public MemberInfo VisitConstructor(EmitConstructor constructor, TypeBuilder parent)
{
var constructorBuilder = parent.DefineConstructor(
ReflectionMethodAttributes.ToMethodAttributes(constructor.Visibility, false, false, false, false, constructor.IsStatic),
constructor.IsStatic ? CallingConventions.Standard : CallingConventions.HasThis,
constructor.Parameters.Select(x => (Type)x.ParameterType).ToArray());
return(constructorBuilder);
}
public EmitObjectCreationExpression(EmitConstructor constructor, params EmitExpression[] arguments)
{
if (constructor.IsStatic)
throw new ArgumentException("Cannot create an instance using a static constructor", nameof(constructor));
Type = constructor.DeclaringType;
Constructor = constructor;
Arguments.AddRange(arguments);
}
public void InstantiateStructWithConstructor()
{
var method = CreateMethod(block =>
{
EmitConstructor constructor = typeof(StructWithConstructor).GetConstructors()[0];
block.Return(constructor.New("foo"));
});
var result = (StructWithConstructor)method.Invoke(null, null);
Assert.AreEqual("foo", result.StringProperty);
}
public void InstantiateClass()
{
var method = CreateMethod(block =>
{
EmitConstructor constructorInfo = typeof(InstanceClass).GetConstructor(new Type[0]);
block.Return(constructorInfo.New());
});
var result = method.Invoke(null, null);
Assert.IsTrue(result is InstanceClass);
}
public EmitObjectCreationExpression(EmitConstructor constructor, params EmitExpression[] arguments)
{
if (constructor.IsStatic)
{
throw new ArgumentException("Cannot create an instance using a static constructor", nameof(constructor));
}
Type = constructor.DeclaringType;
Constructor = constructor;
Arguments.AddRange(arguments);
}
public void BenchmarkCtorEmit()
{
var ctor = new EmitConstructor(typeof(TestClass));
var watch = new Stopwatch();
watch.Reset();
watch.Start();
for (int i = 0; i < count; i++)
{
testReference = (TestClass)ctor.Create();
}
watch.Stop();
BenchmarkResult.Add("Ctors", "Emit", watch.Elapsed);
}
public EmitInstruction Emit(IEmitOpCodeConstructor opCode, EmitConstructor constructor)
{
var instruction = new EmitInstruction(opCode, constructor);
AddInstruction(instruction);
return instruction;
}
public static EmitObjectCreationExpression New(this EmitConstructor constructor, params EmitExpression[] arguments)
{
return(new EmitObjectCreationExpression(constructor, arguments));
}