72 lines
2.4 KiB
C#
72 lines
2.4 KiB
C#
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//
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// CSharpIsEventBinder.cs
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//
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// Authors:
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// Marek Safar <marek.safar@gmail.com>
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//
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// Copyright (C) 2009 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Dynamic;
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using System.Collections.Generic;
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using System.Linq;
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using Compiler = Mono.CSharp;
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namespace Microsoft.CSharp.RuntimeBinder
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{
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class CSharpIsEventBinder : DynamicMetaObjectBinder
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{
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Type callingContext;
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string name;
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public CSharpIsEventBinder (string name, Type callingContext)
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{
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this.name = name;
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this.callingContext = callingContext;
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}
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public override DynamicMetaObject Bind (DynamicMetaObject target, DynamicMetaObject[] args)
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{
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var ctx = DynamicContext.Create ();
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var context_type = ctx.ImportType (callingContext);
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var queried_type = ctx.ImportType (target.LimitType);
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var rc = new Compiler.ResolveContext (new RuntimeBinderContext (ctx, context_type), 0);
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var expr = Compiler.Expression.MemberLookup (rc, false, queried_type,
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name, 0, Compiler.Expression.MemberLookupRestrictions.ExactArity, Compiler.Location.Null);
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var binder = new CSharpBinder (
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this, new Compiler.BoolConstant (ctx.CompilerContext.BuiltinTypes, expr is Compiler.EventExpr, Compiler.Location.Null), null);
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binder.AddRestrictions (target);
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return binder.Bind (ctx, callingContext);
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}
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public override Type ReturnType {
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get {
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return typeof (bool);
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}
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}
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}
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}
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