source: branches/2994-AutoDiffForIntervals/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory-5.5.0/Semantics/ByReferenceResolveResult.cs

// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
// 
// 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
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// 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
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using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using ICSharpCode.NRefactory.TypeSystem;

namespace ICSharpCode.NRefactory.Semantics
{
  /// <summary>
  /// Represents the resolve result of an 'ref x' or 'out x' expression.
  /// </summary>
  public class ByReferenceResolveResult : ResolveResult
  {
    public bool IsOut { get; private set; }
    public bool IsRef { get { return !IsOut;} }
    
    public readonly ResolveResult ElementResult;
    
    public ByReferenceResolveResult(ResolveResult elementResult, bool isOut)
      : this(elementResult.Type, isOut)
    {
      this.ElementResult = elementResult;
    }
    
    public ByReferenceResolveResult(IType elementType, bool isOut)
      : base(new ByReferenceType(elementType))
    {
      this.IsOut = isOut;
    }
    
    public IType ElementType {
      get { return ((ByReferenceType)this.Type).ElementType; }
    }
    
    public override IEnumerable<ResolveResult> GetChildResults()
    {
      if (ElementResult != null)
        return new[] { ElementResult };
      else
        return Enumerable.Empty<ResolveResult>();
    }
    
    public override string ToString()
    {
      return string.Format(CultureInfo.InvariantCulture, "[{0} {1} {2}]", GetType().Name, IsOut ? "out" : "ref", ElementType);
    }
  }
}