public static void BuildCreateTargetInstanceMethod(Type type, TypeBuilder typeBuilder)
{
if (ReflectionUtils.IsNullable(type))
{
type = Nullable.GetUnderlyingType(type);
}
MethodBuilder methodBuilder = typeBuilder.DefineMethod(
"CreateTargetInstance",
MethodAttributes.Public | MethodAttributes.Virtual,
typeof(object),
null
);
ILGenerator ilGen = methodBuilder.GetILGenerator();
CompilationContext context = new CompilationContext(ilGen);
IAstRefOrValue returnValue;
if (type.IsValueType)
{
LocalBuilder lb = ilGen.DeclareLocal(type);
new AstInitializeLocalVariable(lb).Compile(context);
returnValue =
new AstBox()
{
Value = AstBuildHelper.ReadLocalRV(lb)
};
}
else
{
returnValue =
ReflectionUtils.HasDefaultConstructor(type)
?
new AstNewObject()
{
ObjectType = type
}
:
(IAstRefOrValue) new AstConstantNull();
}
new AstReturn()
{
ReturnType = type,
ReturnValue = returnValue
}.Compile(context);
}
/// <summary>
/// Builds the create target instance method.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="typeBuilder">The type builder.</param>
public static void BuildCreateTargetInstanceMethod(Type type, TypeBuilder typeBuilder)
{
// var expr = (Expression<Func<object>>)ObjectFactory.GenerateConstructorExpression(type).ToObject();
if (ReflectionHelper.IsNullable(type))
{
type = type.GetUnderlyingTypeCache();
}
var methodBuilder = typeBuilder.DefineMethod(
nameof(MapperBase.CreateTargetInstance),
MethodAttributes.Public | MethodAttributes.Virtual,
Metadata <object> .Type,
null);
var ilGen = methodBuilder.GetILGenerator();
var context = new CompilationContext(ilGen);
IAstRefOrValue returnValue;
if (type.IsValueType)
{
var lb = ilGen.DeclareLocal(type);
new AstInitializeLocalVariable(lb).Compile(context);
returnValue = new AstBox {
Value = AstBuildHelper.ReadLocalRV(lb)
};
}
else
{
returnValue = ReflectionHelper.HasDefaultConstructor(type)
? new AstNewObject {
ObjectType = type
}
: new AstConstantNull();
}
new AstReturn {
ReturnType = type, ReturnValue = returnValue
}.Compile(context);
}
