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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation.
*
* This source code is subject to terms and conditions of the Microsoft Public License. A
* copy of the license can be found in the License.html file at the root of this distribution. If
* you cannot locate the Microsoft Public License, please send an email to
* dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound
* by the terms of the Microsoft Public License.
*
* You must not remove this notice, or any other, from this software.
*
*
* ***************************************************************************/
using System; using Microsoft;
#if !SILVERLIGHT
#if CODEPLEX_40
using System.Linq.Expressions;
using System.Dynamic;
using System.Dynamic.Utils;
#else
using Microsoft.Linq.Expressions;
using Microsoft.Scripting;
using Microsoft.Scripting.Utils;
#endif
using System.Collections.Generic;
#if CODEPLEX_40
namespace System.Dynamic {
#else
namespace Microsoft.Scripting {
#endif
// 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) {
ContractUtils.RequiresNotNull(binder, "binder");
return binder.Defer(args.AddFirst(WrapSelf()));
}
public override DynamicMetaObject BindInvoke(InvokeBinder binder, DynamicMetaObject[] args) {
ContractUtils.RequiresNotNull(binder, "binder");
return binder.Defer(args.AddFirst(WrapSelf()));
}
public override DynamicMetaObject BindGetMember(GetMemberBinder binder) {
ContractUtils.RequiresNotNull(binder, "binder");
return binder.Defer(WrapSelf());
}
public override DynamicMetaObject BindSetMember(SetMemberBinder binder, DynamicMetaObject value) {
ContractUtils.RequiresNotNull(binder, "binder");
return binder.Defer(WrapSelf(), value);
}
public override DynamicMetaObject BindGetIndex(GetIndexBinder binder, DynamicMetaObject[] indexes) {
ContractUtils.RequiresNotNull(binder, "binder");
return binder.Defer(WrapSelf(), indexes);
}
public override DynamicMetaObject BindSetIndex(SetIndexBinder binder, DynamicMetaObject[] indexes, DynamicMetaObject value) {
ContractUtils.RequiresNotNull(binder, "binder");
return binder.Defer(WrapSelf(), indexes.AddLast(value));
}
private DynamicMetaObject WrapSelf() {
return new DynamicMetaObject(
ComObject.RcwToComObject(Expression),
BindingRestrictions.GetExpressionRestriction(
Expression.Call(
typeof(ComObject).GetMethod("IsComObject", System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic),
Helpers.Convert(Expression, typeof(object))
)
)
);
}
}
}
#endif
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