// If the DynamicExpression uses a transient (in-memory) type for its
// delegate, we need to replace it with a new delegate type that can be
// saved to disk
protected override Expression VisitDynamic(DynamicExpression node)
{
if (RewriteDelegate(node.DelegateType, out Type delegateType))
{
node = DynamicExpression.MakeDynamic(delegateType, node.Binder, node.Arguments);
}
// Reduce dynamic expression so that the lambda can be emitted as a non-dynamic method.
return(Visit(CompilerHelpers.Reduce(node)));
}
protected override Expression VisitDynamic(DynamicExpression node)
{
CallSiteBinder binder = node.Binder;
if (!(binder is InterceptorSiteBinder))
{
binder = new InterceptorSiteBinder(binder);
return(DynamicExpression.MakeDynamic(node.DelegateType, binder, node.Arguments));
}
return(node);
}
protected override Expression VisitDynamic(DynamicExpression node)
{
int yields = _yields.Count;
ReadOnlyCollection <Expression> a = Visit(node.Arguments);
if (a == node.Arguments)
{
return(node);
}
if (yields == _yields.Count)
{
return(DynamicExpression.MakeDynamic(node.DelegateType, node.Binder, a));
}
return(Expression.Block(
ToTemp(ref a),
DynamicExpression.MakeDynamic(node.DelegateType, node.Binder, a)
));
}
public void TypedAritySpecialisedUsedWhenPossible(int size, string nameSuffix)
{
CallSiteBinder binder = Binder.GetMember(
CSharpBinderFlags.None, "Member", GetType(),
new[] { CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null) });
Type delType = Expression.GetFuncType(
Enumerable.Repeat(typeof(object), size).Append(typeof(string)).Prepend(typeof(CallSite)).ToArray());
DynamicExpression exp = DynamicExpression.MakeDynamic(
delType, binder, Enumerable.Range(0, size).Select(_ => Expression.Constant(null)));
Assert.Equal("TypedDynamicExpression" + nameSuffix, exp.GetType().Name);
exp = Expression.MakeDynamic(
delType, binder, Enumerable.Range(0, size).Select(_ => Expression.Constant(null)));
Assert.Equal("TypedDynamicExpression" + nameSuffix, exp.GetType().Name);
if (size != 0)
{
exp = Expression.Dynamic(
binder, typeof(string), Enumerable.Range(0, size).Select(_ => Expression.Constant(null)));
Assert.Equal("TypedDynamicExpression" + nameSuffix, exp.GetType().Name);
}
}
