UWP trouble with interpreting dynamic expressions

[neolithos]

Hello,

a really Q&D example for showing the issue.

First the simple callsitebinder:

private class BinaryCallSiteBinder : BinaryOperationBinder
{
    public BinaryCallSiteBinder()
        : base(ExpressionType.Add)
    {
    }

    public override DynamicMetaObject FallbackBinaryOperation(DynamicMetaObject target, DynamicMetaObject arg, DynamicMetaObject errorSuggestion)
    {

        return new DynamicMetaObject(
            Expression.Convert(
            Expression.Add(
                Expression.Convert(target.Expression, typeof(int)),
                Expression.Convert(arg.Expression, typeof(int))
            ), typeof(object)),

            BindingRestrictions.GetTypeRestriction(target.Expression, typeof(int)).Merge(
                BindingRestrictions.GetTypeRestriction(arg.Expression, typeof(int))
            ));
    }
}

And the calling code:

var expr = DynamicExpression.Dynamic(new BinaryCallSiteBinder(), typeof(object), Expression.Constant(40, typeof(object)), Expression.Constant(2, typeof(object)));
var f = Expression.Lambda<Func<object>>(expr);
var f2 = f.Compile();
textbox1.Text = f2().ToString();

If I run the code under Windows 8.1 Phone or the desktop .net framework, it works fine.

But under Windows 10 UWP I get the following exception:

System.ArgumentException wurde nicht von Benutzercode behandelt.
  HResult=-2147024809
  Message=Expression of type 'System.Object' cannot be used for parameter of type 'System.Runtime.CompilerServices.CallSite' of method 'Boolean SetNotMatched(System.Runtime.CompilerServices.CallSite)'
  Source=System.Linq.Expressions
  StackTrace:
       at System.Dynamic.Utils.ExpressionUtils.ValidateOneArgument(MethodBase method, ExpressionType nodeKind, Expression arg, ParameterInfo pi)
       at System.Linq.Expressions.Expression.Call(MethodInfo method, Expression arg0)
       at System.Runtime.CompilerServices.CallSite`1.CreateCustomNoMatchDelegate(MethodInfo invoke)
       at System.Runtime.CompilerServices.CallSite`1.MakeUpdateDelegate()
       at System.Runtime.CompilerServices.CallSite`1.GetUpdateDelegate(T& addr)
       at System.Runtime.CompilerServices.CallSite`1.GetUpdateDelegate()
       at System.Runtime.CompilerServices.CallSite`1.Create(CallSiteBinder binder)
       at System.Runtime.CompilerServices.CallSite.Create(Type delegateType, CallSiteBinder binder)
       at System.Linq.Expressions.DynamicExpression.Reduce()
       at System.Linq.Expressions.Interpreter.LightCompiler.CompileNoLabelPush(Expression expr)
       at System.Linq.Expressions.Interpreter.LightCompiler.Compile(Expression expr)
       at System.Linq.Expressions.Interpreter.LightCompiler.CompileTop(LambdaExpression node)
       at System.Linq.Expressions.Expression`1.Compile()
       at TestLua.MainPage.btnClick_Click(Object sender, RoutedEventArgs e)

What is wrong?

Same Issue IronLanguages/dlr#3

[jdhardy]

AFAIK IronPython had never been tested under UWP. Trying it there is
unexplored territory, although please continue to file any issues you may
find.
On Sep 28, 2015 6:40 AM, "neolithos" [email protected] wrote:

Hello,

a really Q&D example for showing the issue.

First the simple callsitebinder:

private class BinaryCallSiteBinder : BinaryOperationBinder
{
public BinaryCallSiteBinder()
: base(ExpressionType.Add)
{
}

public override DynamicMetaObject FallbackBinaryOperation(DynamicMetaObject target, DynamicMetaObject arg, DynamicMetaObject errorSuggestion)
{

    return new DynamicMetaObject(
        Expression.Convert(
        Expression.Add(
            Expression.Convert(target.Expression, typeof(int)),
            Expression.Convert(arg.Expression, typeof(int))
        ), typeof(object)),

        BindingRestrictions.GetTypeRestriction(target.Expression, typeof(int)).Merge(
            BindingRestrictions.GetTypeRestriction(arg.Expression, typeof(int))
        ));
}

}

And the calling code:

var expr = DynamicExpression.Dynamic(new BinaryCallSiteBinder(), typeof(object), Expression.Constant(40, typeof(object)), Expression.Constant(2, typeof(object)));var f = Expression.Lambda<Func>(expr);var f2 = f.Compile();
textbox1.Text = f2().ToString();

If I run the code under Windows 8.1 Phone or the desktop .net framework,
it works fine.

But under Windows 10 UWP I get the following exception:

System.ArgumentException wurde nicht von Benutzercode behandelt.
HResult=-2147024809
Message=Expression of type 'System.Object' cannot be used for parameter of type 'System.Runtime.CompilerServices.CallSite' of method 'Boolean SetNotMatched(System.Runtime.CompilerServices.CallSite)'
Source=System.Linq.Expressions
StackTrace:
at System.Dynamic.Utils.ExpressionUtils.ValidateOneArgument(MethodBase method, ExpressionType nodeKind, Expression arg, ParameterInfo pi)
at System.Linq.Expressions.Expression.Call(MethodInfo method, Expression arg0)
at System.Runtime.CompilerServices.CallSite1.CreateCustomNoMatchDelegate(MethodInfo invoke) at System.Runtime.CompilerServices.CallSite1.MakeUpdateDelegate()
at System.Runtime.CompilerServices.CallSite1.GetUpdateDelegate(T& addr) at System.Runtime.CompilerServices.CallSite1.GetUpdateDelegate()
at System.Runtime.CompilerServices.CallSite1.Create(CallSiteBinder binder) at System.Runtime.CompilerServices.CallSite.Create(Type delegateType, CallSiteBinder binder) at System.Linq.Expressions.DynamicExpression.Reduce() at System.Linq.Expressions.Interpreter.LightCompiler.CompileNoLabelPush(Expression expr) at System.Linq.Expressions.Interpreter.LightCompiler.Compile(Expression expr) at System.Linq.Expressions.Interpreter.LightCompiler.CompileTop(LambdaExpression node) at System.Linq.Expressions.Expression1.Compile()
at TestLua.MainPage.btnClick_Click(Object sender, RoutedEventArgs e)

What is wrong?

—
Reply to this email directly or view it on GitHub
#1231.

[neolithos]

This problem lies in the dynamic language runtime. I see that there is a project IconLanguages / dlr

Should I resubmit this issue there. Or is this here the right address?

[jdhardy]

The other one is probably better, since it's the next version of the DLR
(for IronPython 3). Unless it's a trivial fix (and it's probably not) it's
unlikely to get backported to the IronPython 2.7 branch due to backwards
compatibility.

On Mon, Sep 28, 2015 at 9:09 AM, neolithos [email protected] wrote:

This problem lies in the dynamic language runtime. I see that there is a
project IconLanguages / dlr

Should I resubmit this issue there. Or is this here the right address?

—
Reply to this email directly or view it on GitHub
#1231 (comment)
.