source: trunk/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory.CSharp-5.5.0/Ast/Expressions/ConditionalExpression.cs @ 17197

// 
// ConditionalExpression.cs
//
// Author:
//       Mike Krüger <mkrueger@novell.com>
// 
// Copyright (c) 2009 Novell, Inc (http://www.novell.com)
// 
// 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.Collections.Generic;

namespace ICSharpCode.NRefactory.CSharp
{
  /// <summary>
  /// Condition ? TrueExpression : FalseExpression
  /// </summary>
  public class ConditionalExpression : Expression
  {
    public readonly static Role<Expression> ConditionRole = Roles.Condition;
    public readonly static TokenRole QuestionMarkRole = new TokenRole("?");
    public readonly static Role<Expression> TrueRole = new Role<Expression>("True", Expression.Null);
    public readonly static TokenRole ColonRole = Roles.Colon;
    public readonly static Role<Expression> FalseRole = new Role<Expression>("False", Expression.Null);
    
    public Expression Condition {
      get { return GetChildByRole(ConditionRole); }
      set { SetChildByRole(ConditionRole, value); }
    }
    
    public CSharpTokenNode QuestionMarkToken {
      get { return GetChildByRole (QuestionMarkRole); }
    }
    
    public Expression TrueExpression {
      get { return GetChildByRole(TrueRole); }
      set { SetChildByRole(TrueRole, value); }
    }
    
    public CSharpTokenNode ColonToken {
      get { return GetChildByRole (ColonRole); }
    }
    
    public Expression FalseExpression {
      get { return GetChildByRole(FalseRole); }
      set { SetChildByRole(FalseRole, value); }
    }
    
    public ConditionalExpression ()
    {
    }
    
    public ConditionalExpression (Expression condition, Expression trueExpression, Expression falseExpression)
    {
      AddChild (condition, ConditionRole);
      AddChild (trueExpression, TrueRole);
      AddChild (falseExpression, FalseRole);
    }
    
    public override void AcceptVisitor (IAstVisitor visitor)
    {
      visitor.VisitConditionalExpression (this);
    }
      
    public override T AcceptVisitor<T> (IAstVisitor<T> visitor)
    {
      return visitor.VisitConditionalExpression (this);
    }
    
    public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data)
    {
      return visitor.VisitConditionalExpression (this, data);
    }
    
    protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
    {
      ConditionalExpression o = other as ConditionalExpression;
      return o != null && this.Condition.DoMatch(o.Condition, match) && this.TrueExpression.DoMatch(o.TrueExpression, match) && this.FalseExpression.DoMatch(o.FalseExpression, match);
    }

    #region Builder methods
    public override MemberReferenceExpression Member(string memberName)
    {
      return new MemberReferenceExpression { Target = this, MemberName = memberName };
    }

    public override IndexerExpression Indexer(IEnumerable<Expression> arguments)
    {
      IndexerExpression expr = new IndexerExpression();
      expr.Target = new ParenthesizedExpression(this);
      expr.Arguments.AddRange(arguments);
      return expr;
    }

    public override IndexerExpression Indexer(params Expression[] arguments)
    {
      IndexerExpression expr = new IndexerExpression();
      expr.Target = new ParenthesizedExpression(this);
      expr.Arguments.AddRange(arguments);
      return expr;
    }

    public override InvocationExpression Invoke(string methodName, IEnumerable<AstType> typeArguments, IEnumerable<Expression> arguments)
    {
      InvocationExpression ie = new InvocationExpression();
      MemberReferenceExpression mre = new MemberReferenceExpression();
      mre.Target = new ParenthesizedExpression(this);
      mre.MemberName = methodName;
      mre.TypeArguments.AddRange(typeArguments);
      ie.Target = mre;
      ie.Arguments.AddRange(arguments);
      return ie;
    }

    public override InvocationExpression Invoke(IEnumerable<Expression> arguments)
    {
      InvocationExpression ie = new InvocationExpression();
      ie.Target = new ParenthesizedExpression(this);
      ie.Arguments.AddRange(arguments);
      return ie;
    }

    public override InvocationExpression Invoke(params Expression[] arguments)
    {
      InvocationExpression ie = new InvocationExpression();
      ie.Target = new ParenthesizedExpression(this);
      ie.Arguments.AddRange(arguments);
      return ie;
    }

    public override CastExpression CastTo(AstType type)
    {
      return new CastExpression { Type = type,  Expression = new ParenthesizedExpression(this) };
    }

    public override AsExpression CastAs(AstType type)
    {
      return new AsExpression { Type = type,  Expression = new ParenthesizedExpression(this) };
    }

    public override IsExpression IsType(AstType type)
    {
      return new IsExpression { Type = type,  Expression = new ParenthesizedExpression(this) };
    }
    #endregion
  }
}