File size: 2,428 Bytes
8c763fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | // Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Dynamic;
using System.Linq.Expressions;
namespace System.Management.Automation.ComInterop
{
// Note: we only need to support the operations used by ComBinder
internal class ComMetaObject : DynamicMetaObject
{
internal ComMetaObject(Expression expression, BindingRestrictions restrictions, object arg)
: base(expression, restrictions, arg)
{
}
public override DynamicMetaObject BindInvokeMember(InvokeMemberBinder binder, DynamicMetaObject[] args)
{
Requires.NotNull(binder);
return binder.Defer(args.AddFirst(WrapSelf()));
}
public override DynamicMetaObject BindInvoke(InvokeBinder binder, DynamicMetaObject[] args)
{
Requires.NotNull(binder);
return binder.Defer(args.AddFirst(WrapSelf()));
}
public override DynamicMetaObject BindGetMember(GetMemberBinder binder)
{
Requires.NotNull(binder);
return binder.Defer(WrapSelf());
}
public override DynamicMetaObject BindSetMember(SetMemberBinder binder, DynamicMetaObject value)
{
Requires.NotNull(binder);
return binder.Defer(WrapSelf(), value);
}
public override DynamicMetaObject BindGetIndex(GetIndexBinder binder, DynamicMetaObject[] indexes)
{
Requires.NotNull(binder);
return binder.Defer(WrapSelf(), indexes);
}
public override DynamicMetaObject BindSetIndex(SetIndexBinder binder, DynamicMetaObject[] indexes, DynamicMetaObject value)
{
Requires.NotNull(binder);
return binder.Defer(WrapSelf(), indexes.AddLast(value));
}
private DynamicMetaObject WrapSelf()
{
return new DynamicMetaObject(
ComObject.RcwToComObject(Expression),
BindingRestrictions.GetExpressionRestriction(
Expression.Call(
typeof(ComBinder).GetMethod(nameof(ComBinder.IsComObject), System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public),
Helpers.Convert(Expression, typeof(object))
)
)
);
}
}
}
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