source: trunk/sources/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory.CSharp-5.5.0/Ast/GeneralScope/TypeParameterDeclaration.cs @ 11807

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using System;
using ICSharpCode.NRefactory.TypeSystem;

namespace ICSharpCode.NRefactory.CSharp
{
  /// <summary>
  /// [in|out] Name
  /// 
  /// Represents a type parameter.
  /// Note: mirroring the C# syntax, constraints are not part of the type parameter declaration, but belong
  /// to the parent type or method.
  /// </summary>
  public class TypeParameterDeclaration : AstNode
  {
    public static readonly Role<AttributeSection> AttributeRole = EntityDeclaration.AttributeRole;
    public static readonly TokenRole OutVarianceKeywordRole = new TokenRole ("out");
    public static readonly TokenRole InVarianceKeywordRole = new TokenRole ("in");
    
    public override NodeType NodeType {
      get { return NodeType.Unknown; }
    }
    
    public AstNodeCollection<AttributeSection> Attributes {
      get { return GetChildrenByRole (AttributeRole); }
    }
    
    VarianceModifier variance;
    
    public VarianceModifier Variance {
      get { return variance; }
      set { ThrowIfFrozen(); variance = value; }
    }
    
    public CSharpTokenNode VarianceToken {
      get {
        switch (Variance) {
          case VarianceModifier.Covariant:
            return GetChildByRole(OutVarianceKeywordRole);
          case VarianceModifier.Contravariant:
            return GetChildByRole(InVarianceKeywordRole);
          default:
            return CSharpTokenNode.Null;
        }
      }
    }
    
    public string Name {
      get {
        return GetChildByRole (Roles.Identifier).Name;
      }
      set {
        SetChildByRole(Roles.Identifier, Identifier.Create (value));
      }
    }
    
    public Identifier NameToken {
      get {
        return GetChildByRole (Roles.Identifier);
      }
      set {
        SetChildByRole (Roles.Identifier, value);
      }
    }

    public TypeParameterDeclaration ()
    {
    }

    public TypeParameterDeclaration (string name)
    {
      Name = name;
    }

    public override void AcceptVisitor (IAstVisitor visitor)
    {
      visitor.VisitTypeParameterDeclaration (this);
    }
    
    public override T AcceptVisitor<T> (IAstVisitor<T> visitor)
    {
      return visitor.VisitTypeParameterDeclaration (this);
    }
    
    public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data)
    {
      return visitor.VisitTypeParameterDeclaration(this, data);
    }
    
    protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
    {
      TypeParameterDeclaration o = other as TypeParameterDeclaration;
      return o != null && this.Variance == o.Variance && MatchString(this.Name, o.Name) && this.Attributes.DoMatch(o.Attributes, match);
    }
  }
}