterTypes)
' Create the type and save the assembly. For a single-file
' assembly, there is only one module to store the manifest
' information in.
'
myType.CreateType()
myAssembly.Save(myAsmName.Name & ".dll")
End Sub
End Class
Comentarios
El MakePointerType método proporciona una manera de generar tipos de puntero para listas de parámetros.