source: tags/3.3.11/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory-5.5.0/Semantics/LocalResolveResult.cs @ 13398

// 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
// 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 System;
using System.Globalization;
using ICSharpCode.NRefactory.TypeSystem;

namespace ICSharpCode.NRefactory.Semantics
{
  /// <summary>
  /// Represents a local variable or parameter.
  /// </summary>
  public class LocalResolveResult : ResolveResult
  {
    readonly IVariable variable;
    
    public LocalResolveResult(IVariable variable)
      : base(UnpackTypeIfByRefParameter(variable))
    {
      this.variable = variable;
    }
    
    static IType UnpackTypeIfByRefParameter(IVariable variable)
    {
      if (variable == null)
        throw new ArgumentNullException("variable");
      IType type = variable.Type;
      if (type.Kind == TypeKind.ByReference) {
        IParameter p = variable as IParameter;
        if (p != null && (p.IsRef || p.IsOut))
          return ((ByReferenceType)type).ElementType;
      }
      return type;
    }
    
    public IVariable Variable {
      get { return variable; }
    }
    
    public bool IsParameter {
      get { return variable is IParameter; }
    }
    
    public override bool IsCompileTimeConstant {
      get { return variable.IsConst; }
    }
    
    public override object ConstantValue {
      get { return IsParameter ? null : variable.ConstantValue; }
    }
    
    public override string ToString()
    {
      return string.Format(CultureInfo.InvariantCulture, "[LocalResolveResult {0}]", variable);
    }
    
    public override DomRegion GetDefinitionRegion()
    {
      return variable.Region;
    }
  }
}