// 
// ParameterPathElement.cs
// 
// Authors:
//	Alexander Chebaturkin (chebaturkin@gmail.com)
// 
// Copyright (C) 2011 Alexander Chebaturkin
// 
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//  
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using Mono.CodeContracts.Static.AST;
using Mono.CodeContracts.Static.DataStructures;
using Mono.CodeContracts.Static.Providers;

namespace Mono.CodeContracts.Static.Analysis.HeapAnalysis.Paths {
	class ParameterPathElement : PathElement<Parameter> {
		public ParameterPathElement (Parameter p, string description,
		                             SymFunction c, IMetaDataProvider metaDataProvider)
			: base (p, description, c)
		{
			TypeNode type = metaDataProvider.ParameterType (p);
			ResultType = metaDataProvider.ManagedPointer (type);

			if (metaDataProvider.IsManagedPointer (type))
				this.isManagedPointer = true;
		}

		public override bool IsParameter
		{
			get { return true; }
		}

		public override bool IsAddressOf
		{
			get { return false; }
		}

		public override Result Decode<Data, Result, Visitor, Label> (Label label, Visitor visitor, Data data)
		{
			Parameter p = this.Element;
			return visitor.LoadArg (label, p, false, Dummy.Value, data);
		}

		public override bool IsCallerVisible ()
		{
			return true;
		}
	}
}
